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Brick for Cement/Lime Kiln

  • Mullite-SiC Brick for Cement/Lime Kiln

    Mullite-SiC Brick for Cement/Lime Kiln

    Mullite-SiC Brick for Cement/Lime Kiln (MUSIC-168, 165, 155)
    Mullite-SiC brick are mainly made of corundum, bauxite, mullite and silicon carbide burnt under medium temperature. It was excellent in resistance to thermal shock, thermal load fatigue, high-temperature mechanical flexibility and abrasion at the reducing atmosphere. They can be used in transition zone, safety zone, calcining zone and tertiary air duct of cement rotary kiln.

    Super Grade Mullite-SiC Brick for Cement/Lime Kiln (MUSIC-168A, 165A)
    Super Grade Mullite-SiC brick are one kind of enhanced product based on silicon carbide brick, through adding some amount of andalusite. They have much better resistance to thermal shock and acid and alkali corrosion as well as lower creep and higher strength under elevated temperature. They can be used in transition zone, safety zone and calcining zone of cement rotary kiln.


    Mullite-SiC Brick for Cement/Lime Kiln Mullite-SiC Brick for Cement/Lime Kiln

    Mullite-SiC Brick for Cement/Lime Kiln Mullite-SiC Brick for Cement/Lime Kiln

    The performance of Mullite-SiC Brick for Cement/Lime Kiln (MUSIC) comes from its process. First of all, it is necessary to select super-grade bauxite with AI2O3 higher than 80% in raw materials. Silicon carbide should be pure and Mohs hardness should be close to 9.5. The selection of silicon carbide should be very strict. This mineral is very rare. Most products use SiO2 and C to synthesize SiC at high temperature in electric furnace. Different raw materials will lead to quality differences. At present, in the production process of SiC, SiO2 in raw materials comes from natural silica, C is taken from coal coke and petroleum coke. According to our research results, the silicon carbide synthesized from petroleum coke and SiO2 has high hardness and wear resistance, and is suitable for use as MUSIC. The main crystalline phases of fired bricks made from these raw materials are mullite, silicon carbide and corundum, which have high hardness, which lays the foundation for dense and high-strength refractory products.

    Mullite-SiC Brick for Cement/Lime Kiln is characterized by high strength, wear resistance and Thermal Shock Resistance (TSR), and has achieved good use effect in the use of rotary kiln. The structure of the silica mullite brick is dense, the mullite and SiC crystals are stable, and the brick surface forms a continuous dense layer of SiO2, which prevents the erosion of gas and molten substances. SiC has high thermal conductivity, low thermal expansion coefficient and good TSR. These performance characteristics make the Mullite-SiC Brick for Cement/Lime Kiln not easy to break and flake, and because the thermal conductivity is lower than that of the magnesia material, the cylinder will not be heated too high, which not only ensures the normal operation of the rotary kiln cylinder, but also saves fuel.

    In addition, the service performance of Mullite-SiC Brick for Cement/Lime Kiln is also significantly better than that of Spalling Resistant High Alumina Brick and Phosphate Bonded High Alumina Refractory Brick with good wear resistance.
    Because the erosion of chlor-alkali components and poor TSR are the main reasons for the damage of refractory bricks in the transition zone, this product has a unique way to use neutral high-alumina bauxite clinker and silicon carbide as the main materials, and add andalusite for production. It has a relatively low apparent porosity. At the same time, it reduces the erosion effect of alkali sulfur on the lining bricks by taking advantage of the large infiltration angle between cement/Lime materials and alkali sulfur components and silicon carbide, Using the andalusite in the product to produce irreversible micro-expansion effect during secondary mullitization in the cement kiln (the test result is about 0.45%), the product will not shrink when encountering cooling, offset the shrinkage stress, and no structural peeling.

    Compared with Magnesite spinel brick (MS), the thermal conductivity of Mullite-SiC Brick for Cement/Lime Kiln is relatively low, and the temperature of the cylinder where the Mullite-SiC Brick for Cement/Lime Kiln is used is relatively low under the same conditions. Therefore, under the social development trend of increasing attention to energy conservation and environmental protection, Mullite-SiC Brick for Cement/Lime Kiln is increasingly used in cement/Lime rotary kiln. Generally, MUSIC-165 can be used in the upper transition zone. Due to the high temperature and severe wear and erosion at the lower transition zone and kiln mouth, only CMAS or MUSIC-168 can be used.
    Mullite-SiC Brick for Cement/Lime Kiln has the advantages of stronger corrosion resistance and the disadvantages of high thermal conductivity. In the systematic treatment of garbage and cement/Lime rotary kiln, magnesia-alumina spinel brick has better corrosion resistance to alkali and sulfur. Therefore, in large rotary kiln, magnesia-alumina spinel brick is still mostly used for masonry from the perspective of safety factor.

    Refrateknik1 We can produce Refratechnik standard Mullite-SiC Brick for Cement/Lime Kiln, such as:

    RA SiC T

    More+

    Mullite-SiC Brick for Cement/Lime Kiln (MUSIC-168, 165, 155)
    Mullite-SiC brick are mainly made of corundum, bauxite, mullite and silicon carbide burnt under medium temperature. It was excellent in resistance to thermal shock, thermal load fatigue, high-temperature mechanical flexibility and abrasion at the reducing atmosphere. They can be used in transition zone, safety zone, calcining zone and tertiary air duct of cement rotary kiln.

    Super Grade Mullite-SiC Brick for Cement/Lime Kiln (MUSIC-168A, 165A)
    Super Grade Mullite-SiC brick are one kind of enhanced product based on silicon carbide brick, through adding some amount of andalusite. They have much better resistance to thermal shock and acid and alkali corrosion as well as lower creep and higher strength under elevated temperature. They can be used in transition zone, safety zone and calcining zone of cement rotary kiln.


    Mullite-SiC Brick for Cement/Lime Kiln Mullite-SiC Brick for Cement/Lime Kiln

    Mullite-SiC Brick for Cement/Lime Kiln Mullite-SiC Brick for Cement/Lime Kiln

    The performance of Mullite-SiC Brick for Cement/Lime Kiln (MUSIC) comes from its process. First of all, it is necessary to select super-grade bauxite with AI2O3 higher than 80% in raw materials. Silicon carbide should be pure and Mohs hardness should be close to 9.5. The selection of silicon carbide should be very strict. This mineral is very rare. Most products use SiO2 and C to synthesize SiC at high temperature in electric furnace. Different raw materials will lead to quality differences. At present, in the production process of SiC, SiO2 in raw materials comes from natural silica, C is taken from coal coke and petroleum coke. According to our research results, the silicon carbide synthesized from petroleum coke and SiO2 has high hardness and wear resistance, and is suitable for use as MUSIC. The main crystalline phases of fired bricks made from these raw materials are mullite, silicon carbide and corundum, which have high hardness, which lays the foundation for dense and high-strength refractory products.

    Mullite-SiC Brick for Cement/Lime Kiln is characterized by high strength, wear resistance and Thermal Shock Resistance (TSR), and has achieved good use effect in the use of rotary kiln. The structure of the silica mullite brick is dense, the mullite and SiC crystals are stable, and the brick surface forms a continuous dense layer of SiO2, which prevents the erosion of gas and molten substances. SiC has high thermal conductivity, low thermal expansion coefficient and good TSR. These performance characteristics make the Mullite-SiC Brick for Cement/Lime Kiln not easy to break and flake, and because the thermal conductivity is lower than that of the magnesia material, the cylinder will not be heated too high, which not only ensures the normal operation of the rotary kiln cylinder, but also saves fuel.

    In addition, the service performance of Mullite-SiC Brick for Cement/Lime Kiln is also significantly better than that of Spalling Resistant High Alumina Brick and Phosphate Bonded High Alumina Refractory Brick with good wear resistance.
    Because the erosion of chlor-alkali components and poor TSR are the main reasons for the damage of refractory bricks in the transition zone, this product has a unique way to use neutral high-alumina bauxite clinker and silicon carbide as the main materials, and add andalusite for production. It has a relatively low apparent porosity. At the same time, it reduces the erosion effect of alkali sulfur on the lining bricks by taking advantage of the large infiltration angle between cement/Lime materials and alkali sulfur components and silicon carbide, Using the andalusite in the product to produce irreversible micro-expansion effect during secondary mullitization in the cement kiln (the test result is about 0.45%), the product will not shrink when encountering cooling, offset the shrinkage stress, and no structural peeling.

    Compared with Magnesite spinel brick (MS), the thermal conductivity of Mullite-SiC Brick for Cement/Lime Kiln is relatively low, and the temperature of the cylinder where the Mullite-SiC Brick for Cement/Lime Kiln is used is relatively low under the same conditions. Therefore, under the social development trend of increasing attention to energy conservation and environmental protection, Mullite-SiC Brick for Cement/Lime Kiln is increasingly used in cement/Lime rotary kiln. Generally, MUSIC-165 can be used in the upper transition zone. Due to the high temperature and severe wear and erosion at the lower transition zone and kiln mouth, only CMAS or MUSIC-168 can be used.
    Mullite-SiC Brick for Cement/Lime Kiln has the advantages of stronger corrosion resistance and the disadvantages of high thermal conductivity. In the systematic treatment of garbage and cement/Lime rotary kiln, magnesia-alumina spinel brick has better corrosion resistance to alkali and sulfur. Therefore, in large rotary kiln, magnesia-alumina spinel brick is still mostly used for masonry from the perspective of safety factor.

    Refrateknik1 We can produce Refratechnik standard Mullite-SiC Brick for Cement/Lime Kiln, such as:

    RA SiC T

    OSYMEN

    Al2O3

    SiO2 + SiC

    SiC

    AP

    BD

    CCS

    RUL

    TSR

    1100°C Water

    PLC

    WR

    %

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    %

    Cm3

    MUSIC-168A

    66.0

    27-32

    14

    19

    2.70

    100

    1660

    17

    0.30

    3.5

    MUSIC-168

    66.0

    27-31

    10

    19

    2.68

    100

    1660

    12

    0.28

    3.5

    MUSIC-165A

    64.0

    27-32

    10

    19

    2.65

    95

    1610

    14

    0.28

    3.5

    MUSIC-165

    64.0

    24-30

    8

    19

    2.63

    95

    1610

    12

    0.20

    3.8

    MUSIC-155

    66.0

    27-32

    6

    19

    2.58

    90

    1560

    14

    0.10

    4.0

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  PLC: Permanent Linear Change  |  WR: Wear Risistance

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  • Alkali Resistant Brick for Cement/Lime Kiln

    Alkali Resistant Brick for Cement/Lime Kiln

    Alkali Resistant Brick for Cement/Lime Kiln: are generally used now and are often used in Cement/Lime industry and transition zone of rotary kiln.
    Among them, it
     have the advantages of high load softening temperature, good high temperature structural performance and good thermal shock stability;
    At the same time, it has the advantages of strong corrosion resistance, not easy to peel off and wear resistance. It overcomes the disadvantages of poor thermal shock resistance of ordinary high alumina brick, low corrosion resistance of cement clinker and low soft load of phosphoric acid brick.

    It is made by adding additives to improve the compressive strength. This product has the characteristics of high strength, stable volume and good alkali corrosion resistance.

    It is common in cement kiln preheater, calciner, tertiary air duct and so on.

    High Strength Alkali Resistant Brick for Cement Kiln

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard High Strength Alkali Resistant Brick for Cement/Lime Kiln

    rhimagnesita We can produce RHI Magnesita standard High Strength Alkali Resistant Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard High Strength Alkali Resistant Brick for Cement/Lime Kiln, such as: RA 40T

    More+

    Alkali Resistant Brick for Cement/Lime Kiln: are generally used now and are often used in Cement/Lime industry and transition zone of rotary kiln.
    Among them, it
     have the advantages of high load softening temperature, good high temperature structural performance and good thermal shock stability;
    At the same time, it has the advantages of strong corrosion resistance, not easy to peel off and wear resistance. It overcomes the disadvantages of poor thermal shock resistance of ordinary high alumina brick, low corrosion resistance of cement clinker and low soft load of phosphoric acid brick.

    It is made by adding additives to improve the compressive strength. This product has the characteristics of high strength, stable volume and good alkali corrosion resistance.

    It is common in cement kiln preheater, calciner, tertiary air duct and so on.

    High Strength Alkali Resistant Brick for Cement Kiln

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard High Strength Alkali Resistant Brick for Cement/Lime Kiln

    rhimagnesita We can produce RHI Magnesita standard High Strength Alkali Resistant Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard High Strength Alkali Resistant Brick for Cement/Lime Kiln, such as: RA 40T

    OSYMEN

    Al2O3

    Fe2O3

    AP

    BD

    CCS

    RUL

    TSR

    1100°C Water

    Alkali-Resistant

    1100°C X 5H

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    Grade

    AR-40S

    25-40

    2.0

    19

    2.20

    60

    1250

    25

    1

    AR-40A

    25-40

    2.0

    20

    2.15

    40

    1350

    10

    1

    CPNJ-40B

    25-40

    2.0

    21

    2.10

    30

    1300

    10

    1

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

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  • Anti-spalling High alumina Brick for Cement/Lime Kiln

    Anti-spalling High alumina Brick for Cement/Lime Kiln

    Anti-spalling high alumina brick, crafted from high-quality high alumina bauxite clinker and zircon-containing materials, are known for their superior resistance to peeling or spalling. Their manufacturing involves adding a specific amount of composite binders and additives. Key to their design is the controlled granulation of the mud material, followed by molding and high-temperature firing​​.

    The principle behind their anti-spalling capability lies in enhancing their resistance to crack formation and propagation. This is achieved by incorporating materials with varying expansion coefficients into the mix, creating intentional microcracks post-firing due to thermal expansion mismatch. Commonly used materials for this purpose include andalusite, sillimanite, and zircon. Andalusite decomposes at around 1325-1350°C, expanding by 16-18% by volume; sillimanite decomposes at 1500°C with an 8.4% volume expansion, while zircon’s toughening effect comes from the transformation between tetragonal and monoclinic zirconia phases, as well as the mullite effect. Adding zirconia to high alumina bricks significantly improves their wear resistance and anti-spalling characteristics​​.

    In response, the 1990s saw the development of a second generation of anti-spalling high alumina bricks. These utilize high alumina bauxite and zircon powder as additives, along with resin, to enhance the micro-crack “toughening” effect of zirconia. This generation improved upon the high-temperature flexural strength, load softening temperature, and compressive strength compared to its predecessor, particularly in the transition zone of cement rotary kilns​​.

    In comparison to high alumina bricks, anti-spalling high alumina bricks have higher strength, better chemical corrosion resistance, a lower thermal expansion coefficient, and reduced thermal conductivity. They offer improved resistance to environmental conditions such as potassium, sodium, sulfur, chlorine, and alkaline salts. Consequently, they are ideal for use in the transition and decomposition zones of cement kilns. Their enhanced thermal shock resistance and adaptability make them suitable for preheating zones in rotary kilns, calciners, and grate coolers​​.

    In summary, anti-spalling high alumina bricks are a specialized type of refractory material designed to withstand harsh conditions in various industrial processes, particularly in cement kilns. Their development and refinement over the years underscore the continuous innovation in the field of refractory materials to meet the evolving demands of industrial applications.

    Anti-spalling High alumina Brick

    rhimagnesita We can produce RHI Magnesita standard Anti-spalling High alumina Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Anti-spalling High alumina Brick for Cement/Lime Kiln

    More+

    Anti-spalling high alumina brick, crafted from high-quality high alumina bauxite clinker and zircon-containing materials, are known for their superior resistance to peeling or spalling. Their manufacturing involves adding a specific amount of composite binders and additives. Key to their design is the controlled granulation of the mud material, followed by molding and high-temperature firing​​.

    The principle behind their anti-spalling capability lies in enhancing their resistance to crack formation and propagation. This is achieved by incorporating materials with varying expansion coefficients into the mix, creating intentional microcracks post-firing due to thermal expansion mismatch. Commonly used materials for this purpose include andalusite, sillimanite, and zircon. Andalusite decomposes at around 1325-1350°C, expanding by 16-18% by volume; sillimanite decomposes at 1500°C with an 8.4% volume expansion, while zircon’s toughening effect comes from the transformation between tetragonal and monoclinic zirconia phases, as well as the mullite effect. Adding zirconia to high alumina bricks significantly improves their wear resistance and anti-spalling characteristics​​.

    In response, the 1990s saw the development of a second generation of anti-spalling high alumina bricks. These utilize high alumina bauxite and zircon powder as additives, along with resin, to enhance the micro-crack “toughening” effect of zirconia. This generation improved upon the high-temperature flexural strength, load softening temperature, and compressive strength compared to its predecessor, particularly in the transition zone of cement rotary kilns​​.

    In comparison to high alumina bricks, anti-spalling high alumina bricks have higher strength, better chemical corrosion resistance, a lower thermal expansion coefficient, and reduced thermal conductivity. They offer improved resistance to environmental conditions such as potassium, sodium, sulfur, chlorine, and alkaline salts. Consequently, they are ideal for use in the transition and decomposition zones of cement kilns. Their enhanced thermal shock resistance and adaptability make them suitable for preheating zones in rotary kilns, calciners, and grate coolers​​.

    In summary, anti-spalling high alumina bricks are a specialized type of refractory material designed to withstand harsh conditions in various industrial processes, particularly in cement kilns. Their development and refinement over the years underscore the continuous innovation in the field of refractory materials to meet the evolving demands of industrial applications.

    Anti-spalling High alumina Brick

    rhimagnesita We can produce RHI Magnesita standard Anti-spalling High alumina Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Anti-spalling High alumina Brick for Cement/Lime Kiln

    OSYMEN

    Al2O3

    ZrO2

    Fe2O3

    AP

    BD

    CCS

    RUL

    TSR

    1100°C Water

    %

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    CYRS-85

    85.0

    8-10

    1.5

    22

    2.70

    70

    1550

    30

    CYRS-80

    80.0

    8-10

    1.5

    22

    2.70

    60

    1550

    30

    CYRS-75

    75.0

    8-10

    1.5

    22

    2.55

    60

    1500

    30

    CYRS-70S

    70.0

    6.0

    1.5

    22

    2.55

    60

    1470

    20

    CYRS-70

    70.0

     

    1.5

    20

    2.55

    60

    1470

    15

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

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  • Magnesia Hercynite Brick for Cement/Lime Kiln

    Magnesia Hercynite Brick for Cement/Lime Kiln

    Magnesia Hercynite Brick for Cement/Lime Kiln (MH) made of magnesite and hercynite, processed by high temperature sintering. It was widely used both in burning and transition zone. It can reduce the standby inventory and thus lower cost. It is good in clinker coating and resistance to thermal shock. Clinker coating can form rapidly and stably. The coating doesn’t fall easily and thus it reduce the kiln proper temperature. It is excellent in resistance to chemical corrosion, overheat damage, oxidation reduction without conditions such as alkali cracking or loosening. It is good in resistance to thermal load fatigue, especially in high temperature mechanical flexibility and wearing resistance. It is the best choice to be used at kiln tire areas.
    Magnesite Hercynite is mainly composed of MgO-Fe2O3-Al2O3 spinel and periclase.

    Magnesia Hercynite Brick, a critical component in modern refractory technology, offer significant advantages in both cement and lime kilns. Their unique composition and properties address several key operational challenges in these high-temperature environments.

     

    Magnesia Hercynite brick In Cement Kilns

    Composition and Manufacturing:

    • Magnesia Hercynite brick spinel bricks are typically made from high-purity magnesia sand and aluminum-iron spinel sand. The process involves careful gradation, high-pressure molding, and strict control over firing temperature and atmosphere.
    • These bricks have emerged as a chromium-free alternative to traditional magnesia-chrome bricks, offering an environmentally friendly solution​​.

    Properties and Performance:

    • They display high compressive strength, excellent thermal shock stability, and resistance to thermal creep.
    • The bricks are highly resistant to erosion and penetration, with a high load softening temperature.
    • They also provide better adhesion for the kiln skin, which is crucial in preventing environmental pollution from hexavalent chromium, a byproduct of magnesia-chrome brick usage​​.
    • Key benefits include good anti-erosion performance, rapid and stable kiln skin formation, and enhanced resistance to temperature fluctuations in cement kilns. Their low thermal conductivity also leads to significant energy savings​​.

     

    Magnesia Hercynite brick In Lime Kilns

    While specific details on the application of Magnesia Hercynite brick in lime kilns are less readily available, it can be inferred from their properties and performance in cement kilns that similar benefits would apply. These would include high thermal resistance, environmental safety, and energy efficiency.

     

    Magnesia Hercynite Brick Advantages Over Other Refractories:

    In Cement Kilns:

    • Magnesia Hercynite brick are being increasingly used in high-temperature zones of cement rotary kilns due to their structural flexibility and excellent kiln skin hanging performance​​.
    • They form a highly viscous layer on the hot surface, improving kiln skin performance and durability. The addition of fused iron-aluminum spinel composite imparts high strength and thermal shock resistance, effectively resisting chemical erosion from cement clinker liquids and gases like alkali and sulfur​​.
    • The mismatch in thermal expansion between spinel and periclase creates micro-cracks that buffer stress from temperature changes, preventing brittle explosions of the lining bricks​​.
    • The bricks are chrome-free, aligning with modern environmental standards​​.

     

    In summary, Magnesia Hercynite brick represent a significant advancement in refractory materials for high-temperature industrial applications. Their use in cement and, potentially, lime kilns, underscores the ongoing evolution in refractory technology to meet the demanding conditions of modern industrial processes. These bricks not only enhance operational efficiency and safety but also contribute to environmental sustainability by eliminating harmful byproducts associated with older refractory materials.

     
    Magnesia Hercynite brick  Magnesia Hercynite brick

    Magnesia Hercynite brick  Magnesia Hercynite brick  

    In the process of use Magnesia Hercynite Brick for Cement/Lime Kiln, the hot surface of the brick forms a layer of calcium iron or calcium-aluminum-iron oxide with high viscosity, which improves the performance of clinker coating and the firmness of coating, and is suitable for extending the service life of the protective lining brick.

    Due to the inconsistent thermal expansion between spinel and periclase during firing and cooling, the microcracks formed between them can buffer the stress impact caused by temperature changes and avoid the brittle cracking of lining bricks.

    HERCYNITE, “Active Spinel”, provides excellent physical and chemical features to bricks

    High ductility (fracture-mechanical strength) and flexibility against cracking and spalling

     Extreme high strength against spalling from mechanical stress(ovality, shell deformation, tyre areas, thermo-shock etc.)

    Excellent coating formation, during operation, Hercynite brick could form very stable coating and hold it In the form of brownmillerite with clinker melt phase, this performance is not comparable by conventional CMAS brick.

    Excellent chemical resistance against alkalis, sulphat, chlorine, clinker phases etc

    Excellent thermals strength(refractoriess)

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard Magnesia Hercynite Brick for Cement/Lime Kiln

    rhimagnesita We can produce RHI Magnesita standard Magnesia Hercynite Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Magnesia Hercynite Brick for Cement/Lime Kiln, such as:

    PG 90
    FERROMAGS

    More+

    Magnesia Hercynite Brick for Cement/Lime Kiln (MH) made of magnesite and hercynite, processed by high temperature sintering. It was widely used both in burning and transition zone. It can reduce the standby inventory and thus lower cost. It is good in clinker coating and resistance to thermal shock. Clinker coating can form rapidly and stably. The coating doesn’t fall easily and thus it reduce the kiln proper temperature. It is excellent in resistance to chemical corrosion, overheat damage, oxidation reduction without conditions such as alkali cracking or loosening. It is good in resistance to thermal load fatigue, especially in high temperature mechanical flexibility and wearing resistance. It is the best choice to be used at kiln tire areas.
    Magnesite Hercynite is mainly composed of MgO-Fe2O3-Al2O3 spinel and periclase.

    Magnesia Hercynite Brick, a critical component in modern refractory technology, offer significant advantages in both cement and lime kilns. Their unique composition and properties address several key operational challenges in these high-temperature environments.

     

    Magnesia Hercynite brick In Cement Kilns

    Composition and Manufacturing:

    • Magnesia Hercynite brick spinel bricks are typically made from high-purity magnesia sand and aluminum-iron spinel sand. The process involves careful gradation, high-pressure molding, and strict control over firing temperature and atmosphere.
    • These bricks have emerged as a chromium-free alternative to traditional magnesia-chrome bricks, offering an environmentally friendly solution​​.

    Properties and Performance:

    • They display high compressive strength, excellent thermal shock stability, and resistance to thermal creep.
    • The bricks are highly resistant to erosion and penetration, with a high load softening temperature.
    • They also provide better adhesion for the kiln skin, which is crucial in preventing environmental pollution from hexavalent chromium, a byproduct of magnesia-chrome brick usage​​.
    • Key benefits include good anti-erosion performance, rapid and stable kiln skin formation, and enhanced resistance to temperature fluctuations in cement kilns. Their low thermal conductivity also leads to significant energy savings​​.

     

    Magnesia Hercynite brick In Lime Kilns

    While specific details on the application of Magnesia Hercynite brick in lime kilns are less readily available, it can be inferred from their properties and performance in cement kilns that similar benefits would apply. These would include high thermal resistance, environmental safety, and energy efficiency.

     

    Magnesia Hercynite Brick Advantages Over Other Refractories:

    In Cement Kilns:

    • Magnesia Hercynite brick are being increasingly used in high-temperature zones of cement rotary kilns due to their structural flexibility and excellent kiln skin hanging performance​​.
    • They form a highly viscous layer on the hot surface, improving kiln skin performance and durability. The addition of fused iron-aluminum spinel composite imparts high strength and thermal shock resistance, effectively resisting chemical erosion from cement clinker liquids and gases like alkali and sulfur​​.
    • The mismatch in thermal expansion between spinel and periclase creates micro-cracks that buffer stress from temperature changes, preventing brittle explosions of the lining bricks​​.
    • The bricks are chrome-free, aligning with modern environmental standards​​.

     

    In summary, Magnesia Hercynite brick represent a significant advancement in refractory materials for high-temperature industrial applications. Their use in cement and, potentially, lime kilns, underscores the ongoing evolution in refractory technology to meet the demanding conditions of modern industrial processes. These bricks not only enhance operational efficiency and safety but also contribute to environmental sustainability by eliminating harmful byproducts associated with older refractory materials.

     
    Magnesia Hercynite brick  Magnesia Hercynite brick

    Magnesia Hercynite brick  Magnesia Hercynite brick  

    In the process of use Magnesia Hercynite Brick for Cement/Lime Kiln, the hot surface of the brick forms a layer of calcium iron or calcium-aluminum-iron oxide with high viscosity, which improves the performance of clinker coating and the firmness of coating, and is suitable for extending the service life of the protective lining brick.

    Due to the inconsistent thermal expansion between spinel and periclase during firing and cooling, the microcracks formed between them can buffer the stress impact caused by temperature changes and avoid the brittle cracking of lining bricks.

    HERCYNITE, “Active Spinel”, provides excellent physical and chemical features to bricks

    High ductility (fracture-mechanical strength) and flexibility against cracking and spalling

     Extreme high strength against spalling from mechanical stress(ovality, shell deformation, tyre areas, thermo-shock etc.)

    Excellent coating formation, during operation, Hercynite brick could form very stable coating and hold it In the form of brownmillerite with clinker melt phase, this performance is not comparable by conventional CMAS brick.

    Excellent chemical resistance against alkalis, sulphat, chlorine, clinker phases etc

    Excellent thermals strength(refractoriess)

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard Magnesia Hercynite Brick for Cement/Lime Kiln

    rhimagnesita We can produce RHI Magnesita standard Magnesia Hercynite Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Magnesia Hercynite Brick for Cement/Lime Kiln, such as:

    PG 90
    FERROMAGS

    OSYMEN

    MgO

    Fe2O3
    +SiO2

    AP

    BD

    CCS

    RUL

    TSR

    950°C Air

    TE

    1100°C

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    %

    MH-8AX

    89.0

    6-12

    15.0

    3.00

    70

    >1700

    >100

    1.18

    MH-8AS

    88.0

    6-12

    16.0

    2.98

    70

    >1700

    >100

    1.18

    MH-8A

    87.0

    6-12

    16.5

    2.96

    65

    >1700

    >100

    1.18

    MH-8B

    86.0

    6-12

    17.0

    2.92

    60

    >1680

    >90

    1.18

    MH-10AX

    88.0

    7-12

    15.0

    3.01

    70

    >1700

    >100

    1.18

    MH-10AS

    87.0

    7-12

    16.0

    2.99

    70

    >1700

    >100

    1.18

    MH-10A

    86.0

    7-12

    16.0

    2.97

    65

    >1700

    >100

    1.18

    MH-10B

    85.0

    7-12

    17.0

    2.92

    60

    >1680

    >90

    1.18

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

    Close
  • Magnesia Spinel Brick for Cement/Lime Kiln

    Magnesia Spinel Brick for Cement/Lime Kiln

    Magnesia Spinel Brick for Cement/Lime Kiln (MS) made of magnesia and synthetic spinel, processed by high temperature sintering. MA Brick are most extensively, most mature and most economical bricks used in the world for cement rotary kiln transition zone under any condition.

    It has many characteristics such as excellent resistance to thermal shock, thermal load damage, and chemical corrosion, overheat fatigue, oxidation reduction and wearing as well as high temperature mechanical flexibility. However, it is not good in clinker coating and high in thermal conductivity. So, we recommend it as the first choice for rotary kiln transition zone bricks.

    Magnesia Spinel Brick have been more broadly used in recent years. The term “spinel” as used in describing this type of brick refers to the mineral MgO•AI2O3. In discussing magnesite chrome brick and chrome ores, the term “spinel” is often used to refer to the family of minerals that crystallize in the cubic system and have the general formula RO•R2O3, where RO may be MgO, and FeO and R2O3 may be Fe2O3, Al2O3 and Cr2O3. While usage of the term “spinel” in this broader sense is accepted practice, the mineral spinel has the chemical formula MgO•Al2O3. It has become accepted usage to use the term Magnesite-spinel Brick to refer to the products containing MgO•Al2O3. 

    A family of Magnesia Spinel Brick has been developed by combining the constituent raw materials in various ways. Some Magnesia Spinel Brick are made by adding fine alumina to compositions composed mainly of magnesia. On firing, the fine alumina reacts with the fine magnesia in the matrix of the brick to form an in situ spinel bond. An alternative is to add spinel grain to a composition containing magnesia.

    One of the principal benefits of combining spinel and magnesia is that the resulting compositions have better spalling resistance than brick made solely with dead burned magnesite. This feature results in the avoidance or inhibition of peel spalling caused by temperature cycling and infiltration of constituents from the service environment. Spinel additions also lower the thermal expansion coefficients of magnesite compositions. This can reduce thermal stresses that could contribute to cracking in certain environments.

    A desire to use chrome-free basic brick for environmental reasons has increased the importance of Magnesia Spinel Brick. Trivalent chromium (Cr+3) present in Magnesia Chrome Brick can be converted to the hexavalent state (Cr+6) by reaction with alkalies, alkaline earth constituents and other compounds that are present in some service environments. These factors have led to broad use of Magnesia Spinel Brick in rotary cement kilns. They have excellent spalling resistance, good thermal expansion characteristics and have been shown to provide excellent service results in many rotary kilns.

    Magnesia Spinel Brick  Magnesia Spinel Brick

    Magnesia Spinel Brick  Magnesia Spinel Brick

    Magnesia Spinel Brick  Magnesia Spinel Brick for Cement Kiln 05 www.osymen.com

    Magnesite Spinel Brick for Cement Kiln 011 www.osymen.com  Magnesite Spinel Brick for Cement Kiln 010 www.osymen.com

    Magnesite Spinel Brick for Cement Kiln 05 www.osymen.com  Magnesite Spinel Brick for Cement Kiln 06 www.osymen.com 1         

     

    We can produce Harbinson Walker International standard Magnesia Spinel Brick for Cement/Lime Kiln, such as:

    VESTA

    Refrateknik1 We can produce Refratechnik standard Magnesia Spinel Brick for Cement/Lime Kiln, such as:

    TOPMAG A1
    TOPMAG AF
    TOPMAG TR
    RG S

    More+

    Magnesia Spinel Brick for Cement/Lime Kiln (MS) made of magnesia and synthetic spinel, processed by high temperature sintering. MA Brick are most extensively, most mature and most economical bricks used in the world for cement rotary kiln transition zone under any condition.

    It has many characteristics such as excellent resistance to thermal shock, thermal load damage, and chemical corrosion, overheat fatigue, oxidation reduction and wearing as well as high temperature mechanical flexibility. However, it is not good in clinker coating and high in thermal conductivity. So, we recommend it as the first choice for rotary kiln transition zone bricks.

    Magnesia Spinel Brick have been more broadly used in recent years. The term “spinel” as used in describing this type of brick refers to the mineral MgO•AI2O3. In discussing magnesite chrome brick and chrome ores, the term “spinel” is often used to refer to the family of minerals that crystallize in the cubic system and have the general formula RO•R2O3, where RO may be MgO, and FeO and R2O3 may be Fe2O3, Al2O3 and Cr2O3. While usage of the term “spinel” in this broader sense is accepted practice, the mineral spinel has the chemical formula MgO•Al2O3. It has become accepted usage to use the term Magnesite-spinel Brick to refer to the products containing MgO•Al2O3. 

    A family of Magnesia Spinel Brick has been developed by combining the constituent raw materials in various ways. Some Magnesia Spinel Brick are made by adding fine alumina to compositions composed mainly of magnesia. On firing, the fine alumina reacts with the fine magnesia in the matrix of the brick to form an in situ spinel bond. An alternative is to add spinel grain to a composition containing magnesia.

    One of the principal benefits of combining spinel and magnesia is that the resulting compositions have better spalling resistance than brick made solely with dead burned magnesite. This feature results in the avoidance or inhibition of peel spalling caused by temperature cycling and infiltration of constituents from the service environment. Spinel additions also lower the thermal expansion coefficients of magnesite compositions. This can reduce thermal stresses that could contribute to cracking in certain environments.

    A desire to use chrome-free basic brick for environmental reasons has increased the importance of Magnesia Spinel Brick. Trivalent chromium (Cr+3) present in Magnesia Chrome Brick can be converted to the hexavalent state (Cr+6) by reaction with alkalies, alkaline earth constituents and other compounds that are present in some service environments. These factors have led to broad use of Magnesia Spinel Brick in rotary cement kilns. They have excellent spalling resistance, good thermal expansion characteristics and have been shown to provide excellent service results in many rotary kilns.

    Magnesia Spinel Brick  Magnesia Spinel Brick

    Magnesia Spinel Brick  Magnesia Spinel Brick

    Magnesia Spinel Brick  Magnesia Spinel Brick for Cement Kiln 05 www.osymen.com

    Magnesite Spinel Brick for Cement Kiln 011 www.osymen.com  Magnesite Spinel Brick for Cement Kiln 010 www.osymen.com

    Magnesite Spinel Brick for Cement Kiln 05 www.osymen.com  Magnesite Spinel Brick for Cement Kiln 06 www.osymen.com 1         

     

    We can produce Harbinson Walker International standard Magnesia Spinel Brick for Cement/Lime Kiln, such as:

    VESTA

    Refrateknik1 We can produce Refratechnik standard Magnesia Spinel Brick for Cement/Lime Kiln, such as:

    TOPMAG A1
    TOPMAG AF
    TOPMAG TR
    RG S

    OSYMEN

    MgO

    Al2O3

    AP

    BD

    CCS

    RUL

    TSR

    950°C Air

    TE

    1100°C

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    %

    MS-8AX

    88.0

    5-10

    15.0

    2.98

    70

    >1700

    >100

    1.20

    MS-8AS

    87.0

    5-10

    16.0

    2.96

    65

    >1700

    >100

    1.20

    MS-8A

    86.0

    5-10

    17.0

    2.94

    65

    >1700

    >100

    1.15

    MS-8B

    86.0

    5-10

    18.0

    2.92

    60

    >1700

    >100

    1.15

    MS-10AX

    85.0

    8-12

    15.0

    2.97

    70

    >1700

    >100

    1.20

    MS-10AS

    84.0

    8-12

    16.0

    2.95

    65

    >1700

    >100

    1.20

    MS-10A

    82.0

    8-12

    16.0

    2.93

    65

    >1700

    >100

    1.15

    MS-10B

    82.0

    8-12

    18.0

    2.91

    60

    >1700

    >100

    1.15

    MS-15AX

    84.0

    13-15

    15.0

    2.98

    70

    >1700

    >100

    1.20

    MS-15AS

    84.0

    13-15

    15.0

    2.96

    70

    >1700

    >100

    1.20

    MS-15A

    80.0

    13-15

    16.0

    2.94

    65

    >1700

    >100

    1.15

    MS-15B

    78.0

    13-15

    18.0

    2.92

    60

    >1700

    >100

    1.15

    MS-20AX

    78.0

    18-22

    15.0

    3.02

    70

    >1700

    >100

    1.20

    MS-20AS

    77.5

    18-22

    15.0

    3.00

    70

    >1700

    >100

    1.20

    MS-20A

    77.3

    18-22

    16.0

    2.98

    65

    >1700

    >100

    1.20

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

    Close
  • Magnesia Galaxite Brick for Cement/Lime Kiln

    Magnesia Galaxite Brick for Cement/Lime Kiln

    Magnesia Galaxite Brick (MG) is made primarily of magnesite under medium to high temperature burning with addition of some alumina, manganese oxide. It can be used both in burning and transition zones in rotary kiln instead of Magnesia Chrome Brick.

    It works well in cement rotary kiln in terms of clinker coating, with high in thermal shock resistance. It is excellent in resistance to chemical corrosion, overheat damage and wearing as well as high temperature mechanical flexibility. It is good in resistance to thermal load fatigue, especially suitable for frequent temperature change.

    GALAXITE, “Active Spinel”
    1. Smaller thermal expansion of Hercynite and Galaxite compared to the surrounding matrix (“thermal misfit”). This is the main flexibilizing effect if the common MAspinel is used as an additive in the basic cement kiln bricks.
    2. Diffusion of Fe2+ ions and Mn2+ ions into the surrounding MgO matrix.
    3. Partial diffusion of Mg2+ ions into the Hercynite or Galaxite grain and thereby Mg2+ ions form a local MA-spinel with a surplus of MgO with the alumina from the Hercynite, resulting in an additional volume expansion.
    4. The diffusion of Fe2+ ions, Mg2+ ions and Mn2+ ions proceeds during the whole operation process, such that the flexibilizing effect of its active spinels is maintained during the whole operation process.
    5. Due to the diffusion processes a “crack healing process” occurs (closing of crack flanks).

    Magnesia Galaxite Brick for Cement Kiln

    rhimagnesita We can produce RHI Magnesita standard Magnesia Galaxite Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Magnesia Galaxite Brick for Cement/Lime Kiln

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard Magnesia Galaxite Brick for Cement/Lime Kiln

    More+

    Magnesia Galaxite Brick (MG) is made primarily of magnesite under medium to high temperature burning with addition of some alumina, manganese oxide. It can be used both in burning and transition zones in rotary kiln instead of Magnesia Chrome Brick.

    It works well in cement rotary kiln in terms of clinker coating, with high in thermal shock resistance. It is excellent in resistance to chemical corrosion, overheat damage and wearing as well as high temperature mechanical flexibility. It is good in resistance to thermal load fatigue, especially suitable for frequent temperature change.

    GALAXITE, “Active Spinel”
    1. Smaller thermal expansion of Hercynite and Galaxite compared to the surrounding matrix (“thermal misfit”). This is the main flexibilizing effect if the common MAspinel is used as an additive in the basic cement kiln bricks.
    2. Diffusion of Fe2+ ions and Mn2+ ions into the surrounding MgO matrix.
    3. Partial diffusion of Mg2+ ions into the Hercynite or Galaxite grain and thereby Mg2+ ions form a local MA-spinel with a surplus of MgO with the alumina from the Hercynite, resulting in an additional volume expansion.
    4. The diffusion of Fe2+ ions, Mg2+ ions and Mn2+ ions proceeds during the whole operation process, such that the flexibilizing effect of its active spinels is maintained during the whole operation process.
    5. Due to the diffusion processes a “crack healing process” occurs (closing of crack flanks).

    Magnesia Galaxite Brick for Cement Kiln

    rhimagnesita We can produce RHI Magnesita standard Magnesia Galaxite Brick for Cement/Lime Kiln

    Refrateknik1 We can produce Refratechnik standard Magnesia Galaxite Brick for Cement/Lime Kiln

    %E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard Magnesia Galaxite Brick for Cement/Lime Kiln

    OSYMEN

    MgO

    Al2O3 + Mn2O3

    AP

    BD

    CCS

    RUL

    TSR

    950°C Air

    TE

    1100°C

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Cycles

    %

    MG-15AX

    84.7

    9-14

    15.0

    2.98

    70

    >1700

    >100

    1.15

    MG-15AS

    84.5

    9-14

    15.8

    2.96

    70

    >1700

    >100

    1.15

    MG-15A

    82.0

    9-14

    16.3

    2.94

    65

    >1700

    >100

    1.15

    MG-15B

    80.0

    9-14

    17.0

    2.92

    60

    >1700

    >100

    1.18

    MG-10AX

    85.5

    6-11

    15.5

    2.97

    70

    >1700

    >100

    1.15

    MG-10AS

    84.5

    6-11

    16.0

    2.95

    70

    >1700

    >100

    1.15

    MG-10A

    84.0

    6-11

    16.5

    2.94

    65

    >1700

    >100

    1.15

    MG-10B

    82.0

    6-11

    17.0

    2.92

    60

    >1700

    >100

    1.18

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

    Close
  • Magnesia Chrome Brick for Cement/Lime Kiln

    Magnesia Chrome Brick for Cement/Lime Kiln

    Magnesia Chrome Brick for Cement/Lime Kiln (MK) made of magnesia and chromite, processed by high temperature sintering. MK are most extensively used in the world. They are used at burning zone and transition zone of cement kilns. They are adaptive to any conditions and economical. With properties of good clinker coating,sound thermal shock resistance, good heat load weariness resistance,good chemical corrosion resistance,good thermal fatigue resistance, good oxidation-reduction resistance.  Disadvantages are hazardous to environment. OSYMEN therefore developed low chrome magnesia chrome bricks or chrome free products as alternatives to traditional MK products.

    Magnesia chrome Brick for Cement Kiln

    Magnesia-Chrome Brick in Cement and Lime Kilns

    Magnesia-chrome brick are a type of refractory material extensively used in high-temperature industrial processes, including cement and lime kilns. Their unique properties and composition make them highly suitable for these demanding environments.

     

    Magnesia Chrome Brick In Cement Kilns

    Composition and Properties:

    • Made from magnesia and chromite, magnesia-chrome bricks (MK) are processed through high-temperature sintering.
    • They offer excellent clinker coating, sound thermal shock resistance, heat load weariness resistance, chemical corrosion resistance, thermal fatigue resistance, and oxidation-reduction resistance.

    Applications and Advantages:

    • These bricks are primarily used in the burning zone and transition zone of cement kilns.
    • They adapt well to various conditions and are economical. Additionally, they help in enhancing the performance of the kiln skin and prolonging the lining life in cement kilns.
    • However, they have environmental disadvantages, as they can be hazardous. This has led to the development of low chrome or chrome-free alternatives​​.

     

    Magnesia Chrome Brick In Lime Kilns

    Composition and Features:

    • Semi-rebonded magnesia-chrome brick, a variant of magnesia-chrome bricks, consist of partially fused magnesia chrome sand.
    • Their main mineral composition includes periclase, spinel, and a small amount of silicate, providing a structure that is favorable for thermal shock resistance.

    Applications and Advantages:

    • These bricks are primarily used in the lime kilns, especially in zones prone to significant wear and tear.
    • They have a compact structure, low porosity, good high-temperature strength, and better thermal shock resistance compared to Direct-Bonded Magnesia-Chrome Brick (DMK).
    • In addition to lime kilns, they are also used in various parts of the steelmaking process and in rotary cement kilns.
    • Semi-rebonded magnesia-chrome bricks are cost-effective and can, within certain limits, replace direct-bonded magnesia-chrome bricks​​​​.

     

    Summary

    Magnesia-chrome bricks play a crucial role in the operation of cement and lime kilns, offering a blend of durability, resistance to high temperatures, and thermal shock. While their use in cement kilns has prompted environmental concerns leading to the development of less hazardous alternatives, in lime kilns, particularly with semi-rebonded variants, they remain a cost-effective and resilient choice. This underscores the ongoing evolution in refractory technology to meet industrial requirements while addressing environmental concerns.

     

    Refrateknik1 We can produce Refratechnik standard Magnesia Chrome Brick for Cement Kiln, such as:
    PX 83S

    More+

    Magnesia Chrome Brick for Cement/Lime Kiln (MK) made of magnesia and chromite, processed by high temperature sintering. MK are most extensively used in the world. They are used at burning zone and transition zone of cement kilns. They are adaptive to any conditions and economical. With properties of good clinker coating,sound thermal shock resistance, good heat load weariness resistance,good chemical corrosion resistance,good thermal fatigue resistance, good oxidation-reduction resistance.  Disadvantages are hazardous to environment. OSYMEN therefore developed low chrome magnesia chrome bricks or chrome free products as alternatives to traditional MK products.

    Magnesia chrome Brick for Cement Kiln

    Magnesia-Chrome Brick in Cement and Lime Kilns

    Magnesia-chrome brick are a type of refractory material extensively used in high-temperature industrial processes, including cement and lime kilns. Their unique properties and composition make them highly suitable for these demanding environments.

     

    Magnesia Chrome Brick In Cement Kilns

    Composition and Properties:

    • Made from magnesia and chromite, magnesia-chrome bricks (MK) are processed through high-temperature sintering.
    • They offer excellent clinker coating, sound thermal shock resistance, heat load weariness resistance, chemical corrosion resistance, thermal fatigue resistance, and oxidation-reduction resistance.

    Applications and Advantages:

    • These bricks are primarily used in the burning zone and transition zone of cement kilns.
    • They adapt well to various conditions and are economical. Additionally, they help in enhancing the performance of the kiln skin and prolonging the lining life in cement kilns.
    • However, they have environmental disadvantages, as they can be hazardous. This has led to the development of low chrome or chrome-free alternatives​​.

     

    Magnesia Chrome Brick In Lime Kilns

    Composition and Features:

    • Semi-rebonded magnesia-chrome brick, a variant of magnesia-chrome bricks, consist of partially fused magnesia chrome sand.
    • Their main mineral composition includes periclase, spinel, and a small amount of silicate, providing a structure that is favorable for thermal shock resistance.

    Applications and Advantages:

    • These bricks are primarily used in the lime kilns, especially in zones prone to significant wear and tear.
    • They have a compact structure, low porosity, good high-temperature strength, and better thermal shock resistance compared to Direct-Bonded Magnesia-Chrome Brick (DMK).
    • In addition to lime kilns, they are also used in various parts of the steelmaking process and in rotary cement kilns.
    • Semi-rebonded magnesia-chrome bricks are cost-effective and can, within certain limits, replace direct-bonded magnesia-chrome bricks​​​​.

     

    Summary

    Magnesia-chrome bricks play a crucial role in the operation of cement and lime kilns, offering a blend of durability, resistance to high temperatures, and thermal shock. While their use in cement kilns has prompted environmental concerns leading to the development of less hazardous alternatives, in lime kilns, particularly with semi-rebonded variants, they remain a cost-effective and resilient choice. This underscores the ongoing evolution in refractory technology to meet industrial requirements while addressing environmental concerns.

     

    Refrateknik1 We can produce Refratechnik standard Magnesia Chrome Brick for Cement Kiln, such as:
    PX 83S

    OSYMEN

    MgO

    Al2O3
    +Cr2O3

    AP

    BD

    CCS

    RUL

    TSR, 950°C

    TE

    1100°C

    %

    %

    %

    g/cm3

    MPa

    (Ta)°C

    Air Cycles

    %

    MK-4A

    78.0

    Cr2O3: 2-4

    17.0

    2.95

    65

    >1700

    >100

    1.05

    MK-4B

    76.0

    Cr2O3:  2-4

    18.0

    2.92

    60

    >1680

    >100

    1.05

    MK-9A

    80.0

    6-9

    18.0

    2.95

    50

    >1680

    >100

    1.03

    MK-9B

    78.0

    6-9

    19.0

    2.92

    45

    >1660

    >80

    1.03

    AP: Apparent Porosity   |  BD: Bulk Density  |  CCS: Cold Crushing Strength  |  RUL: Refractories Under Load  |  TSR: Thermal Shock Resistance  |  TE: Thermal Expansion

    Close
Last updated: 2024-01-03
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