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Semi-Rebonded Magnesia Chrome Brick

Semi-Rebonded Magnesia Chrome Brick

Introduction:

Semi-Rebonded Magnesia Chrome Brick (SRMK) represent a significant innovation in refractory materials, specifically designed for high-demand industrial environments. These bricks are crafted from partially fused magnesia chrome sand, offering a unique blend of durability and performance.

 

Composition and Structure:

The core mineral composition of Semi-Rebonded Magnesia Chrome Brick (SRMK) includes periclase, spinel, and a trace amount of silicate. This composition results in an opacified particle structure, with well-developed spinel within the periclase crystals. The matrix features a metasomatic turbidite structure, leading to direct bonding between periclase-periclase or periclase-spinel. The silicate phase remains isolated, enhancing the brick’s overall structural integrity.

 

Manufacturing Process:


Semi-Rebonded Magnesia Chrome Brick (SRMK) are produced using a conventional process that incorporates fused magnesia chrome materials as particles. This is supplemented with chrome ore and magnesia or sintered synthetic magnesia chrome materials as a fine powder, ensuring a high-quality final product.

 

Performance Advantages:

These bricks are characterized by their density, low porosity, and high-temperature strength. Notably, SRMK bricks offer better thermal shock resistance than both Direct Bonded Magnesia Chrome Bricks (DMK) and Rebounded Magnesia Chrome Bricks (RMK). This makes them highly resistant to slag erosion, a critical factor in many industrial processes.

 

Applications:

Semi-Rebonded Magnesia Chrome Brick (SRMK) are ideal for use in vulnerable parts of electric steelmaking furnaces, RH and DH vacuum degassing devices, and secondary refining slag lines such as VOD, LF, ASEA-SKF, and AOD. They are also effective in the tuyere area of copper converters, the burning zone of cement rotary kilns, and regenerators of glass furnaces. Their versatility and resilience make them a preferred choice in these demanding environments.

 

Cost-Effectiveness:

An added advantage of Semi-Rebonded Magnesia Chrome Brick (SRMK) is their cost-effectiveness compared to RMK bricks of equivalent composition. Their superior thermal shock resistance allows them to replace RMK bricks in certain applications, offering a more economical solution without compromising on quality or performance.

 

Conclusion:

Semi-Rebonded Magnesia Chrome Brick (SRMK) stand out as a cost-effective, high-performance option in the realm of refractory materials. Their unique composition, manufacturing process, and application versatility make them a go-to choice for industries requiring robust and reliable furnace linings.

Semi-Rebonded Magnesia Chrome Brick

After Impregnation process treatment, the physical and chemical properties of Semi-Rebonded Magnesia-chrome Brick (SRMK) are greatly improved. The porosity will be reduced by 7%, the bulk density will increase by 0.05g/cm3, and the Cold Crushing Strength will increase by about 30MPa. This is an additional procedure.

Direct Bonded Magnesia Chrome Brick 08 www.osymen.com 1 Semi-Rebonded Magnesia Chrome Brick impregnation process treatment

%E4%B8%8B%E8%BD%BD We can produce Harbinson Walker International standard Semi-Rebonded Magnesia Chrome Brick

rhimagnesita We can produce RHI Magnesita standard Semi-Rebonded Magnesia Chrome Brick

Refrateknik1 We can produce Refratechnik standard Semi-Rebonded Magnesia Chrome Brick

OSYMEN

MgO

SiO2

Cr2O3

A.P

B.D

C.C.S

R.U.L

T.S.R

1100 oC Water

%

%

%

%

g/cm3

MPa

(Ta)oC

Cycles

SRMK-12A-DA

72.0

1.2

12-14

14.0

3.20

80

>1700

5

SRMK-12A

72.0

1.2

12-14

16.0

3.15

50

>1700

5

SRMK-12B

70.0

1.7

12-14

16.0

3.10

45

>1700

6

SRMK-16A-DA

62.0

1.2

16-18

14.0

3.20

80

>1700

5

SRMK-16A

62.0

1.2

16-18

16.0

3.15

50

>1700

5

SRMK-16B

60.0

1.7

16-18

17.0

3.12

45

>1700

6

SRMK-20A-DA

58.0

1.2

20-22

14.0

3.25

75

>1700

5

SRMK-20A

58.0

1.2

20-22

16.0

3.18

45

>1700

5

SRMK-20B

55.0

1.7

20-22

16.0

3.15

40

>1700

6

SRMK-22-DA

55.0

1.5

22-24

14.0

3.25

75

>1700

5

SRMK-22

55.0

1.5

22-24

16.0

3.18

45

>1700

5

SRMK-24-DA

53.0

1.5

24-26

14.0

3.25

75

>1700

5

SRMK-24

53.0

1.5

24-26

16.0

3.20

45

>1700

5

SRMK-26-DA

50.0

1.5

26-28

14.0

3.25

75

>1700

5

SRMK-26

50.0

1.5

26-28

16.0

3.20

45

>1700

5

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

Last updated: 2024-01-03
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