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Mg-Cr Brick

Magnesia-Chrome Series

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Mg-Cr Brick

Introduction

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Ceramic bonded magnesia-chrome brick is made from sintered magnesia and chromite through accurate proportioning. With very good high temperature performance and excellent thermal shock resistance, the product is widely used in furnace of steel and non-ferrous industries.

Direct-bonded magnesia-chrome brick, using high purity magnesia and top grade chromite as raw materials, are shaped under high pressure and fired at high temperature. With very good performance under high temperature and strong resistance to the erosion of metallurgical slag, the product is widely used in the main areas of the furnaces of steel and non-ferrous industries.

Semi-rebonded magnesia-chrome brick and fused rebonded magnesia-chrome brick, partially or totally using fused magnesia and fused magnesia-chrome clinker as raw materials, is produced through the processes of accurate proportioning, pressing, firing under ultra-high temperature. Characterized with high ratio of direct bonding, good graining bonding, volume stability and excellent strength and under high temperature, the products are widely used in secondary refining equipments such as RH, AOD, VOD and non-ferrous smelters, blowing furnaces, refining furnaces.

Specification

Analysis
Ceramic bonded magnesia-chrome bricksCeramic bonded magnesia-chrome bricks
QMGe-8AQMGe-8BQMGe-12AQMGe-12BQZHMGe-8AQZHMGe-12AQZHMGe-16A
MgO% ≥
65
60
60
5574
66
60
Cr2O3 8
8
12
128
12
16
SiO2
-
-
-
-2.0
2.0
2.0
AP% ≤

20

20
202018
18
18
CCS ≥

35

30
35
3040
35
35

Refractoriness under

load of 0.2MPa   ≥

1600
1550
1600
15801660
1660
1660

 

 

 

Analysis
Semi-rebonded magnesia-chrome bricks Fused rebonded magnesia-chrome bricks
QBDMGe-16AQBDMGe-18AQBDMGe-20AQDMGe-16AQDMGe-18AQDMGe-20AQZHMGe-26A
MgO% ≥
60
58
55
60
60
5852
Cr2O3 16
18
20
16
18
2024
SiO2
1.5

1.5

1.5
1.2
1.2
1.21.2
AP% ≤

17

17
1716
16
1616
CCS ≥

40

40
40
45
45
4545

Refractoriness under

load of 0.2MPa   ≥

1750
1750
1750
1750175017501750



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