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The Advantages Of Chrome Corundum Brick
In use, the scouring resistance, wear resistance, resistance to flake
structure, has been in metallurgy, glass, carbon black and the
petrochemical industry, has obtained the good using effect. Chromium
corundum brick raw material is used by the ratio of alumina and chromium
oxide according to certain proportion, go through high temperature
melting synthesis of a solid solution. Using special refractory
production technology made of refractory brick, can improve internal
quality of the product, improve the high temperature performance of
products.
1. The refractory properties of chrome corundum brick
In high purity corundum material add Cr2O3, no matter how much the
amount, not only will not reduce the fire performance of materials,can
make refractory performance of material improved.
2. The strength of chrome corundum brick
Compressive strength of high purity corundum brick at room temperature is
70 ~ 100 MPa commonly, room temperature compressive strength of high
performance chromium corundum brick ...
... is generally larger 150 MPa, the
intensity is significantly higher than the corundum brick. This is
because the products in the process of burning, between particles and
fine powder, between powder and powder are formed Al2O3 - Cr2O3 solid
solution, calcium solid solution like bridge connect fine powder with
particles together, make the strength of the material is greatly
increased.
3. Thermal shock resistance
Add Cr2O3 in corundum, when Cr2O3 content is 10% ~ 66%, material of
thermal shock resistance decreased with increasing content of Cr2O3,
namely the Cr2O3 content low chrome corundum brick, the thermal shock
stability is better than Cr2O3 content high chrome corundum brick.
4. Application
For use in the iron and steel industry, chrome corundum brick material is
above double longer than service life extended of corundum material, such
as ladle air brick, etc. For use in nonferrous smelting industry, the
wear resistance and erosion resistance of chrome corundum brick is
superior to other bricks.
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