Chrome Corundum Brick Color
The raw materials used in the chrome corundum series are a solid solution which is synthesized by a certain ratio of alumina and chrome oxide and melted at a high temperature. The use of special refractory production process to produce refractory bricks can improve and improve the intrinsic quality of the refractory products and improve the high temperature performance of the products. The chrome corundum brick is initially formed in green color. After high temperature sintering, oxidation reaction occurs, and the color after the reaction changes according to the content of Cr2O3. If the Cr2O3 content is about 3%, the color is light reddish red, and the purple color is around 8%. More than 20% of the color will appear black and red, the higher the chromium content, the more black the color.
The chrome corundum brick has a load softening temperature of 1700℃ and a refractoriness of 1790℃, which are superior to high purity corundum products. No matter how much the amount is added, it will not lower the fire resistance of the material, but will improve the fire resistance of the material.
Strength of Chrome Corundum
The normal temperature compressive strength of high purity corundum bricks is generally 70~100Mpa. The normal temperature compressive strength of high performance chrome corundum bricks is generally >150Mpa, and its strength is obviously higher than that of corundum bricks.
Thermal Shock Stability of Chrome Corundum
Adding Cr2o3 to corundum, when the content of Cr2o3 is 10%~66%, the thermal shock stability of the material decreases with the increase of Cr2o3 content. The chrome corundum brick with low content has better thermal shock stability than chrome corundum with high Cr2O3 content. Brick, Zhengzhou Rongsheng refractory production of high-performance chrome corundum brick Cr2O3 content between 12% and 20%, its thermal shock stability is improved compared with corundum brick: especially the addition of a small amount of phase change additives to produce chrome corundum brick The thermal shock stability is better.
Application Range of Chrome Corundum
The use effect of chrome corundum brick produced by Zhengzhou Rongsheng Kiln Refractory Company in the steel industry is more than doubled compared with the service life of corundum material, such as ladle ventilated brick: in the non-ferrous smelting industry, the wear resistance of chrome corundum brick and erosion resistance is significantly better than bricks: in the carbon black industry, chrome corundum bricks are twice as long as the corundum bricks used under the same conditions.
