Chrome corundum brick product is a solid solution synthesized by Zhengzhou Juda Refractory Materials using corundum raw material, which is composed of alumina and chromium oxide in a certain proportion and melted at high temperature. Using special refractory material production technology to make refractory bricks can improve and enhance the intrinsic quality of the product and improve the high-temperature performance of the product. The initial molding color of chrome corundum bricks is green. After high-temperature sintering, an oxidation reaction will occur, and the color after the reaction will change according to the Cr2O3 content of the product. If the Cr2O3 content is about 3%, the color will appear light red, and when it is about 8%, it will appear purple. If it is more than 20%, the color will appear black and red. The higher the chromium content, the more black the color will be. The price of most such products is more than 10,000 yuan/ton, so the price is relatively expensive. It is also generally used in the slag-resistant and corrosion-resistant parts of the kiln.