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Chrome corundum refractory bricks, also known as high wear-resistant chrome corundum tapping channel bricks, are high-end products that Xinhongji Refractory has introduced to the market for many years. It is made of pure alumina Al2O3 and chromium oxide Cr2O3 as the main raw materials. Compared with pure corundum bricks, it has more functions, such as fire resistance, load softening deformation temperature, flexural strength, high-temperature creep, high-temperature volume stability, and corrosion resistance. It is mainly used for slide rails, tapping channels, and bevels of steel rolling heating furnaces, which are easy to wear in industrial furnaces. Chrome corundum brick is a refractory material used in many rolling mills with a service life of 10 to 18 months.
Application of chrome corundum brick
1. When used in the steel industry, the service life of chrome corundum bricks is more than twice that of corundum materials, such as breathable ladle bricks. ; The wear resistance and corrosion resistance of chrome corundum bricks used in the non-ferrous metal smelting industry are obviously better than other bricks.
2. For the carbon black industry, the service life of chrome corundum bricks used by Guangdong Maoming Carbon Black Factory is twice that of corundum bricks used under the same conditions. Chrome corundum bricks are used in carbon black reactors in carbon black factories, and their service life has exceeded that of corundum bricks.
3. Used in the petrochemical industry. Due to the long-term high temperature (1350-1450°C), high pressure (3.1-8.53MPa), strong recovery atmosphere (CO+H2+CH4), and high air velocity (about 10m·s-1) in the gasifier of large and medium-sized chemical fertilizer plants, the Corrosion and damage of lining refractories are serious, so the requirements for lining refractories are higher.
4. High-performance chrome corundum bricks have high density and high strength and are more resistant to air erosion and wear than corundum bricks. The introduction of Cr2O3 into corundum bricks changes the intrinsic quality of the product and significantly improves the brick’s resistance to slag corrosion and penetration. The use of chrome corundum bricks on the gasifier can further extend the service life of the gasifier.
The practice has shown that using high wear-resistant chromium corundum tapping channel bricks on the tapping channel of the rolling heating furnace for heating large-section billets has a high friction coefficient per unit area and high output value, which can not only significantly prolong the service life of the steel channel and reduce downtime, increase the output value, reduce the consumption of refractory materials and maintenance costs, and reduce the number of rapid cooling and rapid heating caused by shutdown maintenance, thereby increasing the overall life of the furnace and achieving significant economic benefits.
The related knowledge of chrome corundum brick products is introduced. I hope it helps everyone. Sun Hung Kai Refractories Co., Ltd. is an enterprise that has produced refractory materials for many years. Has rich production experience and practical basis. It has always stood at the forefront of industry development, focused on technological innovation, and continuously increased the development of new products to ensure that refractory materials can be applied to more kiln projects and bring good news to more projects.
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