Performance characteristics of magnesia-chrome bricks and their application in high-temperature indu
2025-04-27 09:46:13
Magnesia-chrome bricks are alkaline refractory materials made of sintered magnesia sand and chrome ore as the main raw materials, through high-temperature sintering or electric casting. Due to its excellent high-temperature resistance, thermal shock resistance, corrosion resistance and other properties, it is widely used in high-temperature industrial fields such as metallurgy, cement, glass, and electricity, and has become one of the indispensable materials for high-temperature furnace linings.
In terms of performance, magnesia-chrome bricks have the following significant characteristics: First, they have strong high-temperature resistance, and their refractoriness is usually above 1800℃, which can withstand the high-temperature working environment in equipment such as smelting furnaces or rotary kilns. Secondly, they have excellent thermal shock resistance, especially directly combined with magnesia-chrome bricks, which can maintain structural stability in an environment with frequent alternations of hot and cold, and extend the life of the furnace lining. In addition, magnesia-chrome bricks have strong corrosion resistance to slag, molten metal, etc., and are especially suitable for furnace linings in high-corrosion areas in the metallurgical industry.
In terms of application in high-temperature industries, magnesia-chrome bricks are widely used in key parts such as steelmaking converters, electric arc furnaces, and refining furnaces in the steel industry; in the cement industry, they are particularly suitable for use in high-temperature corrosion-intensive areas such as rotary kiln firing zones; in glass kilns, they are also often used in furnace bottoms or wall parts that contact molten glass. In addition, with the development of environmentally friendly chromium-free refractory materials, some magnesia-chrome bricks have also begun to optimize towards low chromium or chromium-free to reduce the impact of hexavalent chromium on the environment.
In short, magnesia-chrome bricks have become one of the important refractory materials in high-temperature industries due to their comprehensive performance. In the future, with the development of industrial technology and the improvement of environmental protection requirements, the performance of magnesia-chrome bricks will continue to be optimized, helping high-temperature equipment to operate more efficiently, safely, and greenly.