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Refractory Structure
Oct 24, 2018

Neutral refractories are alumina, chromium oxide or carbon. Corundum products containing more than 95% alumina is a widely used high-quality refractory material. Chromium brick with chromium oxide as the main component has good corrosion resistance to steel slag, but its thermal shock resistance is poor, and the deformation temperature under high temperature load is low. Carbonaceous refractories include carbon bricks, graphite products and silicon carbide products. They have low coefficient of thermal expansion, high thermal conductivity, good thermal shock resistance, high temperature strength, resistance to acid, alkali and salt corrosion, especially weak acid and alkali, and are not wetted by metals and slags. Widely used as lining material for high temperature, and also used as autoclave for petroleum and chemical industry.

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