The concept of refractories

Refractoriness of not less than 1580 ℃ in a class of inorganic non-metallic materials. Refractoriness is the refractory cone specimen in the absence of load cases, resistance to high temperature without melting down the softening temperature in Celsius. Refractory materials are widely used in metallurgy industry, chemical industry, petroleum, machinery manufacturing, silicates, power, etc., the largest amount in the metallurgical industry, accounting for 50% to 60% of total production.