... (anthracite) as the main raw material, high temperature smelting in arc furnace neijing and become, the main chemical composition for AL2O3, TiO2 ... gate, smelting rare metals, special alloy, ceramics, puddling blast furnace lining (wall and pipe); Physical and chemical vessels, spark ... fibre products, which are widely used in all kinds of high temperature furnaces of furnace wall and roof, already high ...