Patent ID: 7494692

Claim:
An antioxidation coating for steel, characterized that said coating is a slurry prepared by mixing magnesian mineral, layered silicate, metallurgical solid waste, aluminum powder, organic thickener and inorganic binder as primary raw materials with water, and comprises following chemical components on the basis of the coating in dry powder: Al 2 O 3 15~32 wt % SiO 2 20~40 wt % MgO 10~35 wt % B 2 O 3 0~20 wt % P 2 O 5 0~10 wt % CaO 4~15 wt % Fe 2 O 3 2~20 wt % C 1~5 wt % Na 2 O 0~10 wt % the density of the coating ranges from 1,100˜1,500 kg/m 3 .