Oxidation roasting of chrom北見ium and nickel ore. Rotary Kiln is also used for extracti有黃ng of tin and lead b亮火y chlorination volatilizati朋區on roasting, for refract個市ory plant roasting high alumina bau船厭xite and aluminum p體關lant roasting clinker, alumin司商um hydroxide and for chemical plants又員 roasting chrome ore and chrom鐵畫e ore powder.
