首页>
外国专利>
Sepn. of non:ferrous metals from zinc ore tailings - by selective sulphation and leaching, leaving an iron rich material used as pigment or for iron prodn.
Sepn. of non:ferrous metals from zinc ore tailings - by selective sulphation and leaching, leaving an iron rich material used as pigment or for iron prodn.
展开▼
机译：九月锌矿尾矿中的有色金属进行选择性硫酸化和浸提，剩下的富含铁的材料可用作颜料或铁制品。
展开▼
页面导航
摘要
著录项
相似文献
摘要
Recovery of nonferrous metals from goethite-rich residues derived from wet processing of Zn ores is carried out by (a) treating the residue with a sulphating agent at 500-750 (pref.550-650) deg.C and (b) leaching the resulting sulphates from the residue. The sulphatinq agent can be H2SO4 or a SO3-contg. gas, e.g. produced by decompsn. of H2SO4 or a sulphate or derived from a contact process plant. The SO3-contg. gas can be enriched by injecting H2SO4. The treatment selectively removes Zn, Cu, In and Cd, leaving a Fe-rich material suitable for use as a pigment or an iron ore (FL).
展开▼
