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Treatment of lead concentrate for mfr. of crude lead - where sulphuric acid converts lead sulphide to lead sulphate, and copper, zinc and cadmium are removed by leaching
Treatment of lead concentrate for mfr. of crude lead - where sulphuric acid converts lead sulphide to lead sulphate, and copper, zinc and cadmium are removed by leaching
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机译：铅精矿的生产粗铅-硫酸将硫化铅转化为硫酸铅，并通过浸提去除铜，锌和镉
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摘要
The concentrate is treated with H2SO4 soln. to form an ore pulp consisting mainly of sulphate; and a material(I) contg. an iron salt is added to the ore pulp to convert the residual PbS to PnSO4 and to dissolve Cu, Zn and Cd present in the concentrate. Solid/liq. sepn. processes are then used to obtain separate pptes. of PbSO4, Cu, Zn, and Cd. Material (I) is pref. a by-prod. obtd. in the hydrometallurgical extn. of Zn as a residue; and the H2S evolved by treating the concentrate with H2SO4 is pref. used to ppte. CuS, ZnS, and CdS. Used in the mfr. of Pb by pyrometallurgy, where metals such as Cu, Zn and Cd must be removed as they reduce the yield of Pb.
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机译：用H 2 SO 4溶液处理浓缩物。形成主要由硫酸盐组成的矿浆;和材料（I）续将铁盐添加到矿浆中，将残留的PbS转化为PnSO4，并溶解精矿中存在的Cu，Zn和Cd。固体/液体sepn。然后使用这些过程获得单独的pptes。 PbSO4，Cu，Zn和Cd的含量。材料（I）是优选的。一个副产品。 t。在湿法冶金外部。残留的锌;通过用H2SO4处理精矿而析出的H2S是优选的。用来ppte。 CuS，ZnS和CdS。用于mfr。通过火法冶金法去除了铅的含量，其中必须除去诸如铜，锌和镉之类的金属，因为它们会降低铅的产率。
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