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公开(公告)号：US4071421A
公开(公告)日：1978-01-31
申请号：US724423
申请日：1976-09-17
CPC分类号： C25B1/21 , C25C1/16 , Y02P10/236
摘要： A process for recovering zinc and manganese dioxide from material containing zinc and manganese compounds, includes leaching the material to provide an aqueous solution containing manganese and zinc ions, electrolyzing the solution in one electrolytic cell with conditions inhibiting the formation of manganese dioxide and favoring the deposition of zinc, and electrolyzing the solution in another electrolytic cell with conditions favoring the formation of manganese dioxide. Zinc is removed from the one electrolytic cell and manganese dioxide is removed from the other electrolytic cell.
摘要翻译： 从含有锌和锰化合物的材料中回收锌和二氧化锰的方法包括浸出该材料以提供含有锰和锌离子的水溶液，在一个电解池中电解溶液，其条件是抑制二氧化锰的形成和有利于沉积 的锌，并且在有利于形成二氧化锰的条件下将另一电解槽中的溶液电解。 锌从一个电解池中取出，二氧化锰从另一个电解池中除去。
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公开(公告)号：US4290866A
公开(公告)日：1981-09-22
申请号：US86877
申请日：1979-10-22
摘要： A process for removing manganese ions from aqueous acidic sulphate solutions containing zinc and manganese ions, without removing a substantial amount of zinc ions from solution, includes treating the solution with ozone to oxidize manganese ions to manganese dioxide, and removing the manganese dioxide from the solution.
摘要翻译： 从含有锌离子和锰离子的酸性硫酸盐水溶液中除去锰离子而不从溶液中除去大量锌离子的方法包括用臭氧处理溶液以将锰离子氧化成二氧化锰，并从溶液中除去二氧化锰 。
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3.发明授权
公开(公告)号：US4379037A
公开(公告)日：1983-04-05
申请号：US271723
申请日：1981-06-08
摘要： A process for removing manganese and chloride ions from an aqueous acidic sulphate solution containing zinc, manganese and chloride ions without removing a substantial amount of zinc ions from the solution includes adjusting the free acidity of the solution if necessary to at least about 0.1 molar. The solution is then treated with ozone to oxidize manganese ions to manganese dioxide, and the ozone treatment is continued after the manganese concentration has fallen to a low level to oxidize chloride ions to chlorine gas. The precipitated manganese dioxide is removed from the solution.
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公开(公告)号：US4505744A
公开(公告)日：1985-03-19
申请号：US508699
申请日：1983-06-28
申请人： Donald R. Weir , Ian M. Masters , Gerald L. Bolton
发明人： Donald R. Weir , Ian M. Masters , Gerald L. Bolton
CPC分类号： C25C1/16 , C22B19/22 , C22B19/26 , Y02P10/234
摘要： A process for recovering zinc from zinc-containing sulphidic material which also contains iron and lead includes leaching the material under oxidizing conditions at a temperature in the range of from about 130.degree. to about 155.degree. C. in aqueous sulphuric acid solution with a stoichiometric excess of sulphuric acid relative to the zinc content of the material of from about 50 to about 100% to produce an undissolved residue containing a major proportion of the lead and a leach solution containing a major proportion of the zinc and iron. The sulphur and lead containing residue is separated from the zinc and iron containing leach solution. Elemental sulphur is physically separated from the remaining lead-containing residue, and the remaining lead-containing residue is recovered. The zinc and iron containing leach solution is treated to recover zinc by feeding the solution to another process in which zinc-containing material is treated to recover zinc and which includes an iron-precipitation step.
摘要翻译： 从含有铁和铅的含锌硫化物中回收锌的方法包括在氧化条件下将物料在约130至约155℃的温度范围内，在硫酸水溶液中浸出，其化学计量过量 的硫酸相对于材料的锌含量为约50至约100％，以产生含有主要比例的铅的未溶解残余物和含有主要比例的锌和铁的浸出溶液。 含硫和含铅残渣与含锌和铁的浸出溶液分离。 将元素硫与剩余的含铅残渣物理分离，并回收剩余的含铅残渣。 处理含锌和铁的浸出溶液以通过将溶液进料到另一种处理含锌材料以回收锌并且包括铁沉淀步骤的方法来回收锌。
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公开(公告)号：US4510028A
公开(公告)日：1985-04-09
申请号：US508693
申请日：1983-06-28
申请人： Gerald L. Bolton , Donald R. Weir
发明人： Gerald L. Bolton , Donald R. Weir
IPC分类号： C22B19/00 , C22B20060101 , C22B19/20 , C22B19/22
CPC分类号： C22B19/22 , Y02P10/234
摘要： A process for recovering zinc from material containing zinc ferrite includes leaching the ferrite containing material together with zinc sulphide containing material in a leach step, with the relative amounts of ferrite material and zinc sulphide material being such that the zinc present as zinc ferrite is a minor proportion of the total zinc content of the ferrite material and the zinc sulphide material. The leach step is carried out in aqueous sulphuric acid solution at elevated pressure under oxidizing conditions and at a temperature above the melting point of sulphur, with the sulphuric acid to zinc molar ratio being less than about 1.2:1, to cause dissolution of a substantial amount of zinc from the ferrite material and from the sulphide material.
摘要翻译： 从含有锌铁氧体的材料中回收锌的方法包括在浸出步骤中将含铁素体的材料与含硫化锌的材料一起浸出，铁氧体材料和硫化锌材料的相对量使锌铁氧体存在的锌是次要的 铁素体材料和硫化锌材料的总锌含量的比例。 浸出步骤在硫酸水溶液中在氧化条件下和高于硫的熔点的温度下进行，硫酸与锌的摩尔比小于约1.2:1，导致大量 来自铁氧体材料和来自硫化物材料的锌的量。
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