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1. 发明授权

US4594102A Recovery of cobalt and nickel from sulphidic material 失效
标题翻译：从硫化物质中回收钴和镍
公开(公告)号：US4594102A
公开(公告)日：1986-06-10
申请号：US532331
申请日：1983-09-15
申请人： Donald R. Weir , Derek E. Kerfoot , Michael E. Chalkley
发明人： Donald R. Weir , Derek E. Kerfoot , Michael E. Chalkley
IPC分类号： C22B23/00
CPC分类号： C22B23/043 , C22B23/005 , Y02P10/212
摘要： A process for recovering cobalt and nickel values from cobalt and nickel containing sulphidic material also containing iron includes roasting the sulphidic material to produce a calcine containing water soluble cobalt and nickel sulphate, and leaching the calcine in aqueous sulphate solution under oxidizing conditions at an oxygen overpressure in the range of from about 50 kPa to about 1500 kPa and at a temperature in the range of from about 100.degree. to about 180.degree. C. to produce an iron-containing residue and a cobalt and nickel containing solution. The residue is separated from the solution, and cobalt and nickel values are recovered from the solution.
摘要翻译：还含有铁的钴和镍的硫化物质中回收钴和镍的方法包括焙烧硫化物材料以产生含有水溶性钴和硫酸镍的煅烧物，并在氧气条件下在氧气过压下将煅烧物浸在硫酸水溶液中在约50kPa至约1500kPa的范围内和在约100至约180℃的温度范围内，以产生含铁残渣和含钴和镍的溶液。残余物与溶液分离，从溶液中回收钴和镍的值。

2. 发明授权

US5348713A Recovery of metal values from zinc plant residues 失效
标题翻译：从锌植物残渣回收金属价值
公开(公告)号：US5348713A
公开(公告)日：1994-09-20
申请号：US929927
申请日：1992-08-14
申请人： Derek E. Kerfoot , Michael J. Collins , Michael E. Chalkley
发明人： Derek E. Kerfoot , Michael J. Collins , Michael E. Chalkley
IPC分类号： C22B7/00 , C22B15/00 , C22B19/30 , C22B3/08
CPC分类号： C22B13/045 , C22B11/042 , C22B15/0067 , C22B19/22 , C22B19/30 , C22B7/007 , Y02P10/214 , Y02P10/234 , Y02P10/236
摘要： A process is disclosed for recovering zinc, lead, copper and precious metals from zinc plant residue, said process comprising leaching the residue with return zinc spent electrolyte, neutralizing residual acid and reducing ferric iron in the solution by addition of zinc sulphide concentrate in the presence of a limited quantity of oxygen, flotation of the resulting slurry to separate unreacted zinc sulphide, treatment of flotation tailings with sulphur dioxide and elemental sulphur to further leach iron, zinc and impurity elements and precipitate copper, flotation of the resulting slurry to separate a copper sulphide concentrate, thickening, filtering and washing of the flotation tailings followed by addition of lime and sodium sulphide to activate lead sulphate and flotation of a lead concentrate from the residue. Iron and impurity elements are precipitated from the copper flotation tailings thickener overflow solution by addition of zinc hydroxide sludge, lime and oxygen to produce a high strength, iron free zinc sulphate solution.
摘要翻译：公开了一种用于从锌植物残渣中回收锌，铅，铜和贵金属的方法，所述方法包括用返回的锌废电解液浸出残余物，通过在存在下加入硫化锌浓缩物中和残留酸和还原三价铁，还原三价铁的有限量的氧气，所得浆料的浮选以分离未反应的硫化锌，用二氧化硫和元素硫处理浮选尾矿以进一步浸出铁，锌和杂质元素并沉淀铜，将所得浆液浮选分离铜硫化物浓缩物，增稠，过滤和洗涤浮选尾矿，然后加入石灰和硫化钠以活化硫酸铅并从残余物中浮选铅精矿。通过加入氢氧化锌污泥，石灰和氧气，从铜浮选尾矿增稠剂溢流溶液中沉淀出铁和杂质元素，产生高强度的无铁硫酸锌溶液。

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