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1.发明授权Recovery of uranium from material containing iron, arsenic and siliceous matter 失效从含铁，砷和硅质物质的材料中回收铀
公开(公告)号：US4406864A
公开(公告)日：1983-09-27
申请号：US192767
申请日：1980-10-01
CPC分类号： C22B60/0278 , C01G28/008 , C01G53/11 , C22B60/0234 , C22B60/026
摘要： A process for the recovery of uranium values from uranium-containing material which also contains iron, arsenic and siliceous matter, includes leaching the uranium-containing material in aqueous sulphuric acid solution under conditions to provide dissolved iron present in the resultant leach solution as predominantly ferrous iron rather than ferric iron and/or to provide a sulphuric acid concentration in the leach solution sufficiently high to substantially prevent the precipitation of arsenates. Uranium values are recovered from the leach solution by solvent extraction agent which has little affinity for arsenic.
摘要翻译： 还含有铁，砷和硅质物质的含铀材料回收铀值的过程包括在含硫的硫酸溶液中浸出含铀材料，以提供存在于主要为亚铁的所得浸出溶液中的溶解铁 铁而不是三价铁和/或提供浸出溶液中的硫酸浓度足够高以基本上防止砷酸盐的沉淀。 通过对砷具有很小亲和力的溶剂萃取剂从浸出溶液中回收铀值。
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公开(公告)号：US4443253A
公开(公告)日：1984-04-17
申请号：US417829
申请日：1982-09-14
申请人： Donald R. Weir , Ian M. Masters
发明人： Donald R. Weir , Ian M. Masters
IPC分类号： C22B19/00 , C01B17/027 , C01G5/00 , C01G21/00 , C22B20060101 , C22B3/00 , C22B3/04 , C22B19/20
CPC分类号： C22B19/26 , C22B19/22 , Y02P10/234
摘要： A process for recovering zinc from zinc-containing sulphidic material also containing iron and from zinc oxide containing material. Zinc-containing sulphidic material is leached under oxidizing conditions at a temperature in the range of from about 130.degree. to about 170.degree. C. in aqueous sulphuric acid solution with an initial stoichiometric excess of sulphuric acid relative to the zinc content of the sulphidic material to form a leach slurry containing dissolved zinc and iron. The leach step is continued until a substantial amount of zinc has been dissolved from the sulphidic material. Zinc oxide containing material is then added to the leach slurry to raise the pH of the slurry to a value in the range of from about 4.5 to about 5.5 to precipitate dissolved iron and form an iron-containing residue and a relatively iron-free leach solution. The residue is separated from the leach solution, and the leach solution is treated to recover zinc.
摘要翻译： 还含有铁和含氧化锌的材料的含锌硫化物材料中回收锌的方法。 含锌硫化物材料在氧化条件下在约130至约170℃的温度范围内，在硫酸水溶液中浸出，其中初始化学计量过量的硫酸相对于硫化物材料的锌含量至 形成含有溶解的锌和铁的浸出浆料。 浸出步骤持续进行，直到大量锌从硫化物质中溶解出来。 然后将含氧化锌的材料加入浸出浆料中以将浆料的pH升高至约4.5至约5.5的范围，以沉淀溶解的铁并形成含铁残渣和相对无铁的浸出溶液 。 将残余物与浸出溶液分离，并将浸出溶液处理以回收锌。
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3.发明授权
公开(公告)号：US4545963A
公开(公告)日：1985-10-08
申请号：US536013
申请日：1983-09-26
CPC分类号： C22B19/22 , B03D1/02 , B03D1/06 , C22B13/04 , Y02P10/234
摘要： A process for separately recovering zinc and lead values from zinc and lead containing sulphidic ore which also contains iron comprises subjecting ground ore to a first flotation step to float an initial lead concentrate containing zinc and produce zinc and iron containing tailings. The zinc and iron containing tailings are subjected to a second flotation step to float an initial zinc concentrate containing iron and also produce tailings. The initial zinc concentrate is subjected to a third flotation step to float a further zinc concentrate containing iron and also produce zinc and iron containing tailings. The zinc and iron containing tailings from the third flotation step and at least a lead and zinc containing portion of the initial lead concentrate are leached in a first leach step under oxidizing conditions at a temperature in the range of from about 130.degree. to about 170.degree. C. in aqueous sulphuric acid solution with a stoichiometric excess of sulphuric acid relative to the zinc content of from about 50 to about 150% so as to give a terminal acidity of from about 50 to about 80 g/L to produce a lead-containing residue and a first leach solution containing zinc and iron. The lead containing residue is separated from the first leach solution and the first leach solution is treated with the further zinc concentrate or calcine produced therefrom by roasting to dissolve zinc therefrom and precipitate a substantial amount of dissolved iron, thereby producing an iron containing residue and a second leach solution containing zinc. The iron containing residue is separated from the second leach solution, and the second leach solution is treated to recover zinc.
摘要翻译： 还含有铁和含锌硫化矿石的锌和铅值分别回收还含有铁的方法包括对地矿进行第一浮选步骤以漂浮含有锌的初始含铅浓缩物并产生含锌和铁的尾矿。 对含锌和铁的尾矿进行第二浮选步骤以漂浮含有铁的初始锌精矿并且还产生尾矿。 初始锌精矿经受第三浮选步骤以漂浮含有铁的另外的锌精矿，并且还产生含锌和铁的尾矿。 在氧化条件下，在约130℃至约170℃的温度范围内，将第一浮选步骤中含锌和铁的尾矿以及至少含铅和锌的部分初始浓缩铅浸出， 在相对于锌含量为约50至约150％的化学计量过量硫酸的硫酸水溶液中，以产生约50至约80g / L的终端酸度以产生含铅的 残渣和含锌和铁的第一浸出溶液。 含铅残渣与第一浸出溶液分离，第一浸出溶液用另外的浓缩锌或煅烧物通过焙烧处理，从而溶解锌，并沉淀出大量的溶解铁，从而产生含铁残渣和 含锌的第二浸出溶液。 将含铁残渣与第二浸出溶液分离，并处理第二浸出溶液以回收锌。
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公开(公告)号：US4832925A
公开(公告)日：1989-05-23
申请号：US514733
申请日：1983-07-18
申请人： Donald R. Weir , Ian M. Masters , Barry N. Doyle
发明人： Donald R. Weir , Ian M. Masters , Barry N. Doyle
CPC分类号： C22B11/021 , C22B13/02 , C22B19/22 , Y02P10/214 , Y02P10/234
摘要： A process for the recovery of zinc from zinc-containing sulphidic material which also contains iron and from zinc oxide containing material, at least one of the materials containing lead and/or silver values. The process includes leaching zinc-containing sulphidic material and zinc oxide containing material under pressurized oxidizing conditions at a temperature in the range of from about 130.degree. to about 170.degree. C. in aqueous sulphuric acid solution with a stoichiometric excess of sulphuric acid relative to the zinc content of the materials of from about 40 to about 100% to produce a residue containing a major proportion of lead and/or silver values and a leach solution containing a major proportion of the zinc and iron. The residue is separated from the leach solution and treated to recover lead and/or silver values. The pH of the solution is then raised to neutralize the acid in an iron removal step to cause precipitation of at least some of the dissolved iron from the leach solution as an iron compound. The precipitated iron compound is separated from the remaining leach solution, and the remaining leach solution is treated to recover zinc.
摘要翻译： 还含有铁和含氧化锌的材料的含锌硫化物材料回收锌的方法，含有铅和/或银的材料中的至少一种材料。 该方法包括在加氢氧化条件下，在约130℃至约170℃的温度范围内，在含硫化学计量过量的硫酸溶液中，将含锌硫化物材料和含氧化锌的物质相对于 材料的锌含量为约40至约100％，以产生含有主要比例的铅和/或银值的残渣和含有主要比例的锌和铁的浸出溶液。 将残余物与浸出溶液分离并处理以回收铅和/或银值。 然后在铁去除步骤中升高溶液的pH以中和酸，以使作为铁化合物的浸出溶液中的至少一些溶解的铁沉淀。 将沉淀的铁化合物与剩余的浸出溶液分离，并处理剩余的浸出溶液以回收锌。
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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：US4423007A
公开(公告)日：1983-12-27
申请号：US283318
申请日：1981-07-13
申请人： Donald R. Weir , Ian M. Masters , Manfred Neven
发明人： Donald R. Weir , Ian M. Masters , Manfred Neven
CPC分类号： C02F1/5236 , G21F9/10 , C02F1/66 , C02F1/68 , C02F2101/006 , C02F2101/20 , C02F9/00
摘要： A process for removing radium from a radium-containing aqueous sulphate solution also containing dissolved magnesium at a pH not greater than about 10 comprises treating the solution with a soluble barium salt to precipitate radium as barium radium sulphate. The pH of the solution is raised to at least about 11 to precipitate an insoluble magnesium compound which collects the barium radium sulphate precipitate, and substantially all of the precipitates are separated from the solution.
摘要翻译： 还含有不大于约10的pH的含有溶解镁的含镭射硫酸盐溶液中的镭的方法包括用可溶性钡盐处理该溶液以使镭硫酸钡沉淀。 将溶液的pH升高至至少约11以沉淀收集硫酸钡硫酸盐沉淀物的不溶性镁化合物，并将基本上所有的沉淀物与溶液分离。
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公开(公告)号：US4366128A
公开(公告)日：1982-12-28
申请号：US192766
申请日：1980-10-01
申请人： Donald R. Weir , Ian M. Masters
发明人： Donald R. Weir , Ian M. Masters
CPC分类号： C22B3/44 , C01G28/023 , C02F1/5236 , C22B30/04 , C01P2006/80 , C01P2006/82 , Y02P10/234
摘要： A process for removing arsenic from an aqueous solution containing arsenic in the form of a soluble arsenate includes adjusting the pH of the solution if necessary to at least about 10, adding a soluble barium salt to precipitate arsenic as barium arsenate, and removing the precipitated barium arsenate from the solution.
摘要翻译： 从含有可溶性砷酸盐形式的砷的水溶液中除去砷的方法包括如果需要将溶液的pH调节至少约10，加入可溶性钡盐以砷酸钡沉淀砷，并除去沉淀的钡 砷酸盐溶液。
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8.发明授权
公开(公告)号：US4610724A
公开(公告)日：1986-09-09
申请号：US707711
申请日：1985-03-04
摘要： A process for recovering gold from refractory auriferous iron containing sulphidic material which comprises treating an aqueous slurry of the material in a pressure oxidation step at a temperature in the range of from about 135.degree. to about 250.degree. C. under a total pressure of from about 500 to about 5000 kPa to oxidize sulphide sulphur to sulphate form and release gold from a refractory state. The pH of the resultant oxidized slurry is adjusted to a value suitable for cyanidation. The pH adjusted slurry is subjected to a cyanidation step in which gold is dissolved in a cyanide solution. The cyanided slurry is diluted to a pulp density in the range of from about 2 to about 10% solids by weight. The diluted slurry is subjected to a liquid-solids separation step to produce a gold containing solution and a relatively high pulp density gold-containing slurry, and gold from the gold-containing solution and from the high pulp density gold-containing slurry is separately recovered.
摘要翻译： 一种从含难熔含铁铁的硫化物质中回收金的方法，包括在压力氧化步骤中在大约135℃至大约250℃的温度范围内处理该材料的含水浆料，其总压力为约 500至约5000kPa，以将硫化物硫氧化成硫酸盐形式并将金从难熔状态释放。 将所得氧化浆料的pH调节至适于氰化的值。 对pH调节浆料进行氰化步骤，其中金溶解在氰化物溶液中。 将氰化淤浆稀释至纸浆密度在约2-约10重量％固体的范围内。 将稀释的浆液进行液体 - 固体分离步骤以产生含金溶液和相对高的纸浆密度的含金浆液，并且分别回收来自含金溶液和来自高纸浆密度的含金浆料的金 。
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公开(公告)号：US4571262A
公开(公告)日：1986-02-18
申请号：US710738
申请日：1985-03-11
CPC分类号： C01B19/004 , C01B19/007 , C01B19/008 , C22B11/04 , C22B15/0071 , C22B15/0089 , C22B23/043 , C01P2006/80 , Y02P10/236
摘要： A process for separately recovering platinum group metal values, nickel values and copper from nickel-copper-iron sulphidic matte containing platinum group metals includes leaching ground matte at atmospheric pressure in acidic nickel-copper sulphate solution at a temperature in the range of from about 75.degree. to about 105.degree. C. and at a pH below about 4 initially under oxidizing conditions and subsequently under neutral or non-oxidizing conditions to cause dissolution of nickel and iron, precipitation of copper as a copper sulphide and precipitation of dissolved platinum group metals. The copper, nickel and platinum group metal containing solids are separated from the nickel and iron containing sulphate solution and are leached in acidic nickel-copper sulphate solution under pressurized oxidizing conditions at a temperature of from about 120.degree. to about 180.degree. C. to cause dissolution of nickel and copper with minor dissolution of platinum group metals. The platinum group metal containing solids are separated from the nickel and copper containing sulphate solution, and copper is electrowon from the nickel and copper containing sulphate solution under conditions to cause cathodic deposition of copper without significant deposition of nickel. Spent nickel and copper containing electrolyte solution which also contains minor amounts of dissolved platinum group metals is recycled to the atmospheric leach and pressure leaching steps.
摘要翻译： 在含有铂族金属的镍 - 铜 - 铁硫化物锍中单独回收铂族金属值，镍值和铜的方法包括在大气压下在酸性硫酸镍 - 硫酸铜溶液中浸出磨碎的锍，温度范围为约75 温度至约105℃，pH低于约4，最初在氧化条件下，随后在中性或非氧化条件下引起镍和铁的溶解，铜作为硫化铜沉淀并沉淀溶解的铂族金属。 将含铜，镍和铂族金属的固体与含镍和铁的硫酸盐溶液分离，并在约120℃至约180℃的温度下在加压氧化条件下在酸性硫酸镍 - 硫酸盐溶液中浸出，导致 镍和铜的溶解与铂族金属的轻微溶解。 将含有铂族金属的固体与含有镍和铜的硫酸盐溶液分离，铜在含有镍和铜的硫酸盐溶液的电解下，在不会显着沉积镍的条件下引起铜的阴极沉积。 还含有少量溶解的铂族金属的含有镍和铜的电解质溶液被循环到大气浸出和压力浸出步骤中。
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10.发明授权Removal of dissolved cadmium and copper from sulphate solution with hydrogen sulfide 失效用硫化氢从硫酸盐溶液中去除溶解的镉和铜
公开(公告)号：US4405570A
公开(公告)日：1983-09-20
申请号：US417830
申请日：1982-09-14
摘要： A process for selectively removing ions of copper and/or cadmium from a sulphate solution containing nickel and/or cobalt values. The solution is treated at a temperature in the range of from about 85.degree. to about 95.degree. C. and at a pH in the range of from about 4.5 to about 5.5 with hydrogen sulphide to precipitate copper and/or cadmium ions as copper and/or cadmium sulphide, and the precipitated copper and/or cadmium sulphide is separated from the solution.
摘要翻译： 从含有镍和/或钴值的硫酸盐溶液中选择性去除铜和/或镉的离子的方法。 将溶液在约85℃至约95℃的温度和约4.5至约5.5的pH范围内与硫化氢一起处理以将铜和/或镉离子沉淀为铜和/ 或硫化镉，并且沉淀的铜和/或硫化镉与溶液分离。
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