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1.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：US5380354A
公开(公告)日：1995-01-10
申请号：US237986
申请日：1994-05-04
摘要： A process for recovering zinc and iron from zinc- and iron-containing sulphidic material, which also contains lead and silver, in which the sulphidic material is leached under oxidizing conditions in a two stage countercurrent pressure leach to produce a zinc-containing solution from which zinc can be recovered by conventional means such as electrowinning, followed by a reducing leach to produce a lead- and silver-bearing product containing substantially all of the lead and a substantial portion of the silver present in the zinc-containing sulphidic materials, and a high strength iron bearing solution having the iron in the ferrous state from which substantially pure, saleable or environmentally acceptable iron residue in the form of hematite which contains the majority of the soluble iron present in the zinc-containing sulphidic materials is produced.
摘要翻译： 还含有铅和银的含锌和铁的硫化物材料中的锌和铁的回收方法，其中硫化物质在氧化条件下在两级逆流压力浸出中浸出以产生含锌溶液， 锌可以通过常规方法如电解提取回收，然后还原浸出以产生含锌和含银的产品，其含有基本上所有的铅和大部分存在于含锌硫化物材料中的银，以及 产生铁含量高的含铁溶液，其中含有铁含量大的纯铁，可销售或环境可接受的赤铁矿形式的铁残留物，其含有存在于含锌硫化物材料中的大部分可溶性铁。
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公开(公告)号：US5403571A
公开(公告)日：1995-04-04
申请号：US700149
申请日：1991-04-04
CPC分类号： C01B17/0232 , C01G13/00
摘要： A process for removing mercury or other metal impurities from elemental sulphur contaminated therewith includes mixing such elemental sulphur in a molten state with an aqueous sulphide solution or an aqueous solution of sufficiently high pH which reacts with elemental sulphur and forms a sulphide solution to cause extraction of mercury or other metal contaminants from the elemental sulphur into the aqueous sulphide solutions, and separating the aqueous sulphide solution containing mercury or other metal contaminants from the molten elemental sulphur to provide an elemental sulphur product substantially free from mercury and other metal contaminants.
摘要翻译： PCT No.PCT / CA90 / 00187 Sec。 371日期：1991年4月9日 102（e）日期1991年4月9日PCT Filed 1990年6月5日PCT公布。 WO90 / 15021 PCT出版物 日期1990年12月13日。一种从被污染的元素硫中除去汞或其他金属杂质的方法包括将熔融状态的这种元素硫与硫化氢水溶液或足够高pH的水溶液混合，其与元素硫反应并形成 一种硫化物溶液，用于将汞或其他金属污染物从元素硫提取到硫化氢水溶液中，以及将含有汞或其它金属污染物的硫化氢水溶液与熔融元素硫分离，以提供基本上不含汞的元素硫产物， 其他金属污染物。
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公开(公告)号：US5711929A
公开(公告)日：1998-01-27
申请号：US416013
申请日：1995-04-03
IPC分类号： C01B17/02
CPC分类号： C01B17/0232
摘要： A process for removing mercury from elemental sulphur contaminated therewith by liquid-liquid contact by mixing of the contaminated elemental sulphur in a molten state with an aqueous solution containing sulphide and polysulphide anions for extraction of the mercury contaminant from the elemental sulphur into the aqueous sulphide solution, and separating the aqueous sulphide solution containing mercury contaminant from the molten elemental sulphur to provide an elemental sulphur product substantially free from mercury.
摘要翻译： 通过将熔融状态的被污染的元素硫与含硫化物和多硫化物阴离子的水溶液混合从而从元素硫中提取汞污染物进入硫化氢水溶液中，通过液 - 液接触将污染的元素硫从汞中除去的方法 ，并将含有汞污染物的硫酸水溶液与熔融元素硫分离，以提供基本上不含汞的元素硫产物。
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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：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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公开(公告)号：US3933973A
公开(公告)日：1976-01-20
申请号：US406979
申请日：1973-10-16
摘要： A method is disclosed for leaching finely divided lead sulphide bearing material to convert contained lead values to soluble lead acetate with concurrent conversion of sulphur values associated with the lead sulphide to an elemental state. The method involves forming a slurry consisting of the material dispersed in an aqueous medium containing free acetate ions and having a pH below 5.1. The slurry is reacted at a temperature of 60.degree. to 120.degree.C. with a free oxygen-bearing gas under a partial pressure of oxygen of 20 to 60 p.s.i. in order to convert lead sulphide to soluble lead acetate with concurrent production of insoluble elemental sulphur.
摘要翻译： 公开了一种用于浸出细碎的含硫化铅的材料以将包含的铅值转化为可溶性乙酸铅的方法，同时将与硫化铅相关的硫值转化为元素状态。 该方法包括形成由分散在含有游离乙酸根离子并且pH低于5.1的含水介质中的材料组成的浆料。 浆料在60至120℃的温度下与游离含氧气体在20至60p.s.i的氧气分压下反应。 以便将硫化铅转化为可溶性乙酸铅，同时生产不溶性元素硫。
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8.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：US4272490A
公开(公告)日：1981-06-09
申请号：US920027
申请日：1978-06-28
申请人： Verner B. Sefton , Ian M. Masters
发明人： Verner B. Sefton , Ian M. Masters
CPC分类号： C22B60/0234 , C22B23/043 , C22B23/0461 , Y02P10/212
摘要： A process for the recovery of uranium values from uranium-bearing material by sulphuric acid leaching when the material also contains siliceous matter which is at least partly soluble in sulphuric acid. The process comprises leaching the material with sulphuric acid in an aqueous slurry under oxidizing conditions at a temperature within the range of from about 65.degree. C. to about 200.degree. C. and at elevated pressure, with sulphuric acid being present in a quantity only slightly in excess of the amount required to dissolve the uranium and any other element whose dissolution is desired, to produce an insoluble residue containing siliceous matter and a leach solution containing dissolved values of uranium and any other desired element.
摘要翻译： 当材料还含有至少部分溶于硫酸的硅质物质时，通过硫酸浸出从含铀材料中回收铀值的方法。 该方法包括在氧化条件下在约65℃至约200℃的温度和高压下用硫酸在含水浆料中浸出材料，硫酸的存在量仅为略 超过溶解铀和任何其他需要溶解的其它元素所需的量，以产生含有硅质物质的不溶性残余物和含有溶解的铀和任何其它所需元素的浸出溶液。
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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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