-
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。
-
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。
-
3.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 。
-
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。
-
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。
-
6.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。
-
公开(公告)号：US4148632A
公开(公告)日：1979-04-10
申请号：US904659
申请日：1978-05-10
申请人： Willie Seibt , Donald R. Weir
发明人： Willie Seibt , Donald R. Weir
CPC分类号： B22F9/26 , B22F9/22 , C22B23/0446 , C22B23/0461 , Y02P10/212
摘要： A process for recovering nickel from an impure nickel compound which contains a major proportion of nickel values and a minor proportion of other metal values which are relatively soluble in ammoniacal ammonium sulphate solution, and a minor proportion of nickel values and other metal values which are relatively insoluble in the solution. The impure nickel compound is treated with ammoniacal ammonium sulphate solution so that the relatively soluble nickel and other metal values are dissolved in the solution with the relatively soluble nickel values being dissolved substantially as nickel diammine sulphate, and so that the relatively insoluble nickel and other metal values form an undissolved residue. The residue is separated from most of the ammoniacal ammonium sulphate solution so as to provide a substantially residue-free solution of nickel diammine sulphate and relatively soluble other metal values on the one hand and a slurry of the residue of undissolved nickel and other metal values and the solution on the other hand. The substantially residue-free solution is subjected to a reducing operation by hydrogen gas to produce precipitation of elemental nickel powder from the residue-free solution, and the elemental nickel powder is separated from the residue-free solution to produce a first nickel powder product. The slurry is subjected to a reducing operation by hydrogen gas to produce precipitation of elemental nickel powder from the slurry, and the elemental nickel powder is separated from the slurry to produce a second nickel powder product.
摘要翻译： 从不纯的镍化合物中回收镍的方法，该方法含有大部分的镍值和较小比例的相对溶解在氨硫酸铵溶液中的其他金属值，以及较小比例的镍值和其他相对较低的金属值 不溶于溶液。 不纯的镍化合物用氨硫酸铵溶液处理，使得相对可溶的镍和其他金属值溶解在溶液中，其中相对可溶的镍值基本上被硫酸镍溶解，并且使得相对不溶的镍和其它金属 值形成未溶解的残留物。 将残余物与大部分氨硫酸铵溶液分离，以便提供基本上无残留的硫酸镍二硫酸盐溶液和相对可溶的其它金属值，以及未溶解的镍和其它金属值的残留物和 另一方面解决方案。 通过氢气对基本上无残留的溶液进行还原操作，从无残留物的溶液中析出元素镍粉末，并将元素镍粉末与无残留物溶液分离，生成第一镍粉末产物。 通过氢气对浆料进行还原操作，从浆料中析出元素镍粉末，将元素镍粉从浆料中分离出来，制成第二种镍粉末。
-
8.发明授权CO.sub.2 -induced in-situ gelation of polymeric viscosifiers for permeability contrast correction 失效二氧化碳诱导的聚合物增粘剂的原位凝胶化用于渗透性对比度校正
公开(公告)号：US4657944A
公开(公告)日：1987-04-14
申请号：US805519
申请日：1985-12-06
申请人： Donald D. Bruning , Donald R. Weir
发明人： Donald D. Bruning , Donald R. Weir
CPC分类号： C09K8/60 , C09K8/50 , E21B43/164 , Y02P90/70
摘要： A water permeability contrast correction process to improve the sweep efficiency of waterflooding which involves the sequential injection of (1) an optional aqueous preflush slug to adjust connate water salinity, (2) an aqueous thickened slug comprising a sequestered polyvalent metal cation such as aluminum citrate and a gelable polymeric viscosifier such as polyacrylamide, (3) carbon dioxide to decrease the pH of the polymer slug which triggers the delayed in-situ gelation of said thickened slug to preferentially decrease water permeability in highly permeable thief zones, and (4) an aqueous drive fluid.
摘要翻译： 一种水渗透性对比度校正方法，用于提高注水的扫掠效率，其包括顺序注入（1）任选的含水预冲洗块以调节原生水盐度，（2）包含螯合的多价金属阳离子的水性增稠块，例如柠檬酸铝 和可凝胶聚合物增粘剂如聚丙烯酰胺，（3）二氧化碳，以降低聚合物块的pH，其引发所述增稠团块的延迟原位凝胶化，以优先降低高渗透性小偷区域中的透水性，以及（4） 水驱动液。
-
公开(公告)号：US4571264A
公开(公告)日：1986-02-18
申请号：US707923
申请日：1985-03-04
IPC分类号： C22B11/00 , C22B20060101 , C22B1/10 , C22B3/00 , C22B3/04 , C22B3/08 , C22B3/20 , C22B11/08 , C22B11/04
CPC分类号： C22B3/08 , C22B11/04 , Y02P10/234
摘要： A process for recovering gold from refractory auriferous iron-containing sulphidic ore which comprises feeding ground ore as an aqueous slurry to an acidic pretreatment step. The ground ore in the acidic pretreatment step is treated with aqueous sulphuric acid solution to decompose carbonate and acid consuming gangue compounds, and subjecting the treated slurry to a first liquid-solids separation step to produce a sulphate solution and separated solids. Water is added to the separated solids in a first repulping step to form a slurry having a pulp density in the range of from about 25 to about 60% by weight solids. The first repulped slurry is oxidized in a pressure oxidation step at a temperature in the range of from about 135.degree. to about 250.degree. C. under a pressurized oxidizing atmosphere while maintaining a free acid concentration of from about 5 to 40 g/L sulphuric acid to cause dissolution of iron, formation of sulphuric acid and oxidation of substantially all oxidizable sulphide compounds to sulphate form with less than about 20% of oxidized sulphur being present as elemental sulphur during the oxidation step. Water is added to the oxidized slurry in a seocnd repulping step to produce a repulped oxidized slurry with a pulp density in the range of from about 5 to 15% by weight, and subjecting the repulped oxidized slurry to a second liquid-solids separation step to produce an acid and iron containing solution and oxidized separated solids. The acid and iron containing solution is recycled to at least one of the first and second repulping steps.
摘要翻译： 一种从难熔含铁含铁硫化矿石中回收金的方法，包括将研磨矿石作为含水浆料进料至酸性预处理步骤。 酸性预处理步骤中的研磨矿石用硫酸水溶液处理以分解碳酸盐和酸消耗的脉石化合物，并将经处理的浆料进行第一液固固体分离步骤以产生硫酸盐溶液并分离固体。 在第一再制浆步骤中将水加入到分离的固体中，以形成浆料，浆料的固体重量为约25至约60重量％。 在压力氧化步骤中，在加压氧化气氛下，在约135℃至约250℃的温度范围内，将第一个再浆化浆料氧化，同时保持约5至40g / L硫酸的游离酸浓度 导致铁的溶解，硫酸的形成和基本上所有可氧化的硫化物化合物氧化成硫酸盐形式，在氧化步骤期间以小于约20％的氧化的硫作为元素硫存在。 在再造浆步骤中将水加入到氧化浆料中，以产生纸浆密度在约5至15重量％范围内的再浆化的氧化浆料，并将再淤化的氧化浆料进行第二液 - 固分离步骤 产生含酸和铁的溶液和氧化的分离固体。 将含酸和铁的溶液再循环至第一和第二再制浆步骤中的至少一个。
-
10.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。
-
-
-
-
-
-
-
-
-
搜索结果
29 条记录 (耗时 0.022 秒)
