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1.发明授权Process for the recovery of silver from a residue essentially free of elemental sulphur 失效从基本上不含元素硫的残余物中回收银的方法
公开(公告)号：US4632701A
公开(公告)日：1986-12-30
申请号：US707710
申请日：1985-03-04
CPC分类号： C22B11/04 , C22B7/006 , Y02P10/234
摘要： A process for the recovery of silver from a residue essentially free of elemental sulphur obtained by acidic pressure oxidation leaching or iron-containing sulphidic material which comprises forming a slurry of the residue with lime at a temperature of at least about 80.degree. C. to raise the pH of the slurry to at least about 9. The slurry is maintained at this temperature for from about 0.5 to about 4 hours, and the resultant slurry is subjected to silver recovery treatment.
摘要翻译： 一种从基本上不含有由酸性压力氧化浸出或含铁硫化物材料获得的元素硫的残余物中回收银的方法，该方法包括在至少约80℃的温度下用石灰形成浆料，以提高 将浆料的pH调节至至少约9.浆液在该温度下保持约0.5至约4小时，并将所得浆液进行银回收处理。
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2.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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3.发明授权Recovery of gold from refractory auriferous iron-containing sulphidic concentrates 失效从难熔含铁含铁硫化物浓缩物中回收金
公开(公告)号：US4571263A
公开(公告)日：1986-02-18
申请号：US707922
申请日：1985-03-04
CPC分类号： C22B11/04
摘要： A process for recovering gold from refractory auriferous iron-containing concentrate includes feeding the concentrate as an aqueous slurry to an acidic pretreatment step and treating the concentrate in the acidic pretreatment step with aqueous sulphuric acid solution to decompose carbonate and other acid consuming gangue compounds. The treated 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 about 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 first repulping step to produce a repulped oxidized slurry with a pulp density in the range of from about 5 to about 15% solids by weight, the repulped oxidized slurry is subjected to a liquid-solids separation step to produce an acid and iron containing solution and oxidized separated solids, a portion of the acid and iron containing solution is recycled to the acidic pretreatment step, and gold is recovered from the oxidized separated solids.
摘要翻译： 从难熔含含铁的浓缩浓缩物中回收金的方法包括将浓缩物作为含水浆料进料至酸性预处理步骤，并在酸性预处理步骤中用硫酸水溶液处理浓缩物以分解碳酸盐和其它消耗酸的ang石化合物。 处理过的浆料在压力氧化步骤中在约135℃至约250℃的温度下在加压氧化气氛下氧化，同时保持约5至约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。 在第一再制浆步骤中将水加入到氧化浆料中，以产生浆料密度在约5至约15重量％固体重量范围内的再浆化的氧化浆料，重新制浆的氧化浆料经受液 - 固分离步骤 以产生含酸和铁的溶液和氧化的分离的固体，一部分含酸和铁的溶液被循环到酸性预处理步骤中，从氧化的分离的固体中回收金。
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公开(公告)号：US4405566A
公开(公告)日：1983-09-20
申请号：US192929
申请日：1980-10-01
CPC分类号： C01G39/003 , C01G43/00 , C22B3/0032 , C22B3/24 , C22B60/026 , C22B60/0278 , Y02P10/234
摘要： A process for recovering uranium values from a sulphate solution containing dissolved uranium and molybdenum and with a pH not exceeding about 5.5, includes reacting the solution with ammonia at a pH in the range of from about 8 to about 10, without the solution existing for any significant time at a pH of around 7, with resultant precipitation of uranium values relatively uncontaminated by molybdenum. The uranium containing precipitate is separated from the remaining solution while maintaining the pH of the remaining solution within the same range.
摘要翻译： 从含有溶解铀和钼并且pH不超过约5.5的硫酸盐溶液中回收铀值的方法包括使溶液与氨在约8至约10的范围内反应，而不存在任何溶液 在pH值约为7的时间内有显着的时间，使得铀价值的沉淀相对未被钼污染。 将含铀的沉淀物与剩余的溶液分离，同时将剩余溶液的pH保持在相同的范围内。
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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。
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6.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：US4157912A
公开(公告)日：1979-06-12
申请号：US933372
申请日：1978-08-14
申请人： Donald R. Weir , Godefridus M. Swinkels , Ernest G. Parker , Eva A. Vosahlo , Roman M. Genik-Sas-Berezowsky
发明人： Donald R. Weir , Godefridus M. Swinkels , Ernest G. Parker , Eva A. Vosahlo , Roman M. Genik-Sas-Berezowsky
IPC分类号： C22B19/00 , C01G3/10 , C01G3/12 , C22B3/00 , C22B3/08 , C22B15/00 , C22B19/20 , C22B15/12 , C22B19/22
CPC分类号： C22B3/08 , C22B15/0071 , C22B15/0089 , C22B15/0093 , C22B19/22 , Y02P10/234 , Y02P10/236
摘要： A process for treating thermally activated metal sulfides containing copper, iron and zinc for separate recovery of zinc as zinc sulfide in which the metal sulfides are subjected to a two-stage countercurrent acid leach for the formation of copper sulfide containing acid leach residue and ferrous sulfate solution. The second-stage acid leach is performed in two steps; the first step is operated at a relatively high pulp density and high acid concentration for iron and zinc extraction, the resulting slurry diluted, and the second step is operated at a relatively low pulp density and low acid concentration for dissolution of precipitated ferrous sulfate and precipitation of any dissolved copper values by H.sub.2 S. The diluent solution for the slurry from the second-stage first step preferably is generated sulfuric acid solution from a jarosite precipitation and iron and zinc-containing solution from a subsequent activation leach. Zinc in solution from the acid leach and activation leach is precipitated as zinc sulfide in substantially pure form.
摘要翻译： 一种用于处理含有铜，铁和锌的热活化金属硫化物的方法，用于单独回收锌作为硫化锌，其中金属硫化物经受两级逆流酸浸，用于形成含硫化铜的酸浸渣和硫酸亚铁 解。 第二阶段酸浸分两步进行; 第一步以较高的纸浆密度和较高的酸浓度进行铁和锌的萃取，所得浆料被稀释，第二步以相对低的纸浆密度和低的酸浓度运行，用于溶解沉淀的硫酸亚铁和沉淀 的任何溶解的铜值由H2S。 来自第二阶段第一步骤的浆料的稀释溶液优选地是从黄钾铁矾沉淀物产生硫酸溶液，并从随后的活化浸出产生含铁和锌的溶液。 来自酸浸和活化浸出的溶液中的锌以基本上纯的形式作为硫化锌沉淀。
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8.发明授权Process for separately recovering gold and silver from solution by carbon adsorption 失效通过碳吸附从溶液中分别回收金和银的工艺
公开(公告)号：US4606766A
公开(公告)日：1986-08-19
申请号：US707993
申请日：1985-03-04
CPC分类号： C01G7/003 , C01G5/003 , C22B3/24 , Y02P10/234
摘要： A process for separately recovering gold and silver from a solution containing dissolved gold and silver by carbon adsorption which comprises passing the solution sequentially through a series of carbon adsorption stages and passing carbon sequentially through the series countercurrent to the solution to cause gold and silver to be loaded onto the carbon. A portion of the loaded carbon is removed partway along the series, and silver is recovered from the removed portion of the loaded carbon. Loaded carbon is removed from the beginning of the series, and gold is recovered from the carbon removed from the beginning of the series. Carbon from which gold and silver have been removed is returned to the end of the series for re-use.
摘要翻译： 一种通过碳吸附从含有溶解金和银的溶液中分别回收金和银的方法，其中包括使溶液依次通过一系列碳吸附阶段，并使碳顺序地通过与溶液逆流的系列，使金和银成为 加载到碳上。 负载碳的一部分沿着该系列中途被去除，并且从装载的碳的去除部分回收银。 从系列的开始移除负载的碳，并从从系列的开始去除的碳中回收金。 金和银已经被去除的碳回到系列的末端重新使用。
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公开(公告)号：US4222999A
公开(公告)日：1980-09-16
申请号：US933214
申请日：1978-08-14
CPC分类号： C01G3/10 , Y10S204/13
摘要： A process for purifying copper sulfate solution by converting contained hexavalent selenium to tetravalent selenium which is amenable to removal from solution by heating and maintaining the solution at a temperature in the range of about 135.degree. to 220.degree. C. under a non-oxidizing atmosphere in the presence of bivalent iron. The converted selenium is removed from the solution either by co-precipitation with ferrous iron oxidized and hydrolyzed to ferric oxide at a temperature in the range of 135.degree. to 220.degree. C. and under an oxygen pressure of about 140 to 450 kPa or by cementation with a metal powder at a temperature in the range of about 25.degree. to 85.degree. C. at about ambient pressure under a non-oxidizing atmosphere.
摘要翻译： 通过将含有的六价硒转化为四价硒来净化硫酸铜溶液的方法，其适于在非氧化性气氛下加热并将溶液保持在约135℃至220℃的温度范围内从溶液中除去 二价铁的存在。 通过在135℃至220℃的温度和约140至450kPa的氧气压力下或通过胶结剂氧化并水解成氧化铁的亚铁进行共沉淀从溶液中除去转化的硒。 在大约环境压力下在非氧化气氛下在约25℃至85℃的温度范围内的金属粉末。
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公开(公告)号：US4193970A
公开(公告)日：1980-03-18
申请号：US933215
申请日：1978-08-14
CPC分类号： C22B3/44 , C01G49/009 , C01P2006/80 , Y02P10/234
摘要： A process for precipitation of iron as a jarosite compound from sulfate solution in which said solution fed sequentially through a plurality of reaction zones for oxidation and hydrolysis of ferrous sulfate in the presence of alkali-metal or ammonium ions for jarosite precipitation and simultaneous generation of sulfuric acid is subjected to a "reverse temperature profile", i.e., higher temperature in the last reaction zone than in the first reaction zone, by injection of steam to the last reaction zone.
摘要翻译： 一种从硫酸盐溶液中析出铁作为黄钾铁矾合成物的方法，其中所述溶液依次通过多个反应区，在碱金属或铵离子存在下进行氧化和水解硫酸亚铁，用于黄钾铁矾沉淀和同时产生硫酸 通过将蒸汽注入到最后的反应区，使酸经受“反向温度分布”，即在最后反应区比在第一反应区高的温度。
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