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公开(公告)号：US4113848A
公开(公告)日：1978-09-12
申请号：US686496
申请日：1976-05-14
申请人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
发明人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
CPC分类号： C25C1/12 , C01G3/00 , C01G3/10 , C22B15/0071 , C22B15/0073 , C22B15/0089 , C22B15/0093 , Y02P10/236
摘要： Copper is processed via solutions of copper salts, both cupric and cuprous, in acidified aqueous solutions containing organic nitriles. Methods of producting solutions of cuprous salts include reduction of cupric salts and oxidation of copper and copper sulphides. Solutions of cuprous salts are thermally or electrochemically disproportionated to produce copper and solutions of cupric salts.
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公开(公告)号：US3966890A
公开(公告)日：1976-06-29
申请号：US533660
申请日：1974-12-17
申请人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
发明人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
CPC分类号： C25C1/12 , C01G3/00 , C01G3/10 , C22B15/0071 , C22B15/0073 , C22B15/0089 , C22B15/0093 , Y02P10/236
摘要： Methods of reducing aqueous solutions of cupric sulfate to cuprous solutions by using organic nitrile compositions are disclosed. The particular nitrile used is acetonitrile and the reductant is sulphur dioxide. The method has application commercially to leaching ores containing oxidised copper to obtain cuprous ion solutions. Such solutions can be treated by electrochemical or thermal disproportionation methods to obtain very pure copper.
摘要翻译： 公开了通过使用有机腈组合物将硫酸铜水溶液还原成亚铜溶液的方法。 所使用的特定腈是乙腈，还原剂是二氧化硫。 该方法具有商业上的用于浸出含有氧化铜的矿石以获得亚铜离子溶液的应用。 这种溶液可以通过电化学或热歧化方法处理，以获得非常纯的铜。
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3.发明授权
公开(公告)号：US4070183A
公开(公告)日：1978-01-24
申请号：US705100
申请日：1976-07-14
CPC分类号： C22B15/0089 , C01G3/10 , C22B15/0015 , C22B15/0071 , C22B15/0086 , C22B3/0029 , Y02P10/214 , Y02P10/234 , Y02P10/236
摘要： Cuprous sulphate solutions, suitable for thermal or electrochemical disproportionation to yield copper, are obtained by dissolving copper sulphites, such as Chevreul's salt or cuprous ammonium sulphite, in acetonitrile-water or 2 hydroxycyanoethane-water mixtures, preferably in the presence of cupric sulphate. This discovery is capable of a number of applications, one of which is the recovery of copper from chalcopyrite by the following five steps. An oxidizing roast of chalcopyrite such as to produce either cupric sulphate and/or copper oxide, leaching of cupric sulphate from the calcine, precipitation of Chevreul's salt and/or other copper sulphites with a soluble salt of sulphurous acid, including bisulphites, dissolution of the copper sulphite as cuprous sulphate, using cupric sulphate in an acetonitrile-water solution as oxidant; precipitation of pure copper by thermal disproportionation of the cuprous sulphate solution. Acetonitrile and acidic cupric sulphate solution may be recycled. Advantages over conventional processes, such as roast, leach-electrowin, or smelt, convert, electrorefine, include lower cost, lower energy consumption, sulphur removal as ammonium sulphate or gypsum, rather than as sulphur dioxide, and rapid throughput. The net reaction is: ##EQU1##
摘要翻译： 硫酸亚铜溶液适用于热或电化学歧化以产生铜，是通过将亚硫酸铜，如Chevreul盐或亚硫酸亚铵铵溶解在乙腈 - 水或2-羟基氰基乙烷 - 水混合物中，优选在硫酸铜存在下获得的。 这一发现有许多应用，其中之一是通过以下五个步骤从黄铜矿中回收铜。 黄铜矿的氧化焙烤，例如产生硫酸铜和/或氧化铜，从煅烧物中浸出硫酸铜，用可溶性亚硫酸盐（包括亚硫酸氢盐）沉淀Chevreul盐和/或其它亚硫酸铜，溶解 亚硫酸铜亚硫酸盐，使用硫酸铜在乙腈 - 水溶液中作为氧化剂; 通过硫酸亚铁溶液的热歧化沉淀纯铜。 可以回收乙腈和酸性硫酸铜溶液。 优于常规方法，如焙烧，浸出电解，熔炼，转化，电精炼，包括降低成本，降低能源消耗，硫酸铵或石膏脱硫，而不是二氧化硫，快速生产。 净反应是：
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公开(公告)号：US3961028A
公开(公告)日：1976-06-01
申请号：US533725
申请日：1974-12-17
申请人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
发明人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
CPC分类号： C25C1/12 , C01G3/00 , C01G3/10 , C22B15/0071 , C22B15/0073 , C22B15/0089 , C22B15/0093 , Y02P10/236
摘要： Method of preparing cuprous sulfate and bisulfate solutions from materials containing copper and impurities by a leaching process are disclosed. The leaching composition contains sulfuric acid, cupric ions, water and an organic nitrile. The leaching composition may be used with copper sulfide ores in particulate form. The cuprous solutions resulting from the leaching can be treated by disproportionation methods to recover pure copper.
摘要翻译： 公开了通过浸出方法从含有铜和杂质的材料制备硫酸亚铜和硫酸氢盐溶液的方法。 浸出组合物含有硫酸，铜离子，水和有机腈。 浸出组合物可以与颗粒形式的硫化铜矿石一起使用。 可以通过歧化方法处理由浸出产生的亚铜溶液来回收纯铜。
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公开(公告)号：US3937657A
公开(公告)日：1976-02-10
申请号：US533697
申请日：1974-12-17
申请人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
发明人： Alan James Parker , Winfield Earle Waghorne , Dion Ewing Giles , John Howard Sharp , Robert Alexander , David Michael Muir
CPC分类号： C25C1/12 , C01G3/00 , C01G3/10 , C22B15/0071 , C22B15/0073 , C22B15/0089 , C22B15/0093 , Y02P10/236
摘要： Copper is processed via solutions of copper salts, both cupric and cuprous, in acidified aqueous solutions containing organic nitriles. Methods of producting solutions of cuprous salts include reduction of cupric salts and oxidation of copper and copper sulphides. Solutions of cuprous salts are thermally or electrochemically disproportionated to produce copper and solutions of cupric salts.
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