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1.发明授权Method of separation/purification for high-purity silver chloride, and process for producing high-purity silver by the same 有权用于高纯度氯化银的分离/纯化方法及其制备高纯度银的方法公开(公告)号：US07601200B2
公开(公告)日：2009-10-13
申请号：US10558564
申请日：2004-08-31
CPC分类号： C01G5/02 , C22B3/44 , C22B11/04 , Y02P10/234
摘要： A method of efficient separation/purification for obtaining high-purity silver chloride which eliminates the necessity of a pretreatment of a refining intermediate comprising sparingly soluble silver compounds and impurity elements when silver chloride is separated from the refining intermediate and purified to a high degree and which enables the silver chloride to be used as a raw material to give high-purity silver metal without necessitating the pyrometallurgical refining or electro-refining of the silver metal. The method is characterized by comprising: a leaching step in which the refining intermediate is leached with an aqueous sulfite solution to extract silver with the solution to thereby form a silver-containing liquid resulting from the leaching and an insoluble residue; a silver chloride generation step in which the liquid resulting from the leaching is neutralized and acidified to precipitate silver chloride and thereby form the silver chloride and a mother liquor; and a silver chloride purification step in which the silver chloride is oxidized in an acidic aqueous solution by adding an oxidizing agent to dissolve and separate impurity elements and thereby form purified silver chloride and a solution containing the impurity elements.
摘要翻译： 一种用于获得高纯度氯化银的有效分离/纯化的方法，其中当将氯化银与精制中间体分离并纯化至高度时，其不需要预处理包含微溶银和杂质元素的精制中间体， 使得氯化银能够用作原料以得到高纯度银金属，而不需要对银金属的火法冶炼精炼或电精炼。 该方法的特征在于包括：浸出步骤，其中精炼中间体用亚硫酸盐水溶液浸提以用溶液萃取银，从而形成由浸出产生的含银液体和不溶性残余物; 氯化银生成步骤，其中由浸出得到的液体中和并酸化以沉淀氯化银，从而形成氯化银和母液; 以及氯化银净化步骤，其中通过添加氧化剂来溶解和分离杂质元素，从而形成纯化的氯化银和含有杂质元素的溶液，在酸性水溶液中氧化氯化银。
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2.发明申请Method of separation/purification for high-purity silver chloride, and process for producing high-purity silver by the same 有权用于高纯度氯化银的分离/纯化方法及其制备高纯度银的方法公开(公告)号：US20070022840A1
公开(公告)日：2007-02-01
申请号：US10558564
申请日：2004-08-31
CPC分类号： C01G5/02 , C22B3/44 , C22B11/04 , Y02P10/234
摘要： A method of efficient separation/purification for obtaining high-purity silver chloride which eliminates the necessity of a pretreatment of a refining intermediate comprising sparingly soluble silver compounds and impurity elements when silver chloride is separated from the refining intermediate and purified to a high degree and which enables the silver chloride to be used as a raw material to give high-purity silver metal without necessitating the pyrometallurgical refining or electro-refining of the silver metal. The method is characterized by comprising: a leaching step in which the refining intermediate is leached with an aqueous sulfite solution to extract silver with the solution to thereby form a silver-containing liquid resulting from the leaching and an insoluble residue; a silver chloride generation step in which the liquid resulting from the leaching is neutralized and acidified to precipitate silver chloride and thereby form the silver chloride and a mother liquor; and a silver chloride purification step in which the silver chloride is oxidized in an acidic aqueous solution by adding an oxidizing agent to dissolve and separate impurity elements and thereby form purified silver chloride and a solution containing the impurity elements.
摘要翻译： 一种用于获得高纯度氯化银的有效分离/纯化的方法，其中当将氯化银与精制中间体分离并纯化至高度时，其不需要预处理包含微溶银和杂质元素的精制中间体， 使得氯化银能够用作原料以得到高纯度银金属，而不需要对银金属的火法冶炼精炼或电精炼。 该方法的特征在于包括：浸出步骤，其中精炼中间体用亚硫酸盐水溶液浸提以用溶液萃取银，从而形成由浸出产生的含银液体和不溶性残余物; 氯化银生成步骤，其中由浸出得到的液体中和并酸化以沉淀氯化银，从而形成氯化银和母液; 以及氯化银净化步骤，其中通过添加氧化剂来溶解和分离杂质元素，从而形成纯化的氯化银和含有杂质元素的溶液，在酸性水溶液中氧化氯化银。
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公开(公告)号：US07291202B2
公开(公告)日：2007-11-06
申请号：US10944753
申请日：2004-09-21
CPC分类号： C22B11/04 , C22B3/0068 , C22B3/10 , C22B3/44 , Y02P10/234
摘要： A process for mutual separation of platinum group metals (PGM), wherein highly stable compounds and steps are used to efficiently remove impurity elements while preventing increase of impurity content relative to that of the PGM in the mother liquor and also preventing decomposition of a chloro complex, and palladium, platinum, iridium, ruthenium and rhodium are separated mutually in such a way that each of the separated PGM has a sufficient purity to be a commercial product.A process for mutual separation of PGM, comprising the first step for leaching a raw material containing PGM and impurity elements, second step for removing the impurity elements from the leach liquor by solvent extraction, third step for recovering palladium from the raffinate, fourth step for removing cationic impurity elements from the raffinate by solvent extraction, fifth step for recovering platinum from the raffinate by hydrolysis, sixth step for recovering ruthenium from the precipitate by leaching, and seventh step for recovering iridium by solvent extraction to prepare the stripping liquor containing iridium and raffinate containing rhodium.
摘要翻译： 铂族金属（PGM）的相互分离方法，其中使用高度稳定的化合物和步骤来有效地除去杂质元素，同时防止杂质含量相对于母液中的PGM增加，并且还防止氯络合物的分解 ，钯，铂，铱，钌和铑相互分离，使得每个分离的PGM具有足够的纯度作为商业产品。 一种用于相互分离PGM的方法，包括用于浸出含有PGM和杂质元素的原料的第一步骤;通过溶剂萃取从浸出液中除去杂质元素的第二步骤;从萃余液中回收钯的第三步骤; 通过溶剂萃取从萃余液中除去阳离子杂质元素;通过水解从萃余液回收铂的第五步骤;通过浸出从沉淀物中回收钌的第六步骤;通过溶剂萃取回收铱的第七步骤，制备含有铱的汽提液; 含有铑的残液。
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公开(公告)号：US20050066774A1
公开(公告)日：2005-03-31
申请号：US10944753
申请日：2004-09-21
CPC分类号： C22B11/04 , C22B3/0068 , C22B3/10 , C22B3/44 , Y02P10/234
摘要： A process for mutual separation of platinum group metals (PGM), wherein highly stable compounds and steps are used to efficiently remove impurity elements while preventing increase of impurity content relative to that of the PGM in the mother liquor and also preventing decomposition of a chloro complex, and palladium, platinum, iridium, ruthenium and rhodium are separated mutually in such a way that each of the separated PGM has a sufficient purity to be a commercial product. A process for mutual separation of PGM, comprising the first step for leaching a raw material containing PGM and impurity elements, second step for removing the impurity elements from the leach liquor by solvent extraction, third step for recovering palladium from the raffinate, fourth step for removing cationic impurity elements from the raffinate by solvent extraction, fifth step for recovering platinum from the raffinate by hydrolysis, sixth step for recovering ruthenium from the precipitate by leaching, and seventh step for recovering iridium by solvent extraction to prepare the stripping liquor containing iridium and raffinate containing rhodium.
摘要翻译： 铂族金属（PGM）的相互分离方法，其中使用高度稳定的化合物和步骤来有效地除去杂质元素，同时防止杂质含量相对于母液中的PGM增加，并且还防止氯络合物的分解 ，钯，铂，铱，钌和铑相互分离，使得每个分离的PGM具有足够的纯度作为商业产品。 一种用于相互分离PGM的方法，包括用于浸出含有PGM和杂质元素的原料的第一步骤;通过溶剂萃取从浸出液中除去杂质元素的第二步骤;从萃余液中回收钯的第三步骤; 通过溶剂萃取从萃余液中除去阳离子杂质元素;通过水解从萃余液回收铂的第五步骤;通过浸出从沉淀物中回收钌的第六步骤;通过溶剂萃取回收铱的第七步骤，制备含有铱的汽提液; 含有铑的残液。
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