公开(公告)号：US4390366A

公开(公告)日：1983-06-28

申请号：US298355

申请日：1981-09-01

申请人： Richard K. Lea ,  Julian D. Edwards ,  D. Frederick Colton

发明人： Richard K. Lea ,  Julian D. Edwards ,  D. Frederick Colton

IPC分类号： C22B11/00 ,  B01D11/04 ,  C01G1/00 ,  C01G7/00 ,  C01G55/00 ,  C22B3/00 ,  C22B3/20 ,  C22B3/26 ,  C22B3/32 ,  C22B3/34 ,  C22B3/38

CPC分类号： C22B3/0031 ,  C01G55/00 ,  C01G55/001 ,  C01G7/003 ,  C22B11/04 ,  C22B3/0009 ,  C22B3/0018 ,  C22B3/0021 ,  C22B3/0024 ,  C22B3/0068 ,  Y02P10/234

摘要： A process for sequentially and selectively separating gold and platinum group metals from aqueous solutions containing them is disclosed.First, ruthenium and osmium are oxidized to their tetroxides and then removed from the solution. Then, gold is removed by solvent extraction preferably with dibutyl carbitol. Next, palladium and platinum are removed by solvent extraction with an alkyl sulphide and tributyl phosphate respectively, care being taken to reduce iridium in solution before platinum extraction to prevent it extracting with the platinum. Then the iridium is reoxidized and removed from solution. Finally, rhodium is removed from the solution.Using this process gold, platinum and palladium of saleable purity can be extracted directly without the need for further refining steps.

摘要翻译： 公开了从含有它们的水溶液中顺次和选择性地分离金和铂族金属的方法。 首先，将钌和锇氧化成四氧化物，然后从溶液中除去。 然后，通过溶剂萃取优选用二丁基卡必醇除去金。 接下来，通过用烷基硫化物和磷酸三丁酯分别溶剂萃取除去钯和铂，在铂提取之前，注意减少溶液中的铱，以防止其用铂提取。 然后将铱再次氧化并从溶液中除去。 最后，从溶液中除去铑。 使用这种方法，可以直接提取金，铂和钯的可销售纯度，而不需要进一步的精炼步骤。

公开(公告)号：US4397689A

公开(公告)日：1983-08-09

申请号：US298356

申请日：1981-09-01

申请人： Richard K. Lea ,  Julian D. Edwards ,  D. Frederick Colton

发明人： Richard K. Lea ,  Julian D. Edwards ,  D. Frederick Colton

IPC分类号： C22B11/00 ,  B01D11/04 ,  C01G1/00 ,  C01G7/00 ,  C01G55/00 ,  C22B3/00 ,  C22B3/20 ,  C22B3/26 ,  C22B3/32 ,  C22B3/34 ,  C22B3/38 ,  C01G5/00

CPC分类号： C22B3/0031 ,  C01G55/00 ,  C01G55/001 ,  C01G7/003 ,  C22B11/04 ,  C22B3/0009 ,  C22B3/0018 ,  C22B3/0021 ,  C22B3/0024 ,  C22B3/0068 ,  Y02P10/234

摘要： The process comprises the steps of leaching the concentrate with hot hydrochloric acid and chlorine gas to dissolve most of the gold, platinum and palladium, treating the residue from the leaching step with an excess of an alkaline oxidizing agent to solubilize the ruthenium, slurrying the resulting solids in water, combining the precious metal values from the slurry with the liquor from the leaching step and releaching the resulting slurry with hot hydrochloric acid and chlorine. The leach liquor which is then separated from the remaining solids is a chloride solution which contains substantially all the platinum group metals and gold present in the concentrate.