公开(公告)号：US4561887A

公开(公告)日：1985-12-31

申请号：US634770

申请日：1984-07-26

申请人： Esteban M. Domic ,  Hans C. Hein

发明人： Esteban M. Domic ,  Hans C. Hein

IPC分类号： C01G3/00 ,  C01G5/00 ,  C01G7/00 ,  C01G9/00 ,  C01G11/00 ,  C01G13/00 ,  C01G19/00 ,  C01G21/00 ,  C01G45/00 ,  C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C22B3/30 ,  C22B15/00

CPC分类号： C01G5/003 ,  C01G11/003 ,  C01G13/003 ,  C01G19/003 ,  C01G21/003 ,  C01G3/003 ,  C01G45/003 ,  C01G49/0009 ,  C01G51/003 ,  C01G53/003 ,  C01G7/003 ,  C01G9/003 ,  C22B15/0021 ,  C22B15/0086 ,  C22B15/0089 ,  C22B3/0017 ,  Y02P10/234 ,  Y02P10/236

摘要： Solvent extraction is used for selective recovery of a dissolved metal such as copper from an aqueous solution of metals by means of an organic liquid, immiscible with the aqueous solution and selective for the metal of interest. The metal is extracted from the organic liquid by means of another aqueous stripping solution. The metal values are sufficiently concentrated in the aqueous stripping solution to get continuous precipitation of a metal salt in a substantially pure form. The metal salt is separated, rinsed, and dried to form an intermediate product. Preferably, the metal salt is a sulfate which is then dehydrated and thermally decomposed to form metal oxide and sulfur dioxide. The metal oxide may be also considered as an intermediate product. It is also desirable to pyrometallurgically reduce the metal oxide until pure metal powder is obtained, or it may be cast into ingots.

摘要翻译： 溶剂萃取用于通过与水溶液不混溶并且对感兴趣的金属有选择性的有机液体从金属水溶液中选择性回收溶解的金属如铜。 通过另一种水性剥离溶液从有机液体中提取金属。 将金属值充分浓缩在水性剥离溶液中以使金属盐以基本上纯的形式连续沉淀。 将金属盐分离，漂洗并干燥以形成中间产物。 优选地，金属盐是硫酸盐，然后脱水并热分解形成金属氧化物和二氧化硫。 金属氧化物也可以被认为是中间产物。 还希望火法冶金地还原金属氧化物，直到获得纯金属粉末，或者可以将其铸成锭。