公开(公告)号：US4278641A

公开(公告)日：1981-07-14

申请号：US112451

申请日：1980-01-16

申请人： Nikolov Y. Petrov ,  Maria M. Pavlova ,  Ognyan D. Bojkov

发明人： Nikolov Y. Petrov ,  Maria M. Pavlova ,  Ognyan D. Bojkov

IPC分类号： C22B3/26 ,  C22B3/28 ,  C22B3/36 ,  C22B34/36 ,  C22B61/00 ,  C01G41/00 ,  C01G47/00

CPC分类号： C22B34/36 ,  C22B3/0012 ,  C22B3/0032 ,  C22B3/0036 ,  C22B3/24 ,  C22B3/42 ,  C22B61/00 ,  Y02P10/234 ,  Y10S423/14

摘要： Rhenium and tungsten are recovered from a rhenium tungsten alloy by electrochemically dissolving the alloy in substantially 4 to 5 normal sodium hydroxide to form a rhenium-containing solution, solvent extracting the rhenium-containing solution with an organic heteroatom-containing solvent (e.g. pyridine) or acetone to form a second solution of the solvent containing rhenium, distilling the solvent from the second solution to form a raffinate containing rhenium, adding sulfuric acid to the raffinate to adjust the pH thereof to about 1, extracting tungsten from the raffinate with a solution of trioctylamine in kerosene containing octyl alcohol, and subjecting the raffinate containing sodium perrhenate to ion exchange to eventually convert it to ammonium perrhenate.

摘要翻译： 通过将合金电化学溶解在基本上为4至5个正常氢氧化钠中的铼钨合金中回收铼和钨，以形成含铼溶液，用含有有机杂原子的溶剂（例如吡啶）萃取含铼溶液的溶剂或 丙酮以形成含有铼的溶剂的第二溶液，从第二溶液中蒸馏出溶剂以形成含铼的萃余液，向萃余液中加入硫酸将pH调节至约1，用萃取液中的溶液 含有辛醇的煤油中的三辛胺，并将含有高铼酸钠的残液进行离子交换，最终将其转化为高铼酸铵。