发明名称 |
REGENERATION OF DITHIOPHOSPHORUS ACID METAL EXTRACTANTS |
摘要 |
<p>The invention provides a method of regenerating dithiophosphorus extractants such as dithiophosphoric acids, dithiophosphonic acids and dithiophosphinic acids from their sulfur-sulfur bonded oxidation products contained in an organic solution. The process generates active hydrogen for regenerating the spent dithiophosphorus. extractants. Advantageously, this active hydrogen originates either from introducing a reactive metal into a liquid mixture containing the organic solution and an acidic aqueous solution to form nascent hydrogen or from using hydrogen gas in the presence of a catalyst in the organic solution. The active hydrogen generated in the process breaks thesulfur-sulfur bonds of the dithiophosphorus molecules to form the corresponding dithiophosphorus acids.</p> |
申请公布号 |
CA2206710(C) |
申请公布日期 |
2000.10.31 |
申请号 |
CA19972206710 |
申请日期 |
1997.06.02 |
申请人 |
INCO LIMITED;CYTEC TECHNOLOGY CORP. |
发明人 |
LOVE, BRUCE JOHN;RICKELTON, WILLIAM ANDREW;LOUIE, PAK KUEN;MIHAYLOV, INDJE OGNIANOV;KRAUSE, EBERHARD |
分类号 |
B01D11/04;C22B3/20;C22B3/38;C22C21/00;F28F21/08;(IPC1-7):C07F9/30;C07F9/40;C07F9/165 |
主分类号 |
B01D11/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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