发明名称 |
IMPROVEMENTS IN OR RELATING TO THE DISSOLUTION OF NOBLE METALS |
摘要 |
Reagent suitable for the dissolution of metallic gold and various methods for the application of the reagent including gold analysis, gold extraction, gold separation and the in-situ treatment of gold deposits. The reagent comprises a protic solvent containing a preferably non-reducing cation source and a source of bromine optionally in combination with a strong oxidizing agent. The protic solvent is water or a lower alkyl alcohol or a mixture thereof. The cation source preferably highly dissociates in the protic solvent and suitable cation sources include dibasic ammonium phosphate, ammonium sulphate, potassium chromate, hydrochloric acid, sodium hydroxide and potassium hydroxide. Cation sources which liberate ammonium cations are preferred. The strong oxidizing agent should be highly dissociated in the solvent and is preferably selected from the group consisting of hydrogen peroxide, sodium peroxide, potassium peroxide, sodium permanganate, potassium permanganate, potassium dichromate and ferric sulphate. |
申请公布号 |
WO8500384(A1) |
申请公布日期 |
1985.01.31 |
申请号 |
WO1984AU00128 |
申请日期 |
1984.07.09 |
申请人 |
KALOCSAI, GUY, IMRE, ZOLTAN |
发明人 |
KALOCSAI, GUY, IMRE, ZOLTAN |
分类号 |
C22B11/00;C01G7/00;C22B;C22B3/00;C22B7/00;C23F1/10;C23F1/30;G01N33/20;(IPC1-7):C22B11/04;G01N31/06 |
主分类号 |
C22B11/00 |
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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