发明名称 |
Method of improving precious metal yield in a Merrill-Crowe recovery process |
摘要 |
A method for improving the yield of gold and silver from a Merrill-Crowe recovery process where the presence of copper effects yield. The method involves the addition of a substoichiometric amount of ethylenediaminetetraacetic acid in combination with a phosphonate and polyacrylic copolymer scale control agent. The method also reduces zinc consumption and controls scaling in the stripping circuit.
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申请公布号 |
US5215574(A) |
申请公布日期 |
1993.06.01 |
申请号 |
US19920816997 |
申请日期 |
1992.01.03 |
申请人 |
BETZ LABORATORIES, INC. |
发明人 |
KLADDER, SUZANNE L.;MATTIOLI, TERRENCE W.;GEIGER, GARY E.;CRESSMAN, JAMES E. |
分类号 |
C22B3/44;C22B11/08 |
主分类号 |
C22B3/44 |
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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