Method for processing copper values |
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| 申请号 | US3728430D | 申请日 | 1970-12-14 | 公开(公告)号 | US3728430A | 公开(公告)日 | 1973-04-17 |
| 申请人 | ANLIN CO; | 发明人 | CLITHEROE J; LACY F; | ||||
| 摘要 | The steps of leaching copper values from oxide ores, mixed sulfide-oxide ores, and other oxide copper bearing materials in an aqueous medium or suspension containing soluble sulfites or bisulfites and precipitating the copper as copper sulfide in an aqueous medium or suspension containing elemental sulfur and soluble sulfites or bisulfites. The precipitated copper, along with any other copper present as elemental copper or copper sulfide, is then separated by conventional methods. | ||||||
| 权利要求 | 2. The method of claim 1 wherein: said leaching and precipitating step is carried out in the presence of a Stoichiometric excess of sulfur dioxide and elemental sulfur in relation to the amount of oxide copper in said copper containing material. 3. The method of claim 1 wherein: said leaching and precipitating step includes the additional step of adding an acid selected from the group consisting of sulfuric, hydrochloric, nitric, hydroiodic, hydrofluoric, fluosilicic, phosphoric, acetic and formic to said pulp prior to completion of the precipitating portion of said leaching and precipitating step in an amount sufficient to maintain the pH thereof in the range of from about 1.0 to about 9.4. 4. The method of claim 1 wherein: said leaching and precipitating step is carried out in said pulp in the presence of a soluble chloride. |
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