Di(4-5 carbon branched primary alkyl) dithiophosphate promoters for the flotation of copper middlings |
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| 申请号 | US3570772D | 申请日 | 1969-08-22 | 公开(公告)号 | US3570772A | 公开(公告)日 | 1971-03-16 |
| 申请人 | AMERICAN CYANAMID CO; | 发明人 | BOOTH ROBERT BEN; HARTJENS HERMAN; FALVEY JOHN JOSEPH; | ||||
| 摘要 | In the flotation of copper sulfides; diisobutyl dithiophosphates, diisoamyl dithiophosphates and di(2-methyl-1butyl) dithiophosphates give a superior flotation rate, recovery and selectivity as compared with conventional dialkyl dithiophosphates, often permitting a coarser grind, and flotation of middlings, followed by a regrind ultimately resulting in a higher recovery of copper. | ||||||
| 权利要求 | 2. The process of claim 1 in which from about 0.01 to about 0.3 pound of diisobutyl dithiophosphate per ton of ore is used as the promoter. 3. The process of claim 2 in which at least 10 percent of the ore in the initial flotation is larger than 65 mesh, and the concentrate from the flotation step is reground, and subjected to an additional flotation step. 4. The process of claim 1 in which from about 0.01 to about 0.3 pound of diisoamyl dithiophosphate per ton of ore is used as the promoter. 5. The process of claim 4 in which at least 10 percent of the ore in the initial flotation is larger than 65 mesh, and the concentrate from the flotation step is reground, and subjected to an additional flotation step. 6. The process of claim 1 in which from about 0.01 to about 0.3 pound of di(2-methyl-1-butyl) dithiophosphate is used as the promoter. 7. The process of claim 6 in which at least 10 percent of the ore in the initial flotation is larger than 65 mesh, and the concentrate from the flotation step is reground, and subjected to an additional flotation step. |
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