| 摘要 |
1336759 Recovery of gold values W C HERAEUS GmbH 1 June 1971 [25 June 1970] 18451/71 Heading C1A Gold values are separated from aqueous mineral acid solutions especially those containing very low concentrations of gold, by mixing the solutions with tetrahydrofuran and extracting the so-formed Au-THF complex with a halohydrocarbon solvent e.g. methylene chloride or bromide. In addition to Au the solution may also contain one or more of Fe, Co, Ni, Cu, Al, Cr and the platinum metals. |
