| 摘要 |
FIELD: chemistry.SUBSTANCE: method of producing copper phosphate(+2)-ammonium involves preparation of a reactive aqueous solution containing copper(+2), phosphate and ammonium, precipitation of copper phosphate monohydrate(+2)-ammonium and its separation from the solution. Source of copper(+2) is used as liquid production wastes selected from a group consisting of spent solution from printed-circuit board etching, spent solution from the first printed-circuit board washing after etching, spent solution from printed-circuit board copper plating, spent solution from copper etching in mineral acids taken separately or in any combination. Reduced extraction of 99.9% copper(+2) from spent solutions.EFFECT: reduced cost of the product and extraction copper(+2) from spent solutions.12 cl, 2 dwg, 8 ex |
