| 摘要 |
FIELD: metallurgy of noble metals, particularly, platinum refining. SUBSTANCE: method is realized by reduction of platinum complex chlorides with forming acid with addition to reaction mixture of ammonia solution. Ammonia solution is added by portions to attain pH 6-6.5 and agitating. Reduction process is carried out with heating up to 80-90 C and agitating. Dry powder contains 100% of metal platinum. Content of platinum in molten liquid is not in excess of 2 mg/l. EFFECT: reduced expenditures for reagents and content of metal in molten liquor, simplified process of production of pure powder of metal platinum. |
