METHOD FOR PRODUCTION OF COPPER, ZINC, NICKEL AND COBALT BASIC CARBONATES AND OXIDES Russian patent published in 1995 - IPC

Abstract RU 2043301 C1

FIELD: chemical and petrochemical industries. SUBSTANCE: method for production of copper, zinc, nickel and cobalt basic carbonates and oxides includes dissolving and simultaneous oxidation of metal ions from various raw materials (metals, inactive oxides, hydroxides) at elevated temperature and preset molar ratio of metal: ammonium: carbon dioxide to produce saturated solution of ammoniates with concentration, temperature and pressure allowing their optimal thermal decomposition in intensive conditions and full volume of reactor. Process is intensified by circulation of solution and discharge of gaseous products of reaction. In so doing, liquid and gaseous reaction products are recirculated and repeatedly used in the process. Efficiency of continuous process flow exceeds that of the known method by 3-4 times and amounts to 14,000-27,000 kg/day for copper and zinc, and 7,000-14,000 kg/day for nickel and cobalt. Method provides for production of compounds of controlled composition with preset ratio of active components, high purity and dispersity. EFFECT: higher efficiency. 1 tbl

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RU 2 043 301 C1

Authors

Aksenov N.N.

Sharkina V.I.

Sobolevskij V.S.

Travin L.V.

Dates

1995-09-10Published

1991-06-25Filed