METHOD FOR OBTAINING GOLD FROM FINE ROCK

摘要

FIELD: metallurgy.SUBSTANCE: method involves treatment of rock with a sodium cyanide solution with formation of dispersion of rock particles with gold compound in the form of Na[Au(CN)], which is dissolved in it. Then, particles are removed from the dispersion so that clarified solution of gold compound is obtained. Clarified solution contacts a solid zinc source so that their products are obtained as a result of reactions of ionic exchange and replacement in the form of water solution of zinc compound Na[Zn(CN)] and solid phase of gold. Solid phase of gold is separated and processed so that metal gold is obtained. As zinc source there used are particles of zinc hydroxide consisting of a composite sorbent dispersed in water, consisting of cellulose fibres with particles of zinc hydroxide, which are immobilised with them at their chemical deposition. Solid phase of gold is extracted in the form of its hydroxide.EFFECT: accelerating and simplifying the process.4 cl, 3 ex