| 摘要 |
<p>FIELD: metallurgy. ^ SUBSTANCE: invention relates to method of enrichment of persistent and base ores and extraction from its of noble metals, particularly gold, platinum, palladium. Method includes irradiation of ore by microwave frequency field, magnetic separation with formation of non-magnetic residue and magnetic and weak-magnetic fractions. Magnetic and/or weak-magnetic fractions are treated by solution of acid and/or oxidant at irradiation by microwave frequency field with receiving of suspension and passing of noble metals into solution. Additionally initial ore before irradiation by microwave frequency field subject to mechanical activation with usage of surface active agents with receiving of grinned ore with grain size 50-500 mcm. Received after treatment by solution of acid and/or oxidant at irradiation by microwave frequency field suspension is filtered with receiving of filtrate which is a concentrate of noble metals. ^ EFFECT: reduction of mass of processed ore and increasing of noble metals extraction. ^ 4 cl, 1 tbl, 6 ex</p> |
