METHOD OF PROCESSING TECHNOGENIC POLYMETALLIC RAW MATERIAL FOR EXTRACTION OF STRATEGIC METALS Russian patent published in 2020 - IPC C22B3/04 C22B7/00 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry, in particular, for extraction of copper and molybdenum at enrichment and processing of low-grade ores and technogenic raw materials of various origin. Technogenic raw material is milled in a mill, then agglomerated with the addition of hydrogen peroxide solution and a pile is formed with the use of tabs from a sorbent-active adsorbent – schungite, which is expanded by microwave treatment. Stack is sprayed with sulfuric acid solution. After that on the shungite are sorbed iron, copper, molybdenum and rhenium associated with it. Sorption is carried out for at least 72 hours, after which the tabs are removed, and the enriched schungite is first fed for additional milling and then for magnetic separation to obtain an iron-containing concentrate which is fed for metallurgical processing, and non-magnetic fraction, which is sent to flotation to produce foam product containing copper, molybdenum and rhenium associated with it, which are sent for metallurgical processing, and tails, which are sent to dump.

EFFECT: method increases efficiency of extraction of iron, copper, molybdenum and rhenium associated with it from technogenic polymetallic raw material at reduction of losses of valuable components, and also increases ecological safety of processing of technogenic raw material.

1 cl, 2 dwg, 2 tbl