FIELD: mining industry.
SUBSTANCE: method includes removal of melted soil from portion meant for lixiviation, forming of large pit in permafrost, having slanted bottom with direction to equipment of draining productive solution, placement of lixiviated rocks in pit, feeding into lixiviated rocks of reagents solutions and draining productive solutions. Pit is made in form of trench with positive soils temperature in summer time, slants are formed and on them an anti-filter cover is placed, and trench capacity is enough for amount of lixiviated rock solids.
EFFECT: higher efficiency.
1 dwg
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