METHOD FOR CUVETTE-HEAP LEACHING OF METALS FROM MINERAL MASS Russian patent published in 2009 - IPC C22B3/18 C22B11/08 

FIELD: technological processes; metallurgy.

SUBSTANCE: method for cuvette-heap leaching of metals is related to hydraulic metallurgy and may be used in leaching of non-ferrous, rare and precious metals ores. Method includes treatment of mineral mass with solution of leaching agent and metal extraction. Treatment of mineral mass with solution of leaching agent and metal extraction is carried out in two stages. Previously mineral mass is placed in cuvettes with hydraulically insulated walls and bottom. Then solution of initial reagent is introduced, and local portion activation of produced pulp is carried out with provision of secondary reagents. After activation pulp is exposed to fractioning with extraction of sludge-clay and sand fractions. Sand fraction is dehydrated. Productive solution and sludge-clay fraction produced as a result are exposed to sorption or electric sorption leaching. Stacks are formed from sand fraction, and material is exposed to heap leaching. Liquid phase that remained after leaching of sand and sludge-clay fraction is additionally strengthened and sent for heap leaching.

EFFECT: higher efficiency of process.

2 cl, 1 ex