| abstract |
FIELD: metallurgy. n SUBSTANCE: method consists of dry ore reduction with usage of impact centrifugal crusher till fineness 60-100% class minus 1.0-4.0 mm, leaching of crushed ore by sulfuric acid of concentration 23-40 g/l at content of solid phase 10-70% during 5-120 min, dehydration, washing, neutralisation and crushing leaching agglomerated cake till fineness 60-95% class minus 0.074 mm, flotation of copper minerals at value pH 8.0-11.0. n EFFECT: flotation effectiveness increase. n 7 cl, 2 ex |