METHOD TO EXTRACT METALS FROM MILL TAILINGS

摘要

FIELD: metallurgy.SUBSTANCE: method includes leaching of useful components from open grains of processed raw materials in a cage mill, when loading raw materials and leaching reagent simultaneously in it. Raw materials processed in the cage mill are additionally exposed to vibration in the horizontal plane with its tossing. At the same time exposure to vibration is carried out within the frequency of oscillations from 30 to 1500 Hz at amplitude of horizontal oscillations from 2 to 50 mm and amplitude of vertical tosses of up to 30 mm.EFFECT: higher efficiency of metals extraction from mill tailings or off-grade raw materials due to considerable increase of leaching speed.7 dwg