Flotation of milled kerogeniferous ores via organic solvent - esp. to obtain high yield of uranium, but also for winning molybdenum, vanadium, copper, selenium and/or germanium

摘要

Ore is milled to liberate the kerogen particles (I), which are then sepd. by flotation from ore particles (II). Particles (I) are next modified by heating, pref. at 200-1000 degrees, esp. 200-500 degrees C., for 1/2-10, esp. 2-10 hours, and treated esp. by leaching of physical sepn., to recover metals. Flotation pref. uses an organic solvent with b.pt. 60-200 degrees C., esp. straight chain or cyclic hydrocarbons, or their mixts. with b.pt. 70-150 degrees C., then adding water to obtain an upper organic phase contg. particles (I). Used esp. in efficient recovery of U from sedimentary ores, clays etc. contg. 0.5-10% kerogens.