FIELD: mining.
SUBSTANCE: method involves crushing and pulverisation of crude ore, its selective flocculation, deslurrying and magnetic separation of deslurrying sands so that iron-ore concentrate is obtained, at pulverisation of crude ore, it is processed with a disperser containing silicate salts, the consumption of which is 0.2-0.6 kg per tonne of pulverised ore; with that, as silicate salts, there used is 1.0-1.5% of weight fraction of salt of heavy metals in the form of chrome, copper or zinc, and selective flocculation of particles of pulverised ore is made in liquid medium of deslurrying device at pH=7.0-10.5.
EFFECT: effective separation of mineral component of iron-ore raw material so that high-quality concentrate and final benefication tailings are obtained.
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