Micro-fine particle mineral gravity separation device

The utility model discloses a micro-fine particle mineral gravity concentration device which comprises a gravity concentration barrel and an upward lifting assembly, a small-specific-gravity overflow port is formed in the upper end of the gravity concentration barrel, a large-specific-gravity discharge port is formed in the lower end of the gravity concentration barrel, and the upward lifting assembly comprises a plurality of upward lifting water spraying column sets distributed from top to bottom in the height direction of the gravity concentration barrel. And each upward water spraying column group comprises a plurality of upward water spraying openings which are arranged in the reselection barrel in a surrounding manner and are upward in spraying direction. Ore pulp particles entering the gravity concentration barrel are raised upwards through water flow jetted from the upward-raising water spraying opening, so that small-specific-gravity ore particles are continuously scoured by buoyancy of water and drag