FIELD: concentration of minerals from ores and placers by dynamic gravity method in thin-layer flows in apparatus combining principles of concentration of standard concentrating tables and rotary tables at activation of process of neutralizing middlings. SUBSTANCE: plant for extraction of valuable minerals is provided with neutralizing system; deck plates are made in form of sectors; they are mounted at shift of area of each subsequent deck plate by half as compared with previous one; upper points of each deck plate are shifted relative to helical line over radius of each level; provision is made for adjustment of longitudinal and transversal inclination by means of heeling mechanism mounted under unloading ends of deck plates for rotation around their vertical axes; supports are mounted under upper points of deck plates; unloading ends of deck plates are provided with chutes which are rigidly engageable with them; these chutes are used for high- density fraction; chutes have varying heights; chute used for receiving high-density fraction is engageable with chute used for receiving low- density fraction and is mounted under deck plates with bottom inclined towards discharge of high-density fraction; chute used for receiving low- density fraction has bottom inclined towards discharge of low-density fraction; drive provides for synchronous rotation of distributor of pulp and water supply system for flushing deck plates around common axis. EFFECT: increased productivity; enhanced efficiency of extraction of fine fractions of minerals; enhanced ecological safety. 6 dwg
