TECHNOLOGY OF EXTRACTION OF FINE FREE GOLD AND GEAR FOR ITS IMPLEMENTATION Russian patent published in 2003 - IPC

FIELD: gold metallurgy. SUBSTANCE: invention can be utilized for extraction of fine free gold both from ore deposits and placers and from beneficiation of products and tailings. Technology includes preparation of pulp from starting material, mixing of pulp and its contacting granules of agglomerate based on carbon material and carbon fluid, entrapment of gold particles by granules, separation of granules loaded with gold and pulp and extraction of gold from granules. Granules are injected with weighting material, zone of contact between pulp and granules is isolated from zone of pulp mixing. Gear for implementation of technology includes chamber, branch pipe, mixer, stator with holes, blades mounted under holes on lower surface of stator and rotating in opposition to rotation of mixer. Upper surface of stator is fitted with mesh, branch pipe is made fast to stator and has windows in its upper part equipped with mesh. Body of chamber has rectangular section. EFFECT: provision for high probability of contact between agglomerate granules and gold particles, protection of gold particles against destruction in process of mixing and increased percentage of extraction of gold from gold-carrying starting materials. 2 cl, 2 dwg, 1 tbl