| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention refers to cleaning of mineral grains contained in pulp products at ore concentrating from undesirable sediments such as flotation reagents and sludge coating and can be implemented for mechanical activation of non-ferrous and ferrous metal ores, for coal and other minerals prior to operation of desorption and also prior to operations of selective separation of concentrates, and to cleaner flotation for production of finished concentrates. The method of cleaning mineral grains in ore suspension such as flotation reagents and sludge coating consists in tangential supply of source suspension under pressure into a working zone of the cylinder part of the case via a flow divider arranged so that counter flows collide in the zone of flow compression and deformation; this zone is limited with the interior wall of the cylinder part of the case and with curvilinear exterior part of the splitter installed on a discharge sleeve. The method is implemented by means of the device including a cylinder case with two tangential feeding sleeves arranged at various height, set off along perimeter of the cylinder approximately at 180 and communicating between them by means of the divider supplying source suspension into them; also the device includes a conic part of the case with a sand nozzle located under the cylinder part of the case. The discharge sleeve with the splitter secured thereon is made in form of exterior and interior cylinder surfaces. The interior surface of the splitter has radius r1 calculated from radius R of the cylinder part of the case. The exterior surface of the splitter limiting the zone of flow compression and deformation is made in form of ellipse with half-axes r1 and r2, where radius r2 is bigger, than r1. ^ EFFECT: increased efficiency of mineral grains cleaning from flotation reagents and sludge coating, also reduction of power consumption. ^ 6 cl, 4 dwg |
