METHOD AND DEVICE FOR IONIZATION SEPARATION OF DISPERSE MATERIALS Russian patent published in 2008 - IPC B03C7/02 

FIELD: separation of loose materials.

SUBSTANCE: device and method can be used in mining industry, building construction and chemical industry and other branches of industry for separation of disperse materials. Method of ionization separation of disperse materials is based upon feeding of disperse material to drier in ascendant flow of warmed air before crushing that material; creation of ascending air flow in parallel to warmed air flow, enriched with negative ions of oxygen; mixing of both ascending flows with flow of dispersed material; transfer of material into suspended state and charging of air-dust mixture particles with negative charge; feeding of air-dust mixture to at least two zones of action of vertical permanent electric field and separation from air-dust mixture of at least two fractions of particles of dispersed material or two materials differing in chemical composition. Method is realized by means of device for ionization separation of disperse materials. According to method, ionization chamber is provided with at least one alpha-particles source and with at least one mesh electrode connected to negative pole of constant voltage source. Air ionization chamber and gas duct of thermal generator are disposed below crushing apparatus. Any separation sep in product duct is provided with top horizontal electrode, disposed onto dielectric washer at top part of product duct, lower horizontal mesh electrode, disposed in opening of lower wall of product duct direct under bunker and separated from wall of product guide by dielectric frame. Wall, being front one onto pass of flow is mounted at angle of at least 45° to vertical axis. Opposite wall of bunker is mounted in vertical and is provided with sleeve of product duct is disposed at angle of at least 45° to vertical axis and with product duct connected with it. Sleeve at side of bunker is provided with mesh having specified size of cell connected to negative pole of constant voltage source. Product duct is provided with vertical wall disposed in plane of vertical wall of bunker. Vertical meshes are provided with electromagnet vibrators.

EFFECT: improved efficiency of operation; reduced sizes of device; improved reliability of operation.

8 cl, 4 dwg