METHOD OF SELECTIVE SOFTENING AND DISINTEGRATION OF MATERIAL CONTAINING FERROMAGNETIC COMPONENTS Russian patent published in 2012 - IPC B02C19/18 B03C1/23 

FIELD: process engineering.

SUBSTANCE: invention may be used in preparation of ores and industrial wastes for concentration and other types of processing. Proposed methods comprises processing material containing ferromagnetic components by magnetic field pulses. Material lump is loaded in vertical coil while coil winding is connected to electric current pulse source to generate magnetic field pulses to pull magnetic lumps inside coil for them to collide. Method includes combining, in time and space, the effects of mechanical strains generated by collisions and effects of magnetism (inductive, magnetistrictive, magnetothermal, Villary, Eistein-de-Haas) that enhance probability of crack formation on boundaries of ferromagnetic and nonmagnetic components and selectivity of softening and disintegration in magnetic-and-mechanical processing at the following ratio: l_k/n+Δ=v_ft+gt²/2 where l_k is coil length, n is number of pulses processing ore column with length l_k, Δ is distance between device to feed ore in coil and coil top, v_f is initial rate of raw stock particles fed into coil, g is gravity, t is time ore particles PASS from feeder to coil bottom (Δ+1_k).

EFFECT: higher quality of processing.

1 dwg