MATERIAL REPROCESSING METHOD Russian patent published in 2000 - IPC

FIELD: grinding of ore and other raw materials. SUBSTANCE: method involves feeding raw material with water into annular grinding zone from above; providing volumetric compression of material in grinding zone; rubbing particles of material one against the other by providing forced polygradient displacement of concentric layers of material and simultaneously by exposing particles of material to the action of pulses during deformation and destruction by high-temperature liquid flow; mixing ground product with cold water and removing pulp from below. Raw material is fed into annular grinding zone upon preliminary volumetric compression in jaw crusher. Direct steam or hot air is supplied into volumetric compression zone of jaw crusher from below and material under grinding process is sprayed with water or surfactant solution supplied from above. Ground product is discharged by rotary needle-type drum. Pulsed action of high-temperature flow of liquid, overheated steam or hot air upon particles of raw material during deformation and destruction of particles may be performed simultaneously with supplying of oily substances and surfactants. Method allows quality of preparing particles of effective component to be improved. EFFECT: increased efficiency by continuous intensified grinding of material and provision for obtaining and extracting high-quality effective component. 2 cl, 3 dwg