METHOD FOR DISINTEGRATION OF LUMP RAW MATERIAL Russian patent published in 2019 - IPC B02C13/06 

FIELD: disintegrators and crushing devices.

SUBSTANCE: invention relates to grinding, dispersion and mechanical activation of materials, including nanostructure materials, and can be used in mining and construction industries, in power engineering, in process plants of concentrating mills, in schemes of preparation of solid fuel for combustion and in production lines for preparation of fodders for farm animals. Novelty is in the method for disintegration of lump raw material additionally creating a pressure gradient in the gaps between rows of destructive elements (beaters) of the movable and fixed discs by initiating in said gaps air velocity, for this purpose destructive elements (beaters) are installed so that their contour in radial direction from center to periphery formed profile of two isosceles trapezoids having common small base, one of which narrows from disk center to its periphery at an angle α=(60÷70)°, and second expands at opening angle f=(15÷25)° from the small base to the periphery, wherein to reinforce the ventilation effect occurring in the gaps on the generatrix of the radial surface of the rotating disc, the ventilation blades are uniformly arranged, which are mechanically fixed to the said surface, and in grinding process on disintegrated raw material is exposed to compressed air jet from compressor, which is supplied to loading point of said raw material, wherein at the end of the disintegration process, the preliminarily ground raw material particles through the discharge hole are accelerated by the air flow to the side surface of the collecting funnel, in the process of collision with which the final disintegration is carried out. When using the claimed method productivity of 1,900 kg/h has been achieved. Average dispersion of milled fluoroanhydrite is 6 mcm. During disintegration of fluoroanhydrite by prototype method, productivity does not exceed 1,200 kg/h, and average dispersion of milled fluoroanhydrite does not decrease below 12 mcm.

EFFECT: claimed method compared to the prototype method increased productivity by 1,6 times, and dispersed nature of the raw material particles by more than 2 times.

1 cl, 3 dwg