Combined ordered multi-pass internal-classification screening vertical type ball mill

Abstract

The invention provides a combined ordered multi-pass internal-classification screening vertical type ball mill which is used for solving the technical problems that the existing vertical type ball mill is time-wasting and labor-wasting in repairing and dismounting the grinding mechanism, exchanging millstones of different rails and different-diameter grinding balls as well as the integral working efficiency is low due to repeated grinding of coarse-granule mineral aggregates. A grinding mechanism of the ball mill consists of a plurality of layers of connected grinding units, wherein each grinding unit comprises a millstone set, grinding balls, a unit main shaft and a unit shell, wherein at least two groove-shaped peripheral rails are arranged on opposite surfaces of a fixed millstone and a rotary millstone which are alternatively arranged along the radial direction; a plurality of channels for screening material granules are formed in the edges of the peripheral rails bearing the grinding balls along the radial direction; openings in the inner sides of the channels are gradually magnified towards the openings in the outer sides along the side walls of the channels. The combined ordered multi-pass internal-classification screening vertical type ball mill can be used for combining and assembling grinding balls with different diameters and millstones of different rails, and quickly classifying and screening material granules, so that the working noises are lowered, the ore-grinding working efficiency is greatly improved, and the energy consumption is reduced.

Description

Technical field [0001] The invention relates to engineering machinery beneficiation and grinding equipment, in particular to a combined, ordered, multi-pass internal grading and screening vertical ball mill. Background technique [0002] At present, most of the mine beneficiation and grinding equipment adopts overflow or lattice horizontal ball mills. Although the technology of horizontal ball mills is constantly updated and developed, in the grinding operation, between the grinding balls, the grinding balls and the liner or grid The ineffective wear between them is inevitable, the disordered movement of the grinding ball is inevitable, and the resulting ineffective metal wear and non-functional source consumption are inevitable. In actual work, more than 20% of the grinding balls in the horizontal mill are in the blind area to be lifted, waiting to be lifted, which wastes the energy of rotating the drum. The horizontal ball mill has high noise, high power consumption and low ef...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a combined orderly multi-pass internal grading and screening vertical ball mill, which solves the time-consuming and laborious work of maintaining and disassembling the grinding mechanism of the existing vertical ball mill, and exchanging grinding discs of different tracks and grinding balls of different diameters As well as the technical problem of low overall work efficiency caused by repeated grinding of coarse-grained mineral materials, it can combine and assemble different diameter grinding balls and different track grinding discs and quickly classify and screen material particles, reduce working noise, and greatly improve grinding work efficiency. , saving energy

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