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

Abstract

The invention provides a combined orderly and multi-pass internal grading and sieving vertical ball mill, which solves the time-consuming work of repairing and disassembling the above-mentioned grinding mechanism existing in the existing vertical ball mill, and exchanging grinding discs with different orbits and grinding balls with different diameters. The laborious and repeated grinding of coarse-grained minerals causes the technical problem of low overall work efficiency. The grinding mechanism of the ball mill is composed of multi-layer grinding units connected. A groove-shaped circumferential track with at least two passes is arranged on the opposite surfaces of the fixed grinding disc and the rotating grinding disc in the radial direction, and a plurality of channels for screening material particles are opened on the edge of the circumferential track carrying the grinding balls in the radial direction. The opening gradually increases toward the outside along the sidewall of the channel. It can combine and assemble grinding balls with different diameters and different orbital grinding discs, and quickly classify and screen material particles, reduce working noise, greatly improve grinding work efficiency, and save energy consumption.

Description

technical field [0001] The invention relates to engineering machinery ore dressing and grinding equipment, in particular to a combined orderly multi-pass internal classification and screening vertical ball mill. Background technique [0002] At present, most of the ore dressing and grinding equipment used in mines use overflow or grid horizontal ball mills. Although the technology of horizontal ball mills is constantly updated and developed, in the grinding operation, between the grinding balls, between the grinding balls and the liner or grid The ineffective wear between them is inevitable, the disordered movement of the ball grinding is inevitable, and the resulting ineffective metal wear and non-functional energy consumption are inevitable. In actual work, more than 20% of the grinding balls in the horizontal mill are in the blind area to be thrown up, waiting to be thrown up, which wastes the energy of rotating the grinding cylinder. The horizontal ball mill has high no...

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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