A kind of ball mill steel ball and steel forging matching grinding ball selection method

Abstract

The invention relates to a ball mill steel ball and steel forging match grinding and filling ball selection method. By adopting the ball mill steel ball and steel forging match grinding and filling ball selection method, the problems that in an ore grinding process, the proportion of particles passing through a 200-400-mesh sieve is too small, and the proportion of the particles passing through a -400-mesh sieve is too large so as to influence flotation indexes and cause poor flotation effect, low production efficiency and unstable product quality can be effectively solved. The method comprises the following steps: simultaneously putting water and ores into a ball mill; filling an ore grinding medium in a cylinder, wherein the ore grinding medium consists of the following components in percentage by weight: 70-80% of steel balls and 20-30% of steel forgings; filling the steel forgings and the steel balls every 24 hours under the conditions that the total filling quantity of the steel forgings and the steel balls is the quantity of 0.15-0.25kg of the ore grinding medium consumed in per ton of ores, and the ore blanking rate is 30t / h; and selecting ball forgings for one time when running for every 7000 hours. The ball mill steel ball and steel forging match grinding and filling ball selection method disclosed by the invention is significant in effect, ensures that the proportion of the particles of which the raw ore pulp particle size can pass through a 200-400-mesh sieve can reach more than 17% and the proportion of the particles of which the raw ore pulp particle size can pass through a -400-mesh sieve is less than 73%, is beneficial for controlling the flotation process indexes and tailing settlement, is stable in product quality, and can be used for prolonging the ball selection time by 2000 hours.

Description

technical field [0001] The invention relates to a method for ball mill steel balls and steel forgings to be matched and ground for supplementary ball selection. Background technique [0002] Because the flotation raw ore used in the mineral processing system is bauxite waste residue, which is mainly purchased in bulk in the surrounding areas, it has been placed for a long time, the weathering is serious, the particle size and hardness fluctuate greatly, and the aluminum-silicon ratio is low, generally 2.0-3.0. The treatment of bauxite waste slag usually adopts a three-stage crushing and grinding system of two-stage jaw crushing, high-pressure roller mill dry crushing, and ball mill fine grinding. The bauxite waste slag with an aluminum-silicon ratio of 2.0-3.0 is crushed by a high-pressure roller mill. Finally, the proportion of its particle size less than 3mm can reach about 70%, among which -200 mesh (-200 mesh refers to particles smaller than 200 mesh, 200 mesh means that...

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a ball mill steel ball and forging steel ball matching method for supplementary grinding, which can effectively solve the problem of excessive powder particle ratio passing through the 200-400 mesh sieve during the grinding process. The proportion of particles smaller than 400 mesh sieve is too large, which affects the flotation index, poor flotation effect, low production efficiency, and unstable product quality.