Ore grinding grading method for improving ore grinding processing capacity

Abstract

The invention relates to mineral processing process improvement in the metallurgical industry, belongs to a process for improving grading efficiency and reducing qualified grade return quantity to increase processing capacity of a ball mill, and particularly relates to an ore grinding grading method for improving ore grinding processing capacity. The ore grinding grading method comprises firstly enabling products after ore crushing to enter the ball mill for ore grinding, sending discharged ore from the ball mill to a hydrocyclone for separation through a slurry pump, returning setting sand in the hydrocyclone to the ball mill, sending fine fraction products which are overflow of the hydrocyclone to a high-frequency vibration sieve for secondary separation through an ore division device, returning products on the sieve to enter the slurry pump, recycling to enter the hydrocyclone for separation, and conducting follow-up grading procedures on products below the sieve. The ore grinding grading method solves a problem that the existing ore grinding grading process is low in grading efficiency, low in platform efficiency of grinding machines, unstable in work and the like. The ore grinding grading method is mainly suitable to mineral separation processing of copper mine and lead and zinc metal ore.

Description

technical field [0001] The invention relates to the improvement of ore dressing process in the metallurgical mining industry, in particular to an ore grinding and grading method for improving the ore grinding processing capacity. Background technique [0002] At present, in metallurgical mining production, the beneficiation process for copper ore and lead-zinc mines is mainly divided into two stages, that is, grinding and grading process + sorting process (including roughing, beneficiation, etc.). The traditional grinding and grading process mainly adopts a closed-circuit process composed of a ball mill and a classifier or a cyclone, that is, the raw ore enters the ball mill, and the ore ground products of the ball mill enter the classifier or enter the cyclone for classification through the sand pump. The graded products are returned to the ball mill to feed the ore, and the qualified products (fine-grained grade) enter the subsequent sorting process. The shortcomings of th...

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Problems solved by technology

[0009] The purpose of this invention is to solve the problem that the traditional grinding and grading process is not easy to obtain finer grading fineness, the grading efficiency is low, the system is unstable, and the way of installing high-frequency fine sieve is incorrect, reducing the effect of the mill, increasing power consumption, etc. problem, provide a grinding classification method to improve the grinding capacity

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