A method that can improve grinding efficiency and classification efficiency

Abstract

The invention relates to a method for improving grinding efficiency and classification efficiency, and belongs to the technical field of grinding and classification. The method is a method for improving grinding efficiency and classification efficiency when a grinding mill and a hydraulic cyclone as the classification device form an entire unit to be connected into a closed circuit process. According to the method, the equipment structure is as follows: one end of a first-stage rod grinding mill is a feeding port, and the other end of the first-stage rod grinding mill is a discharge port of the first-stage grinding mill, and the discharge port of the first-stage grinding mill is connected with a feeding port of the hydraulic cyclone through a slurry pump, an underflow exit is connected with a feeding port of a second-stage rod grinding mill through a pipe to which a slurry pump is connected, and a discharge port of the second-stage grinding mill is connected with the feeding port of the hydraulic cyclone through the slurry pump. According to the invention, the grinding and classification unit uses the hydraulic cyclone classification equipment as the center, the grinding efficiency is driven by the classification efficiency through the control of feeding concentration and pressure and the diameter of an overflow pipe, so that the tremendous energy consumption generated by using the grinding mill as the center is reduced.

Description

technical field [0001] The invention relates to the technical field of ore grinding and classification, that is, how to improve the efficiency of both grinding and classification when two types of equipment, a grinding machine and a classifying device, a hydrocyclone, form an integral unit connected to form a closed-circuit process. Background technique [0002] Grinding machines are mostly grid type or overflow type grinding machines. Depending on the production capacity, there are various specifications of grinding machines for selection. For example Φ2.7×3.6m, Φ4×6.7m…etc. [0003] Hydrocyclone Depending on its production capacity and overflow fineness requirements, there are Φ100, Φ200, Φ250, Φ500, Φ660, Φ720 and Φ1000mm hydrocyclones to choose from. [0004] Grinding and classifying unit feature description After the ore is fed by the ore grinding machine, the ore is ground to a certain fineness -200 mesh% by the grinding medium steel ball or steel rod of the ore grin...

AI Technical Summary

Problems solved by technology

[0006] In the existing technology, the fineness of sand settling is very serious. The reason is that the grinding fineness is too fine, and the overflow fineness appreciation is too small. It can be seen that , the appreciation of the overflow fineness is small, which will inevitably bring about the effect of low grinding and grading efficiency

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