A grinding and grading system for ore

Abstract

The invention relates to an ore grinding and classifying system and method. The system comprises a ball mill, a slime dam, a pump and a cyclone, wherein an overflow port and a sand setting port are arranged at an outlet end of the cyclone; an outlet end of the ball mill is communicated with an inlet end of the slime dam; an outlet end of the slime dam is communicated with an inlet end of the pump; an outlet end of the pump is communicated with an inlet end of the cyclone; the sand sediment port of the cyclone is communicated with an inlet end of the ball mill; ore is ground in the wet-type overflow ball mill and then enters the slime dam, and obtained ore slurry is conveyed to the cyclone through a slurry pump; sediment sand is continuously ground in the wet-type overflow ball mill, and overflow ore pulp overflows from the overflow port. Through the ore grinding and classifying system and method disclosed by the invention, the ore ground by the ball mill occupies less than 25% in discharge granularity of 0.074mm, thus improving the classifying efficiency of the cyclone, reducing the operation pressure of the cyclone, relieving the abrasion of a pipeline and the cyclone, reducing the operation cost and improving the economic benefit. The ore grinding and classifying system has the characteristics of simple process structure and high benefit.

Description

technical field [0001] The invention relates to the field of separation of solid materials, in particular to an ore grinding and grading system and method. Background technique [0002] Grinding and grading is the core and main process in the beneficiation production process. The grading overflow particle size and sand return ratio are the key factors affecting the processing capacity and sorting index of the ball mill table. The grading equipment is an important part of the grinding system, and the classification efficiency is The height directly affects the grinding fineness. [0003] In the prior art, the primary grinding and classification of vanadium-titanium magnetite mainly adopts the ball mill-classifier production process: the classification efficiency of the classifier in this process is low, only 20-40%, resulting in a large amount of over-grinding and undergrinding of useful minerals Existence, the overflow particle size fluctuates greatly, the grade of subseque...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the primary grinding and classification of vanadium-titanium magnetite mainly adopts the ball mill-classifier production process: the classification efficiency of the classifier in this process is low, only 20-40%, resulting in a large amount of over-grinding and undergrinding of useful minerals Existence, the overflow particle size fluctuates greatly, the subsequent magnetic separation concentrate grade is low, the equipment is heavy, the floor area is large, and the infrastructure investment is large

Images