Smashing grinding system and method

Abstract

The invention discloses a smashing grinding system and method. The system comprises a rough smashing unit, a medium fine smashing unit, an ore pregrinding unit and an ore grinding unit, wherein the rough smashing unit comprises a raw material bin, a first material feeder, a rough smashing crusher, a rough smashing ore bin, a second material feeder and a first vibrating screen which are connected in sequence; the medium fine smashing unit comprises a medium smashing front buffer bin, a third material feeder, a medium smashing crusher, a medium fine smashing ore bin, a fourth material feeder, asecond vibrating screen, a fine smashing front buffer bin, a fifth material feeder and a fine smashing crusher which are connected in sequence, and the fine smashing crusher is connected with the medium fine smashing ore bin; the ore pregrinding unit comprises a fine ore bin, a sixth material feeder, a cramming material feeding hopper, a high-pressure roller grinding machine, an ore pregrinding product buffer hopper and a third vibrating screen which are connected in sequence, the fine ore bin is connected with below-screen material outlets of the first vibrating screen and the second vibrating screen, and an above-screen material outlet of the third vibrating screen is connected with the cramming material feeding hopper; and the ore grinding unit comprises a ball grinding machine, a pumppool, a slurry pump and a swirler which are connected in sequence, and the ball grinding machine is connected with the below-screen material outlet of the third vibrating screen.

Description

technical field [0001] The invention belongs to the field of mineral processing, in particular, the invention relates to a grinding system and method. Background technique [0002] At present, in the field of mineral processing, the more common crushing and grinding processes are mainly divided into two categories, semi-autogenous grinding process and conventional crushing and grinding process. Among them, the semi-autogenous grinding process is mainly represented by the coarse crushing plus SAB / SABC process; the conventional grinding process is mainly represented by the (three / two) stage (one / two) closed-circuit process. [0003] In recent years, with the rise of high-pressure roller mill equipment, the crushing process with high-pressure roller mill as the core equipment has developed rapidly. There are mainly three-stage crushing process with high-pressure roller mill as fine crushing equipment (mostly open circuit or semi-closed circuit) and four-stage crushing process ...

AI Technical Summary

Problems solved by technology

[0005] One is the current particle size of the final crushed ore product P 80 Both are about 7mm, which does not give full play to the capabilities of the equipment to maximize energy saving;

[0006] Second, there are problems such as edge effect, closed-circuit screening, ore storage and blockage, especially for materials with mud and water, poor adaptability

The open-circuit crushing of the high-pressure roller mill will have edge effects, which will affect the product particle size of the final grinding material

Closed-circuit crushing has problems such as breaking up, blockage, and low screening efficiency,

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