Control system and method for high-pressure roller mill closed circuit before magnetite mill

Abstract

The invention provides a control system and method for a high-pressure roller mill closed circuit before magnetite mill, and belongs to the technical field of beneficiation. The method comprises the steps that screening operation is conducted by arranging a plurality of high-pressure roller milling units and a plurality of vibration units, the high-pressure roller milling units and the vibration units are precisely controlled through a control system, oversize materials and undersize materials are obtained, the oversize material passes through a material returning belt conveyor to serve as a material returning material, and the undersize material enters a magnetic separation process. According to the control system and method for the high-pressure roller mill closed circuit, the automation degree of the whole high-pressure roller mill closed-circuit screening system is improved, manual control links are reduced, and the technical effect of precise control over the production progress is achieved under the condition that manpower resources are saved.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a closed-circuit control system and method for a high-pressure roller mill before magnetite grinding. Background technique [0002] Before the magnetite is subjected to magnetic separation, it is crushed by a high-pressure roller mill to reduce the energy consumption of the next grinding operation. Through the high-pressure roller mill-closed-circuit screening process, the particle size of the product can reach below 3mm-6mm, and then the product obtained by screening is subjected to large-size wet magnetic separation, and the final tail flick can reach 30%-40%; by increasing the tail flick rate, The technical effect of greatly reducing the energy consumption and production and operation costs of the subsequent grinding system is achieved. [0003] The control of the existing high-pressure roller mill-closed-circuit screening process includes the control of the materi...

AI Technical Summary

Problems solved by technology

[0004] 1. The operation level of the post workers affects the control level of the high pressure roller mill-closed-circuit screening process, and human operation errors often occur;

[0005] 2. Each link requires a post worker to complete the control operation, which not only greatly increases the labor cost, but also causes health damage to the post worker due to the noise and dust in the operating site environment

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