Grinding classification method

Abstract

The invention belongs to the field of ore pulp classification, relates to a grinding classification method, and concretely relates to a method for performing classification by utilizing a waterpower swirler. The to-be solved technological problem is that in order to guarantee the granularity of ore pulp subjected to grinding classification to reach product quality requirements, the grinding classification method comprises the following steps: A, inputting ore pulp needing classification operation into a first-stage swirler for classification; B, enabling classified overflow ore pulp in the first-stage swirler to enter a static-pressure box; C, enabling ore pulp in the static-pressure box to automatically flow into a second-stage swirler depending on the height difference with the second-stage swirler; D, collecting overflow ore pulp subjected to classification in the second-stage swirler, so as to obtain mineral with targeted grinded particle level; and E, regrinding underflow settled sand in the first-stage swireler and in the second-stage swireler, and then again sending into the first-stage swirler for classification. Finally, the mineral with the target particle level is obtained by utilizing the two stages of swirlers for classification.

Description

technical field [0001] The invention belongs to the field of pulp classification, and the invention relates to a grinding and classification method, in particular to a classification method using a hydrocyclone. Background technique [0002] At present, in the beneficiation industry, after a variety of metal minerals are collected, the metal minerals and gangue need to be dissociated. Therefore, in the subsequent production and processing, it is necessary to enter the ball mill and add a certain proportion of water for wet processing. Grinding to make the minerals reach a certain particle size, and then through the grading system, the products that meet the particle size of a certain quality requirement are separated and entered into the next processing procedure. In the classification process, hydrocyclones are widely used. [0003] As a kind of grading equipment, the hydrocyclone forms a grinding and grading system with a ball mill in the closed-circuit grinding process, ...

AI Technical Summary

Problems solved by technology

However, there are following main problems in adopting this grinding and grading process: 1. The classification efficiency is low, and the mass efficiency of general classification is within 25%; The nature of the raw ore changes, and the particle size needs to be adjusted, and the vibrating screen with different apertures can only be replaced; ③The system has a small processing capacity, and the system can only process a new grinding capacity of 45t / (unit.h); ④The classification system is complex and has a cyclone , dehydration magnetic separator, vibrating screen, demagnetizer and other facilities; ⑤Large consumption of spare parts and materials

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