Grinding classification method

A classification method and ore grinding technology, which is applied in the direction of the device where the axial direction of the swirl can be reversed, the swirl device, etc., can solve the problems of large consumption of spare parts and materials, low classification efficiency, and complicated classification system, and achieve classification The parameters remain stable, the slurry pressure remains stable, and the effect of high classification efficiency

Inactive Publication Date: 2015-04-08
四川安宁铁钛股份有限公司
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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 ca

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[0043] Hereinafter, the above-mentioned content of the present invention will be further described in detail through specific implementations in the form of examples to illustrate but not limit the present invention.

[0044] For the original process-related situation, take the target mineral particle size of -200 mesh which needs to account for more than 75% as an example.

[0045] The original classification process of the applicant's iron beneficiation section is: the discharge of the ball mill and the first stage of the magnetic separation concentrate are mixed and transported to the first-level cyclone through a pump. The overflow of the cyclone is sieved through a high-frequency fine sieve, and the under-sieve is regarded as qualified product Directly to the second and third stages of magnetic separation, the screened material is then subjected to dehydration and magnetic separation. The concentrate of the dehydration and magnetic separation and the sediment of the first cyclo...

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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, ...

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Application Information

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IPC IPC(8): B04C5/26B04C11/00
Inventor 罗阳勇谢泽君姚晓海江涛邓志豪余江
Owner 四川安宁铁钛股份有限公司
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