Desliming process before grinding
A process, desliming screen technology, applied in the direction of solid separation, filter screen, grid, etc., can solve the problems of over-grinding, energy consumption, deterioration of sorting indicators, etc., to reduce the generation of slime, improve processing capacity, improve The effect of selecting technical indicators
Inactive Publication Date: 2013-09-11
ANSTEEL GRP MINING CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to provide a grinding process, the purpose is to solve the problem that the current ore directly enters the grinding operation without desliming treatment, which not only causes over-grinding, deteriorates the sorting index, but also consumes a large amount of energy, so as to realize energy saving The purpose of reducing consumption and making full use of resources
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[0014] Specific embodiments of the present invention will be described below.
[0015] The desliming process before going into the mill of the present invention is characterized in that comprising following steps:
[0016] 1) After the crushed ore is mixed with water and mixed to achieve a pulp with a concentration of 70-80% by weight, it is sent to a desliming and screening machine for desliming and screening operation. This desliming and screening operation classifies the described ore pulp into Over-screen products and under-screen slime products,
[0017] 2) Feed the product on the desliming screen into a ball mill for grinding operation, and the -200 mesh ore after the ball mill grinding operation is combined with the desliming screen under the sieve and fed into the slime Screening machine for grading operations,
[0018] 3) The sand returned from the grading operation is returned to the ball mill for grinding operation, and the overflow product is sent to the next ope...
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The invention belongs to the technical field of mineral processing processes, and particularly relates to a desliming process before grinding. The desliming process comprises the following steps of: adding water in crushed minerals for stirring and size mixing to obtain pulp with weight percentage of 70%-80%; carrying out desliming and screening operation on the pulp fed into a desliming and screening machine so as to classify the pulp into a product on a screen and a slurry product below the screen; carry out ore grinding operation on the product on the screen, which is fed into a ball grinder; combining discharged ore of -200 meshes from the ore grinding of the ball grinder with the slurry product below the desliming screen, and grading the combination in a slurry screening machine; carrying out ore grinding operation on sand returning from the grading operation in the ball grinder, and feeding an overflow product as a finished product to the next operation. The desliming process provided by the invention has the advantages that as smitham and fine silt are ejected in advance, the processing capacity of an ore grinding system is improved by more than 10%, generated slurry is reduced, and the technical indexes of grading are improved.
Description
technical field [0001] The invention belongs to the technical field of beneficiation technology, in particular to a desliming technology before grinding. Background technique [0002] Any beneficiation method is carried out according to the different properties of useful minerals and gangue minerals inside the ore. It is a prerequisite for beneficiation to fully dissociate useful minerals and gangue minerals. Therefore, the ore must be crushed and ground to achieve separation. The purpose of grinding is to fully dissociate the useful minerals and gangue minerals closely connected in the ore. However, any beneficiation method is limited by the particle size. If it is too coarse, it cannot be sorted, and if it is too fine, it is difficult to recycle. This requires that the production of fine-grained ore slime should be minimized in the process of crushing and grinding, so as to obtain good separation technical indicators. In the existing grinding process, the crushed ore i...
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Inventor 郑洁栾玲陈小艳陈正家李铁柱孙永野李庆毅袁阿丽
Owner ANSTEEL GRP MINING CO LTD