Selective flocculation multi-section desliming process capable of being used for beneficiation
A selective and desliming technology, applied in the direction of solid separation, etc., to achieve great flexibility and adaptability, easy maintenance and good adaptability
Active Publication Date: 2014-07-23
HUNAN SHIZHUYUAN NON FERROUS METAL
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Problems solved by technology
Based on the characteristics of this kind of ore resources, desliming has gradually become an important operation step in the whole process plan. A reasonable desliming plan increases the feasibility of realizing the comprehensive development and utilization of related resources through ore dressing, but the thickener is used as the desliming equipment. There is no industrial practice at home and abroad for three or more stages of selective flocculation and desliming processes
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[0032] a kind of like figure 1 The selective flocculation multistage desliming process for mineral processing shown in the present invention comprises the following steps:
[0033] (1) A fine-grained iron ore whose particle size after crushing is controlled below 10 mm (assuming a production scale of 300,000 t / a, the iron ore is mainly composed of magnetite, hematite and a small amount of false hematite, and Mainly magnetite, the raw ore grade is about 28%, and the particle size of useful minerals is mostly 2μm ~ 30μm) for one-stage grinding (φ350mm cyclone group and Φ2.1×4m overflow ball mill), after one-stage grinding The discharged material is classified for one stage, the underflow after one stage of classification returns to enter the first stage of grinding again, and the overflow after one stage of classification enters the next step (the discharge fineness control of the first stage of grinding - 0.074mm accounts for 76%);
[0034](2) The overflow after the first-sta...
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Abstract
The invention discloses a selective flocculation multi-section desliming process capable of being used for beneficiation. The selective flocculation multi-section desliming process comprises the following steps of carrying out first-section ore grinding on broken ore products, carrying out first-section grading on ore grinding discharge, carrying out the first-section ore grinding again on returned graded underflow, carrying out second-section grading on graded overflow, carrying out second-section ore grinding on graded underflow, carrying out the second-section grading again on returned ore grinding discharge, carrying out first-section desliming on the graded overflow, carrying out third-section grading on deslimed underflow, carrying out third-section ore grinding on the graded underflow, carrying out third-section grading again on returned discharge materials after ore grinding, carrying out second-section desliming on the graded overflow, and carrying out third-section, fourth-section or even more than fifth-section desliming on the deslimed underflow, wherein the selective flocculation multi-section desliming process is adopted for desliming in each section, and concentrators are adopted as desliming equipment. The desliming process has the advantages of low investment cost, small land occupation, simpleness and convenience for production and maintenance, strong adaptability, good desliming effect, favorability for guaranteeing production stability and continuity, and the like.
Description
technical field [0001] The invention relates to an ore desliming process, in particular to a multi-stage desliming process which can be used for ore dressing. Background technique [0002] my country's iron ore resources are characterized by a lot of lean ore, a lot of fine-grained inlays, and complex types of ore, that is, poor, fine, and miscellaneous. With the rapid development of my country's iron and steel industry, rich iron ore and easy-to-select iron ore resources are becoming less and less, and the remaining iron ore is mainly poor, fine, miscellaneous and difficult-to-select iron ore, and the current development and utilization rate is low . In this context, it has become more and more important to fully develop the existing iron ore. In order to develop this part of ore resources, it is necessary to crush and finely grind the ore to fully realize the monomer dissociation of useful minerals. However, in the process of fine grinding, due to the differences in the ...
Claims
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IPC IPC(8): B03B1/00
Inventor 严小虎唐雪峰陈雯麦笑宇王秋林彭泽友张立刚刘兴华赵伦树李锦祥李萍吴革雄王海波
Owner HUNAN SHIZHUYUAN NON FERROUS METAL