Magnetic red mixed ore beneficiation process
A magnetic hematite mixed ore and process technology, applied in the direction of solid separation, chemical instruments and methods, wet separation, etc., can solve the problem of unsatisfactory separation effect of hematite, high initial investment and production and operation costs, hematite Low recovery rate and other problems, achieve good economic benefits, reduce production costs, and improve the quality of concentrate
Inactive Publication Date: 2021-05-11
魏建民
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Problems solved by technology
[0003] At present, my country's magnetic-red mixed ore is mostly separated by stage grinding, coarse and fine classification, gravity separation-strong magnetic-anion reverse flotation process. It is found in the previous experimental research that the anion reverse flotation collector currently used has a negative impact on magnetic Iron ore has a good separation effect, but the separation effect for hematite is not very ideal; in the hematite anion reverse flotation test, as the content of magnetite increases, the flotation test results will be promoted. It can improve the grade of flotation concentrate. The current technological process has a low recovery rate of hematite and will affect the concentrate grade. At the same time, the initial investment and production and operation costs of this process are relatively large.
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[0014] The present invention will be further described below in conjunction with the examples, the purpose is only to better understand the contents of the present invention, therefore, the examples given do not limit the protection scope of the present invention.
[0015] see figure 1 , a magnetic red mixed ore beneficiation process, comprising the steps of:
[0016] (1) Firstly, the crushed product is fed into the primary grinding, and the grinding product is fed into the first cyclone group for classification, and the graded grit is returned to the primary grinding to form a closed circuit, and the classified overflow is fed into the second cyclone group.
[0017] (2) The graded grit of the second cyclone group is fed into the secondary grinding, and the graded overflow is fed into the third cyclone group for coarse and fine classification.
[0018] (3) The graded sand settling of the third cyclone group is fed into the roughing spiral chute, and the graded overflow of the...
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The invention relates to a beneficiation process of magnetic red mixed ore. Including raw ore after stage grinding, coarse and fine grading, coarse and fine grading sand settling through gravity separation process to obtain heavy concentrate and tailings, coarse and fine grading overflow through weak magnetic-anion reverse flotation process to obtain floating concentrate and tailings, comprehensive concentrate by It consists of two parts: heavy essence and floating essence. Compared with the stage grinding, coarse and subdivision, gravity separation-strong magnetic-anion reverse flotation process, the present invention can increase the floating fine grade by 2 percentage points, and the comprehensive concentrate grade can be increased by 1 percentage point, and can reduce the strong magnetic machine, The infrastructure investment cost, construction area and production and operation cost of the strong magnetic pre-thickener and the pre-flotation thickener can save energy and reduce consumption; and because the amount of dry ore entering the flotation operation is reduced, the amount of flotation chemicals will also be reduced. It is beneficial to reduce environmental pollution, and can reduce production input, cost, energy and consumption with the same income, and achieve good economic and social benefits.
Description
technical field [0001] The invention relates to the technical field of ore dressing, in particular to a magnetic red mixed ore beneficiation process capable of improving the grade of concentrate. Background technique [0002] With the introduction of the "concentrated material policy" in the metallurgical industry and the needs of the market economy, the iron and steel industry has continuously improved the quality of iron concentrates. The increase in the grade of iron concentrates can increase the output of blast furnaces, reduce energy consumption, and reduce "three wastes" emissions. Therefore, under the current market economic conditions, improving and improving the product quality of iron concentrate powder can improve the market competitiveness of the product and better meet the market demand. By improving the grade of iron concentrate powder and reducing the impurity content in iron concentrate powder, it can meet the continuous improvement requirements of iron conce...
Claims
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IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 魏建民王海霞孟奥书朱立杰于忠涛曹汉青于月朋孙东挺张秋生戴伟杰
Owner 魏建民