Magnetic separation-centrifuge separation technology of micro-fine particle dissemination magnet-hematite mixed ore

A centrifuge and mixed ore technology, applied in the directions of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problem of increasing the amount of flotation reagents and beneficiation costs, increasing the processing capacity of flotation operations, and the large consumption of flotation reagents. and other problems, to achieve the effect of reducing the link of dispensing, reducing the amount of ore feeding in the operation, and being easy to operate.

CN104888947AActive Publication Date: 2015-09-09ANSTEEL GRP MINING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-09-09

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Abstract

The invention relates to a magnetic separation-centrifuge separation technology of micro-fine particle dissemination magnet-hematite mixed ore. The magnetic separation-centrifuge separation technology is characterized by adopting a grading operating system of wet-type semi-autogenous grinding, stage grinding, phase flux weakening-strong magnetism, and strong magnetism concentrate-centrifuge; the magnetic separation-centrifuge separation technology has the following advantages: the wet-type autogenous grinding process is adopted, so that the crushing operation is reduced; the stage grinding and stage magnetic separation method is adopted, the single magnetic separation method is adopted to recycle vignite reaching monomer separation in advance so as to throw and collect iron mineral reaching monomer separation, the effects of cost decreasing and benefit increasing are realized, and the mineral reaching monomer separation is prevented from entering next operation; the centrifuge is adopted for grading, the technological processes are short, and the equipment is simple and easy to operate, does not pollute the environment, saves energy and reduces consumption.
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Description

technical field

[0001] The invention belongs to the technical field of iron ore beneficiation, in particular to a kind of fine-grain embedded magnetic-red mixed ore

[0002] magnetic separation-centrifuge separation process. Background technique

[0003] In recent years, the domestic separation of lean iron ore has successfully adopted "continuous grinding, weak magnetic-strong magnetic-negative reverse flotation", "stage grinding, weak magnetic-strong magnetic-anion reverse flotation", "stage Grinding, coarse and fine classification, medium ore regrinding, heavy-magnetic-reverse flotation", "continuous grinding, coarse and fine classification, medium ore regrinding, heavy-magnetic-reverse flotation", "three-stage grinding, stage weak The magnetic-intensity magnetic-reverse flotation process has been promoted and applied in Anshan Iron and Steel Co., Ltd. and other domestic processing plants.

[0004] These processes adopt three-stage crushing and screening of the raw ore,...

Examples

Embodiment Construction

[0025] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0026] like figure 2 shown , the magnetic separation-centrifuge separation process of a kind of fine-grain embedded magnetic-red mixed ore of the present invention is characterized in that: adopt wet semi-self-grinding, stage grinding, stage weak magnetic-strong magnetic, strong magnetic

[0027] Fine-centrifuge sorting operation system, the specific steps are as follows:

[0028] a) Raw ore with a grade of 31% to 33%, a magnetic iron content of 40 to 60%, and a particle size of less than 300mm is fed into the wet semi-autogenous grinding-screening operation through the ore storage bin, and the -3mm product under the screen is fed into a closed circuit The grinding and grading system performs a stage of grinding and grading treatment, and the products on the screen return to the wet semi-autogenous grinding for regrinding;

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