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Powdery magnetic material segmented dry magnetic separation device and using method thereof

A dry magnetic separation and magnetic technology, applied in magnetic separation, chemical instruments and methods, solid separation, etc., can solve the problems of low metal recovery rate and low grade of iron concentrate, and achieve the effect of improving separation efficiency

Pending Publication Date: 2020-02-18
甘肃酒钢集团西部重工股份有限公司
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a segmented dry magnetic separation device for powdered magnetic materials to solve the problems of low iron concentrate grade and low metal recovery rate in the dry magnetic separation process of magnetic materials

Method used

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  • Powdery magnetic material segmented dry magnetic separation device and using method thereof
  • Powdery magnetic material segmented dry magnetic separation device and using method thereof
  • Powdery magnetic material segmented dry magnetic separation device and using method thereof

Examples

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Embodiment 1

[0046] Take setting 3 sorting areas 6 as an example, such as figure 1 Said, from right to left (from the loading end to the unloading end) are the first selection area, the second selection area and the third selection area.

[0047] The air outlet of the air blowing pipe 14 is arranged along the width direction of the belt 1 , parallel to the surface of the belt 1 and a low field strength area 7-12 mm away from the surface of the belt 1 . Each blowing mechanism is provided with 14-20 blowing pipes 14 .

[0048] The grille 23 adopts a carbon steel screen with an aperture of 1-2mm. The grille 23 is fixed on the frame 4; The grille 23 is articulated and its length is 15-25mm.

[0049] The materials of the magnet blocks in the magnetic system 3 are neodymium iron boron and strontium ferrite.

[0050] The adjusting valve 18 is used to adjust the air circulation amount, and the excess air is exhausted through the exhaust pipe 9 .

[0051] The magnetic field strength is stronger...

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Abstract

The invention discloses a powdery magnetic material segmented dry magnetic separation device and a using method thereof, which belong to the technical field of mineral separation engineering, and solve the problems of low iron ore concentrate grade and low metal recovery rate in a magnetic material dry magnetic separation process. Three to five separation areas are arranged above a belt side by side; each separation area is provided with an air blowing mechanism and an air draft mechanism; an air outlet of each air draft mechanism is connected with a tailings collecting device; the magnetic system is composed of a plurality of main magnetic poles; and the magnetic field intensities of the main magnetic poles are evenly distributed in the width direction of the belt and the magnetic field intensities are distributed from high to low in the length direction of the belt from the feeding end to the discharging end. The using method comprises the steps: the blast volume is adjusted to sequentially increase in the belt movement direction; the magnetic induction intensity of the main magnetic pole is adjusted to be sequentially reduced along the belt movement direction; and magnetic separation work is started. By adjusting the magnetic field intensity and the blast volume in each separation area, the separation efficiency, the separation precision and the metal recovery rate of the magnetic materials are improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, and in particular relates to a segmented dry magnetic separation device for powdery magnetic materials and a method for using the same. Background technique [0002] The weak magnetic separation process of powder magnetic materials is divided into wet weak magnetic separation and dry weak magnetic separation. [0003] Among the existing magnetic material beneficiation technologies at home and abroad, the mainstream process is wet grinding. After nearly two hundred years of development of mineral processing technology, its process technology and equipment composition are relatively mature. However, with the increasing shortage of iron ore resources and the increasing environmental protection pressure of iron and steel enterprises, its shortcomings and deficiencies have begun to become prominent, such as: the wet grinding process route is too long, the production cost and pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/22B03C1/30
CPCB03C1/22B03C1/30
Inventor 王玉成程宝军
Owner 甘肃酒钢集团西部重工股份有限公司
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