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New magnetic separation column

A magnetic separation column and a new type of technology, applied in the field of mineral processing engineering, can solve the problems of inability to overcome the impact of water flow, increase in tailings grade, and reduce the recovery rate of iron ore concentrates, so as to improve the grade, improve the recovery rate, and reduce the iron concentration. The effect of taste

Active Publication Date: 2021-01-05
UNIV OF SCI & TECH LIAONING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the dispersion of magnetic agglomeration, some fine-grained magnetite cannot overcome the impact of water flow, and is discharged together with the overflow tailings by the impact of water flow. This field is called black running, which will reduce the recovery rate of iron concentrate. Increase the grade of tailings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 A schematic structural diagram of a novel magnetic separation column according to an embodiment of the present invention is shown.

[0056] Such as figure 1 As shown, the new magnetic separation column includes:

[0057] A sorting cylinder 1, the top of the sorting cylinder 1 is provided with an overflow tank 2, and the bottom is provided with a concentrate discharge port 3;

[0058] A plurality of sets of excitation coils 4, the plurality of sets of excitation coils 4 are respectively sleeved on the sorting cylinder 1;

[0059] A water supply pipe 5, one end of the water supply pipe 5 is inserted in the bottom of the sorting cylinder 1;

[0060] A sorting screen 6, the sorting screen 6 is arranged in the sorting drum 1, between the overflow tank 2 and the sorting drum 1;

[0061] a control unit 7, the control unit 7 is electrically connected to the multiple sets of excitation coils 4;

[0062] A feeder hopper 8, the feeder hopper 8 is arranged on the top ...

Embodiment 2

[0072] Choose Anshan type magnetite, raw ore total iron grade 61.7%, grinding fineness-0.074mm accounts for 83.4%, the raw ore of pulp concentration 30% is sorted through the novel magnetic separation column of the embodiment 1 of the present application, specific sorting The results are shown in Table 1.

Embodiment 3

[0074] Anshan type magnetite is selected, the raw ore has a total iron grade of 61.7%, the grinding fineness of -0.074mm accounts for 83.4%, and the raw ore with a pulp concentration of 30% is sorted by the new magnetic separation column of the application. The specific separation results are shown in Table 1 . The difference from Embodiment 2 is that the novel magnetic separation column of this embodiment is not equipped with an ejector. The specific sorting results are shown in Table 2.

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Abstract

The invention provides a novel magnetic separation column. The novel magnetic separation column comprises a separating barrel, a plurality of groups of magnet exciting coils which separately sleeve the separating barrel, a water feeding tube, a separating screen, a control unit and an ejector, wherein an overflow slot is formed in the top of the separating barrel; a concentrated core discharge hole is formed in the bottom of the separating barrel; one end of the water feeding tube is inserted into the bottom of the separating barrel; the separating screen is arranged in the separating barrel and is positioned between the overflow slot and the separating barrel; and the control unit is electrically connected to the plurality of groups of magnet exiting coils. The novel magnetic separation column can increase an iron recovery rate while ensuring the grade of the iron concentrated ores, and reduces the grade of iron in tailings.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, and more specifically relates to a novel magnetic separation column. Background technique [0002] my country is a big iron and steel country in the world. Its steel output ranks first in the world, and its demand for iron concentrate also ranks first in the world. There is still a relatively serious shortage of iron ore resources. Among the iron ore resources in Anshan, magnetite accounts for more than 70% , Magnetite adopts magnetic separation process is the most economical and clean production method, so the progress of magnetic separation process is very critical to improve the economic and technical indicators of iron ore utilization in our region. [0003] Drum magnetic separators and magnetic dehydration tanks are the most widely used and have a long history, which are used for roughing and beneficiation of magnetite, but they are difficult to obtain high-grade concen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/23B03C1/30
CPCB03C1/23B03C1/30
Inventor 赵通林谭晓儒
Owner UNIV OF SCI & TECH LIAONING