Magnetite dry-separation tailing-discarding pre-separation technology

A magnetite and dry separation technology, applied in the directions of magnetic separation, solid separation, sieving, etc., can solve the problems of restricting the grade of iron ore concentrate, low recovery rate, increase of beneficiation cost, etc., to increase raw ore processing capacity and iron The effect of concentrate production, effective mineral resources, and significant economic benefits

Active Publication Date: 2010-11-03
ANSTEEL GRP MINING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the crushing, sorting, and tailing of a large number of mixed rocks, the cost of mineral processing increases, and chlorite, schist, mica schist, etc. are easy to muddy during the grinding process, which restricts the improvement of the grade of iron concentrate.
If the ore with low grade and large mixed rock is discarded, it will result in low recovery rate, high stripping ratio, high cost, waste of resources, and the ore supply capacity cannot meet the ore volume demand of the concentrator

Method used

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  • Magnetite dry-separation tailing-discarding pre-separation technology
  • Magnetite dry-separation tailing-discarding pre-separation technology

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Embodiment Construction

[0018] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 Shown, magnetite dry selection of the present invention throws tailings pre-selection process flow as follows:

[0020] (1) The magnetite ore is sent to the coarse crusher 2 by the mine car 1 for crushing, and the coarse crusher 2 discharges the material through the coarse crushing belt conveyor into a section of dry magnetic pulley 3, and separates a section of concentrate product and a section of waste rock.

[0021] (2) A section of concentrate product enters the middle crusher 5 through the middle crusher ore bin 4 from the first section of the concentrate belt machine, and a section of waste rock enters the first section of waste rock bin 6 through the third belt conveyor.

[0022] (3) The discharge of the intermediate crusher 5 enters the second-stage dry magnetic pulley 7 through the intermediate cru...

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Abstract

The invention relates to the separation technical field of magnetites, in particular to a magnetite dry-separation tailing-discarding pre-separation technology. Magnetic iron ore is crushed by a coarse crusher and an intermediate crusher and then is separated out ore concentrate products and waste rocks via a one-stage dry magnetic pulley and a two-stage dry magnetic pulley; the products on a machine screen of a pre-screener enter into a fine crusher to be crushed via an ore chamber of the fine crusher, and enter into a secondary screening ore chamber and a screening checking machine to be screened, the on-screen products of the screening checking machine and the prescreener return to the fine crusher for repeat crushing; the blow-screener products are the final crushing products which enter an ore grinding chamber for next operation. With the magnetite dry-separation tailing-discarding pre-separation technology, the waste rocks can be effectively eliminated, so the feed grinding grade is improved, the green ore throughput and the output of iron ore concentrate are increased, mineral resources can be effectively utilized to gain significant economic benefits for mines. The invention is suitable for various mines and concentration plants for the ore pre-separation of magnetite.

Description

technical field [0001] The invention relates to the field of magnetite beneficiation technology, in particular to a magnetite dry-separation tailings pre-separation process. Background technique [0002] In recent years, with the mining of the mine to the deep, the ore body has gradually become smaller, the rock interlayers have increased, and the ore output grade has declined. Due to the crushing, sorting and tailing of a large number of mixed rocks, the cost of mineral processing increases, and chlorite, schist, mica schist, etc. are easy to muddy during the grinding process, which restricts the improvement of the grade of iron concentrate. If the ore with low grade and large mixed rock is discarded, it will result in low recovery rate, high stripping ratio, high cost, waste of resources, and the ore supply capacity cannot meet the ore volume demand of the concentrator. Therefore, removing waste ore before grinding, improving the grade of grinding, realizing energy saving...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C23/08B03C1/00B07B1/00
Inventor 于克旭陈强鞠洪刚孙德娣薛敏
Owner ANSTEEL GRP MINING CO LTD
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