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Magnetite dry-separation tailing-discarding pre-separation technology

A magnetite and dry separation technology, which is applied in the directions of magnetic separation, solid separation, and screening, can solve the problems of restricting the grade of iron ore concentrate, increasing the cost of beneficiation, and large stripping ratio, so as to increase the raw ore processing capacity and The output of iron concentrate, significant economic benefits, and the effect of improving the grinding grade

Active Publication Date: 2009-12-02
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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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

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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 through the mine car 1 for crushing, and the coarse crusher 2 discharges the material through the belt conveyor into a section of dry magnetic pulley 3, and separates a section of concentrate products and waste rocks.

[0021] (2) A section of concentrated ore products enters the middle crusher 5 through the middle crusher ore bin 4 through the belt conveyor, and the waste rock enters the first section of waste rock bin 6 through the belt conveyor.

[0022] (3) The discharge of the middle crusher 5 enters the second-stage dry magnetic pulley 7 through the belt conveyor, and the second-stage concentrate products and waste rocks are sorte...

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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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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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