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Magnetite finish grinding system and grinding method thereof

A magnetite and grinding technology, applied in the direction of grain processing, etc., can solve the problems that steel slag and slag cannot meet the grade and output requirements, the system processing capacity and efficiency are poor, and particle classification cannot be carried out, etc., and achieve a small footprint , Large processing capacity, low steel consumption and low power consumption

Active Publication Date: 2014-05-14
CHENGDU LEEJUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: provide a magnetite final grinding system and grinding method thereof, to solve the existing problems in the existing grinding system, such as poor system processing capacity and efficiency, poor recovery effect, and inability to carry out particle classification , the technical problem that the selected steel slag and slag cannot meet the required grade and output requirements, thus effectively solving the problems existing in the above-mentioned prior art

Method used

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  • Magnetite finish grinding system and grinding method thereof

Examples

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Effect test

Embodiment 1

[0030] A thalassemia magnetite in Shanxi, the original ore has a total iron content of 11.5%, and a magnetic iron content of 6.8%.

[0031]Minerals with a particle size of 0-75mm after rough crushing are sent to the steady flow and constant weight bin, and the feed rate is 500t / h, and then flow into the high-pressure roller mill for roller compaction. The processing capacity of the high-pressure roller mill is 1500t / h. The final material is sent to the multi-stage air separator by the No. 2 bucket elevator for breaking up and grading, and then obtains >3mm coarse grains, -3mm~0.2mm No.1 fine grains and -3mm~0.2mm No.2 fine grains, <0.2mm fine powder products with four grades; coarse grade products with an amount of 1200t / h return to the high pressure roller mill through No. 2 belt conveyor and No. 1 bucket elevator to form a cycle; No. 1 fine grain and No. 2 fine The combined volume of granular and two-stage products is 400t / h and sent to the No. 2 fluidized magnetic separator...

Embodiment 2

[0035] A thalassemia magnetite in Xinjiang, the raw ore has a total iron content of 18.6%, and a magnetic iron content of 15.3%

[0036] Minerals with a particle size of 0-75mm after rough crushing are sent to the steady flow and constant weight bin. The feed rate is 700t / h and then flow into the high pressure roller mill for roller compaction. The final material is sent to the multi-stage air separator by the No. 2 bucket elevator for breaking up and grading, and then obtains >3mm coarse grains, -3mm~0.2mm No.1 fine grains and -3mm~0.2mm No.2 fine grains, <0.2mm fine powder products of four grades; coarse grade products with an amount of 1400t / h return to the high pressure roller mill through No. 2 belt conveyor and No. 1 bucket elevator to form a cycle; No. 1 fine grain and No. 2 fine The combined volume of granular and two-stage products is 350t / h and sent to the No. 2 fluidized magnetic separator for magnetic separation and tailings. The amount of fine tailings thrown away...

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Abstract

The invention discloses a magnetite finish grinding system and a grinding method thereof. An outlet of a steady-flow constant-weight bin is connected with a high-pressure roller mill, one end of a second bucket elevator is arranged below the high-pressure roller mill, a multi-stage air powder concentrator is arranged at the other end of the second bucket elevator, a second belt conveyor is arranged below a coarse grain outlet of the multi-stage air powder concentrator and connected with a first bucket elevator, a second boiling type magnetic concentrator is arranged below a fine grain outlet of the multi-stage air powder concentrator, a fine concentrate outlet of the second boiling type magnetic concentrator is connected with a third belt conveyor, the third belt conveyor is connected with the first bucket elevator, the first bucket elevator is connected with an inlet of the steady-flow constant-weight bin, a fine powder outlet of the multi-stage air powder concentrator is connected with an inlet of a cyclone type dust collector, an outlet of the cyclone type dust collector is connected with a bag collector, another outlet of the cyclone type dust collector is connected with the first belt conveyor, and the first belt conveyor is connected with a first boiling type magnetic concentrator. The magnetite finish grinding system and the grinding method can be used for obtaining high-grade powdered iron, and are short in process, low in production cost, high in efficiency and fine in recovery effect.

Description

Technical field [0001] The present invention involves a magneto -grinding system and its powder grinding method, especially in the metallurgical, mine and other industries.Media Magnetic Mine -Mine Milling Technology Field. Background technique [0002] In the field of metallurgy, mining and other industries, magnetic materials such as iron mines such as iron ore and magnetic selection are needed. Now the industry is vigorously studying roll powder grinding technology and dry magnetic selection technology, especially rollers and magnetic magnetic regulation machines and magnetic magnetic selection technologyThe research of the selection machine has achieved certain results, but as the powder grinding magnetic selection system for magnetite, in the actual use process, there are still problems such as insufficient systems and / or not high selection rates.like: [0003] The Chinese patent application number is 201110130407.2, and the application date is May 19, 2011. The open number ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C4/00B02C23/00B02C23/40
Inventor 何亚民魏勇徐智平
Owner CHENGDU LEEJUN IND