Method for sorting and pre-enriching lean hematite by using X-ray radiation

A pre-concentration and ray technology, applied in the field of mineral processing, can solve the problem of not many treatment methods, achieve the effect of reasonable process technology, improve economic and technical indicators and comprehensive benefits, and improve equipment utilization

Inactive Publication Date: 2013-09-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for lean hematite ore, there are not many feasible processing methods, especially for the mineral processing method of using X-ray radiation to select lean hematite ore, there is no report at home and abroad

Method used

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  • Method for sorting and pre-enriching lean hematite by using X-ray radiation
  • Method for sorting and pre-enriching lean hematite by using X-ray radiation
  • Method for sorting and pre-enriching lean hematite by using X-ray radiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Crushing: Crushing the lean hematite ore to less than 150mm through a crusher;

[0027] (2) Screening: Use a screening machine with a sieve size of 90mm to sieve the crushed material, and the material on the sieve (+90mm) will be treated separately, and the material under the sieve will be screened with a sieving machine with a sieve size of 60mm The material (-60mm) will be processed separately, and the material on the screen (-90mm +60mm) will be transported to the pre-selection operation ore bin of the X-ray radiation sorter through the belt conveyor. The iron content of the material on the screen is 17.42%, and the rest are gangue minerals ;

[0028] (3) X-ray radiation sorting machine pre-selection: the material on the screen obtained in step (2) is fed to the X-ray radiation sorting machine through the feeder, and in the control system of the X-ray radiation sorting machine according to the original ore The Fe content in the Fe content sets the threshold for ...

Embodiment 2

[0035] (1) Sieving: Screen the under-sieve material (-60mm) obtained in step (2) of Example 1 with a sieving machine with a sieve size of 30mm, and the under-sieve material (-30mm) will be treated separately, and the sieve The material is transported to the ore bin of the X-ray radiation sorter through the conveyor belt. The grade of iron in the lean hematite ore on the screen is 19.48%, and the rest are gangue minerals;

[0036] (2) X-ray radiation sorting machine pre-selection: feed the sieved material obtained in step (1) to the X-ray radiation sorting machine through the feeder, and in the control system of the X-ray radiation sorting machine according to the original ore The iron content in the iron content sets the threshold for the separation of concentrate and tailings to be 0.12. After being sorted by the X-ray radiation sorter, the ore with the threshold greater than 0.12 will be considered as concentrate and enter the concentrate receiving tank, while the threshold i...

Embodiment 3

[0042] (1) Crushing: Crushing the lean hematite ore to less than 150mm through a crusher;

[0043] (2) Screening: Use a screening machine with a screen hole size of 90mm to screen the crushed material, and the material under the screen (-90mm) will be processed separately, and the material on the screen will be transported to the X-ray radiation sorter for pre-selection by the belt conveyor In the ore bin, the grade of iron in the hematite ore on the sieve is 17.66%, and the rest are gangue minerals;

[0044] (3) X-ray radiation sorting machine pre-selection: the material on the screen obtained in step (2) is fed to the X-ray radiation sorting machine through the feeder, and in the control system of the X-ray radiation sorting machine according to the original ore The iron content in the iron content sets the threshold for the separation of concentrate and tailings to be 0.18. After being sorted by the X-ray radiation sorter, the ore with the threshold greater than 0.18 will be ...

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Abstract

The invention relates to a method for sorting and pre-enriching lean hematite by using X-ray radiation. The invention belongs to the technical field of mineral processing. The method comprises the steps that: copper-containing ores are crushed to a size below 150mm by using a crusher; the crushed material is sieved by using a sieving machine with a mesh size greater than or equal to 20mm; on-sieve material is delivered to an X-ray radiation sorting machine through a feeder; a sorting threshold is set in the control system of the X-ray radiation sorting machine according to the iron content in crude ore; and after the sorting of the X-ray radiation sorting machine, concentrate and tailings are obtained. The method provided by the invention is domestically initiative. Target component grade of processed ore is low, mechanical and automation degrees are high, ore-sorting cost is saved, the grade of selected material iron of a concentrator is greatly improved, and equipment utilization rate is substantially improved. Also, the process provided by the invention has the advantages of reasonable technology and stable running. With the method, industrialization of lean hematite pre-sorting can be easily realized, and concentrator economic and technical indicators and comprehensive benefits can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for pre-enriching lean hematite ore by adopting X-ray radiation sorting. Background technique [0002] Iron is the earliest discovered, most widely used, and most used metal in the world, and its consumption accounts for about 95% of the total metal consumption. Iron ore is mainly used in the iron and steel industry to smelt pig iron (generally above 2% carbon content) and steel (generally below 2% carbon content) with different carbon contents. Iron and steel products are widely used in various sectors of the national economy and in all aspects of people's lives. They are the most important and most widely used metal materials in modern industries. They have become an important pillar industry for social development and occupy an extremely important position in the national economy. [0003] In 2006, my country's proven iron ore reserves were 60....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/346
Inventor 陈晓龙韩跃新王泽红李启亮
Owner NORTHEASTERN UNIV
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