Beneficiation production system of lean magnetite

A technology of lean magnetite and production system is applied in the field of beneficiation and production system of lean magnetite, which can solve the problems of equipment wear and large particle size of coarsely crushed products, and achieve the advantages of reducing wear, reducing ore transportation cost and prolonging service life. Effect

Active Publication Date: 2019-02-19
马钢集团设计研究院有限责任公司
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the large particle size of coarsely crushed products in the beneficiation process of lean magnetite existing in the prior art, it will cause huge wear and tear on various equipment during the process of transportation from the stope to the concentrator, failing to achieve the goal of "possible throwing and early throwing" Problem, the present invention provides a kind of beneficiation production system of lean magnetite

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Beneficiation production system of lean magnetite
  • Beneficiation production system of lean magnetite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The beneficiation process of a kind of poor magnetite of the present embodiment is applied to a certain poor magnetite open-pit mine, the iron grade of raw ore is 18~22%, and iron mineral is mainly magnetite in the ore, and magnetic iron content is about 70% (accounting for total iron content), the operation steps are:

[0044] A. Coarse crushing: In the ore stope 1, the lean magnetite is coarsely crushed in the coarse crusher, and then sieved by the sieving machine after the coarse crushing;

[0045] B. Secondary crushing: In the ore stope 1, the undersieve of step A is directly entered into the secondary crusher for crushing;

[0046] C, magnetic separation: discard the waste rock after directly performing dry magnetic separation on the crushed material of step B in the ore stope 1;

[0047] D. Transfer: the coarse concentrate obtained in the previous step is transported to the fine crushing and sorting operation area of ​​the subsequent mineral processing area 2;

...

Embodiment 2

[0051] A kind of beneficiation process of lean magnetite in the present embodiment, the specific steps are basically the same as in embodiment 1, and the improvement is that: the oversize of step A is transferred to the coarse crusher for coarse crushing to improve the utilization rate of ore; coarse crushing to a particle size of 0-300mm, so as to facilitate further crushing by the secondary crusher. In step B, the intermediate crushing is crushed to a particle size of 0-70 mm, so as to facilitate the magnetic separation work of the permanent magnetic dry magnetic separator, greatly reduce the impact of the ore on the hopper and the silo of the magnetic separator, and reduce the wear of the ore on the conveyor belt ; The weak magnetic dry magnetic separation described in step C is completed by a permanent magnetic dry magnetic separator, so as to be able to adapt to the magnetic separation of ores with a maximum particle size of 70mm.

Embodiment 3

[0053] A kind of beneficiation process of lean magnetite in the present embodiment, the specific steps are the same as in embodiment 2, and the improvement is that: the field strength of the permanent magnet dry magnetic separator is 0.3T; in step B, the medium crushing particle size is The content of 40-70mm is 20%, the content of 10-40mm is 55%, and the content of less than 10mm is 25%. It is suitable for lean magnetite ore with a magnetic iron content greater than 70%. The three technical features work together to achieve a better magnetic separation effect. To achieve the purpose of improving the grade of rough concentrate in the ore stope.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a beneficiation production system of lean magnetite, and belongs to the technical field of beneficiation. The beneficiation process comprises the steps of coarse crushing, middle crushing, magnetic separation and transfer; and a middle crushing device is arranged in front of an ore mining field, the coarse crushing, the middle crushing and the dry type magnetic separation work are directly carried out on the ore mining field, the purpose of early throwing and early discarding of the tailing waste rock is achieved, the grade of rough concentrate is improved, and the oretransportation amount is reduced, the ore transportation cost is reduced, the service life of a belt and a funnel lining plate of the magnetic separator is prolonged, so that the operation cost of a mine is effectively reduced. The production system comprises a coarse crusher, a screening machine, a middle crusher, a magnetic separator, an adhesive tape conveyor I and an adhesive tape conveyor IIwhich are sequentially arranged in an ore mining field according to a production line, wherein the adhesive tape conveyor I is used for transporting the tailing waste rock which is subject to the magnetic separation to a waste dump, and the adhesive tape conveyor II is used for conveying coarse concentrate which is subject to the magnetic separation to a subsequent process. The area of mining ironore is expanded, the system is especially worthy of popularization and application for our country mineral facts taking the lean iron ore as a main body.

Description

[0001] The application of the present invention is a divisional application, the application number of the parent application: 2016106694123; the name of the parent application: a beneficiation process of lean magnetite and its production system; the application date of the parent application: 2016-8-15. technical field [0002] The invention belongs to the field of mineral processing technology, in particular to a mineral processing production system of lean magnetite. Background technique [0003] At present, my country has entered an energy-saving society, and energy costs are getting higher and higher, and mining is an industry that consumes a lot of energy in my country. This requires mining companies to start from the subtleties to find out the energy-saving and reducing energy consumption according to their own different conditions and ore characteristics. On the premise of ensuring the technical indicators of mineral processing, comprehensively research and adopt corre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/08B03C1/30
CPCB02C21/00B02C23/08B03C1/30
Inventor 孙业长刘建华陈孝文
Owner 马钢集团设计研究院有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap