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Mineral separation process and system for ultra-lean magnetite ore

An ultra-lean magnetite and process technology, applied in the field of ultra-lean magnetite beneficiation process and system, can solve the problems of high energy consumption for grinding and magnetic separation, the need to build tailings ponds, and large water consumption for ore beneficiation, achieving Low storage cost, improved sorting index and filtration efficiency, and reduced grinding fineness

Active Publication Date: 2016-03-23
中冶沈勘工程技术有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] The first object of the present invention is to provide a mineral processing process for ultra-lean magnetite. The dry pre-selection step is added to the mineral processing process, which solves the problems of large energy consumption, high cost, large water consumption and the need for grinding and magnetic separation. Technical Problems in Building Tailings Storage

Method used

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  • Mineral separation process and system for ultra-lean magnetite ore
  • Mineral separation process and system for ultra-lean magnetite ore
  • Mineral separation process and system for ultra-lean magnetite ore

Examples

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Embodiment 1

[0053] Such as figure 1 and 2 Shown:

[0054] Step 1, coarse and medium crushing and screening: the processing capacity of raw ore is 16.5 million tons per year, and the raw ore extracted from the stope is unloaded into the coarse crushing buffer bin 2 by the automobile coarse crushing workshop, and the coarse crushing equipment 3 is PEJ- 4 sets of 1200×1500 jaw crushers, 2 sets of CH870 cone crushers and 2 sets of PYH-8C cone crushers for medium crushing equipment 5, YA-2460 circular vibrating screen 7 for screening equipment, after coarse crushing, it enters secondary crushing The buffer bin 4 enters the screening buffer bin 6 after intermediate crushing, and then enters the circular vibrating screen 7 for screening. The material on the screen (above 50mm) returns to the intermediate crushing to form a closed circuit, and the material under the screen (below 50mm) enters the high-pressure roller mill Intermediate storage bin 8.

[0055] Step 2, ultra-fine crushing and cla...

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Abstract

The invention provides a mineral separation process and system for an ultra-lean magnetite ore. The mineral separation process for the ultra-lean magnetite ore comprises the following steps of sequentially carrying out coarse crushing, intermediate crushing and fine crushing on a raw magnetite ore to obtain a fine-particle ore; carrying out dry magnetic separation on the fine-particle ore, and throwing tailings to obtain a dry concentrate; and carrying out wet grinding and separation on the dry concentrate. The dry pre-separation step is additionally arranged in the mineral separation process, so that the technical problems of high ore grinding and magnetic separation energy consumption, high cost, high mineral separation water consumption, tailing pond construction and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of beneficiation of ferrous metal mines, and in particular relates to a beneficiation process and system of ultra-lean magnetite. Background technique [0002] The vast majority of iron ores in my country are lean iron ores, and most of these lean iron ores are extremely low-grade ultra-lean magnetite. The ultra-lean magnetite has a total iron grade of 10%-20%, and a magnetic iron grade of <5%. my country's ultra-poor magnetite resources amount to tens of billions of tons, of which Hebei and Liaoning provinces have more than 10 billion tons of ultra-poor magnetite resources. The research and development of ultra-poor magnetite can alleviate the contradictions of insufficient domestic ore supply and iron ore's heavy dependence on imports. It is in line with the spirit of the "National Medium and Long-Term Science and Technology Development Plan" (2006-2020) and has great strategic significance. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B03C1/30
CPCB02C21/00B03C1/30
Inventor 母传伟窦习章易小祥
Owner 中冶沈勘工程技术有限公司
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