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Process for recovering iron resources from waste dump

A technology for dumping and recycling iron, which is applied in the direction of solid separation, etc., can solve the problems of low iron resource content and difficulty in utilization, and achieve the effects of fine particle size, reduced operating costs, and good dissociation

Active Publication Date: 2021-11-12
包钢集团矿山研究院(有限责任公司) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of low content of iron resources in dumps and difficulty in utilization, and at the same time pay attention to the enrichment of useful elements in the iron beneficiation tailings, so as to create conditions for the subsequent recycling of these useful elements

Method used

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  • Process for recovering iron resources from waste dump
  • Process for recovering iron resources from waste dump
  • Process for recovering iron resources from waste dump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] From the No. 3 dump in Baiyun Obo, samples transported by car and samples transported by tape were collected at a ratio of 1:1 and mixed for dry pre-selection. The jaw crusher is used for crushing, and the raw ore is crushed to obtain a coarsely crushed product with a particle size of -300mm. The dry separation machine with a field strength of 199.04kA / m is used to dry the coarsely crushed product to obtain a total iron grade of 14.15%. Dry beneficiation concentrate K1; K1 is crushed to obtain a medium crushed product with a particle size of -60mm. The dry beneficiation machine with a field strength of 278.66kA / m is used to dry the medium crushed product to obtain a dry beneficiation concentrate with a total iron grade of 15.51%. Dry beneficiation concentrate K2; K2 is crushed to obtain finely crushed products with a particle size of -12mm, and the finely crushed products are dry separated by a dry separator with a field strength of 278.66kA / m to obtain a dry beneficiati...

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Abstract

The invention discloses a process for recovering iron resources from a waste dump. The process adopts a dry pre-concentration process to discard tailings in advance, so that the subsequent operation cost is reduced, dry-separated concentrate with the total iron grade greater than or equal to 20% is obtained, and the iron separation grade is improved. According to the process, valuable minerals such as rare earth, fluorite and niobium are enriched while qualified iron ore concentrate is obtained, and a good foundation is laid for subsequent recovery of the minerals; and the process lays a foundation for comprehensive utilization of waste dump resources, and is an efficient and energy-saving process.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of mine solid waste, in particular to a process for recovering iron resources from dumps. Not only can the previously piled up waste dump resources be recycled, bringing economic benefits, it can also reduce land occupation and reduce environmental pollution. Background technique [0002] At present, mining enterprises are one of the industries that generate the most waste. As a place where mines pile up waste rocks and surrounding rocks, the dump site is the next frontier for the comprehensive utilization of mine solid waste. Baiyun Obo is a super-large polymetallic deposit with symbiotic iron, rare earth and niobium. After decades of open-pit mining, four dumps in the east, south, west and north have been formed near the main mine and the east mine. With the continuous development of beneficiation technology, these stacked mineral resources have gradually become useful. Recy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00Y02W30/52
Inventor 彭艳荣闫国英柳建勇刘凤国王俊杰牟英杰胡清华李文轩刘宇强邵华武丹李富田
Owner 包钢集团矿山研究院(有限责任公司)
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