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Desulfurization method of high-sulfur bauxite

A high-sulfur bauxite and ore grinding technology, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of long period of microbial desulfurization, difficult dehydration, high dosage of chemicals, etc., and achieves good industrial application prospects , The effect of reducing the consumption of flotation reagents and broadening the production source channels

Pending Publication Date: 2019-01-15
湖南埃铝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using microorganisms to treat FeS in pulp 2 High-efficiency adsorption to change the surface properties of pyrite, but the specific strains used for desulfurization require a lot of research, the cultivation of specific strains takes a long time, and the survival rate is low
[0005] Based on the above-mentioned status quo, that is, the flotation desulfurization process has high dosage of reagents, low desulfurization efficiency, equipment corrosion caused by acidic environment, and difficult dehydration after treatment; gas pollution and dihydrite dehydration reaction problems in roasting desulfurization process; cycle time of microbial desulfurization method long; it is necessary to conduct in-depth research and propose a new desulfurization method for high-sulfur bauxite

Method used

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  • Desulfurization method of high-sulfur bauxite
  • Desulfurization method of high-sulfur bauxite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Take 100kg of high-sulfur bauxite from a certain place, and its S content is 1.34%;

[0059] The bauxite is crushed, then ground, and ground to a high-sulfur bauxite grinding product with a fineness of -400 to -900 mesh 47%, and the high-sulfur bauxite grinding product is classified, and the high-sulfur bauxite grinding product is The fine particles of -400~-900 mesh in the sulfur bauxite grinding products are sorted out, which is low-sulfur aluminum concentrate with a weight of 29.12kg and a sulfur content of 0.27% (mass fraction), and the remaining coarse-grained high-sulfur The bauxite was subjected to desulfurization flotation to obtain 66.87kg of flotation aluminum concentrate containing 0.31% sulfur, and 4.01kg of sulfur concentrate containing 26.3% sulfur.

Embodiment 2

[0061] Take 100kg of high-sulfur bauxite from a certain place, and its S content is 1.31%;

[0062] The bauxite is crushed, then ground, and ground to a high-sulfur bauxite grinding product with a fineness of -600 mesh 35%, and the high-sulfur bauxite grinding product is classified, and the high-sulfur bauxite The fine particles of -600 mesh in the ore grinding products are separated into low-sulfur aluminum concentrate with a weight of 24.5kg and a sulfur content of 0.32% (mass fraction). The remaining coarse-grained high-sulfur bauxite is desulfurized and floated Election, obtained 71.85kg of flotation aluminum concentrate, its sulfur content was 0.28% (mass fraction), also obtained 3.65kg of sulfur concentrate, its sulfur content was 28.32% (mass fraction).

[0063] When grinding the crushed bauxite, linear contact or extrusion-based grinding methods are used for selective grinding.

[0064] The grinding method adopts dry or wet grinding, and the grinding process can adopt...

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Abstract

The invention belongs to the technical field of mine processing engineering, and specifically discloses a desulfurization method of high-sulfur bauxite. The method is characterized in that the ore isselectively grinded to produce bauxite powder mainly containing low-sulfur fine particles, and then the low-sulfur fine particles are separated out to obtain the small-particle-size aluminum concentrate; the rest bauxite powder is subjected to floatation desulfurization to obtain the aluminum concentrate and sulfur concentrate; the amount of high-sulfur bauxite directly entering the floatation desulfurization process is decreased, so that the medicine consumption is decreased; the particle size of the high-sulfur bauxite entering the floatation desulfurization process is large, so that the floatation can be conveniently carried out; and the concentrates and the tailings can be easily dehydrated. With the adoption of the method, the alumina production source channel is expanded; the sustainable development of the aluminum industry is promoted; and the method has a good industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, in particular to a desulfurization method of high-sulfur bauxite. Background technique [0002] High-sulfur bauxite generally refers to bauxite with a sulfur content higher than 0.7%. In my country's high-sulfur bauxite, more than 50% of the ore is of high grade. With the rapid development of industry, the gradual depletion of aluminum resources and the continuous increase in the utilization of metal aluminum, high-sulfur bauxite has gradually become an important raw material for alumina production. [0003] With the rapid development of alumina production in recent years, the ore supply situation of major alumina factories across the country has become increasingly tense, and the competition for bauxite resources has intensified. With the sharp reduction of bauxite resources, it has been necessary to make full and reasonable use of my country's high-sulfur bauxite to prom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00B03D1/018B03D1/02B03D101/02B03D101/00B03D103/02
CPCB03B7/00B03B9/00B03D1/018B03D1/025B03D2201/00B03D2201/007B03D2201/02B03D2203/02
Inventor 陈湘清陈黎军邹春林陈和清陈环月
Owner 湖南埃铝环保科技有限公司