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Method of microorganism induction bauxite flotation desilicication

A technology for microorganisms and bauxite, applied in flotation, solid separation and other directions, can solve the problems of inability to apply industrial beneficiation, long reaction time, etc., and achieve the effects of saving the dosage of chemicals, enhancing hydrophilicity, and reducing energy consumption

Inactive Publication Date: 2015-04-22
平顶山市华兴浮选工程技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem that the long reaction time of desilication by biological treatment can not be applied to industrial mineral processing, the present invention provides a method for desilication of bauxite induced by microorganisms by flotation. The method of desiliconization from bauxite has the advantages of high recovery rate of bauxite, good desiliconization effect, less energy consumption and chemical consumption, and will not pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for microorganism-induced flotation desilication of bauxite, comprising the following steps:

[0044] 1) Add medium to the microbial culture tank, inoculate after sterilization Paenibacillus stellifer Hp91 and Sporolactobacillus laevolacticus NRIC 0362 These two kinds of microorganisms are regularly filled with air to make the microorganisms grow rapidly until each ml of culture solution contains 1-3×10 5 microorganisms, the mixed microbial liquid was prepared for subsequent use;

[0045] 2) Primary selection of bauxite

[0046] Crush and grind the bauxite to less than 200 mesh, then add water to make a slurry with a concentration of 10%, add the dispersant, collector and microbial mixed bacteria solution prepared in step 1) to the slurry, After stirring and mixing evenly, let it stand for 5 minutes, send it into the flotation tank for primary selection, and obtain concentrate and tailings, which are set aside;

[0047] Among them, add 1.5*10 per liter o...

Embodiment 2

[0053] A method for microorganism-induced flotation desilication of bauxite, comprising the following steps:

[0054] 1) Add medium to the microbial culture tank, inoculate after sterilization Paenibacillus stellifer IS and Sporolactobacillus laevolacticus NRIC 0363, fill it with air regularly to make the microorganisms grow rapidly until there are 1-3×10 5 microorganisms, the mixed microbial liquid was prepared for subsequent use;

[0055] 2) Primary selection of bauxite

[0056] Crush and grind the bauxite to less than 200 mesh, then add water to make a slurry with a concentration of 10%, add the dispersant, collector and microbial mixed bacteria solution prepared in step 1) to the slurry, After stirring and mixing evenly, let it stand for 10 minutes, and send it into the flotation tank for primary separation to obtain concentrate and tailings, which are set aside;

[0057] Among them, add 2.0*10 per liter of pulp -6 mol of dispersant, 2.5*10 -4 mol of collector, 10...

Embodiment 3

[0063] A method for microorganism-induced flotation desilication of bauxite, comprising the following steps:

[0064] 1) Add medium to the microbial culture tank, inoculate after sterilization Paenibacillus stellifer IS and Sporolactobacillus laevolacticus IAM 12321, fill it with air periodically to make the microorganisms grow rapidly until there are 1-3×10 5 microorganisms, the mixed microbial liquid was prepared for subsequent use;

[0065] 2) Primary selection of bauxite

[0066] Crush and grind the bauxite to less than 200 mesh, then add water to make a slurry with a concentration of 10%, add the dispersant, collector and microbial mixed bacteria solution prepared in step 1) to the slurry, After stirring and mixing evenly, let it stand for 15 minutes, and send it into the flotation tank for primary separation to obtain concentrate and tailings, which are set aside;

[0067] Among them, add 2.5*10 per liter of pulp -6 mol of dispersant, 3*10 -4 mol of collector, 1...

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PUM

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Abstract

A method of microorganism induction bauxite flotation desilicication relates to the technical field of bauxite flotation, by adding microorganism into ore pulp of bauxite, the microorganism carries out surface modification to the mineral in the ore pulp, accordingly, the hydrophilia of the mineral per se is changed, and thus the mineral is more easily subjected to flotation separation. Compared with a conventional flotation technology in the prior art, the method has the advantages of high bauxite recovery rate, good desilicication effect, less energy consumption and reagent consumption, and the like, and furthermore, the method does not cause pollution to the environment; simultaneously, the microorganism treatment time is short, so that the method can be applied to industrialization flotation on a large scale.

Description

technical field [0001] The invention relates to the technical field of bauxite flotation, in particular to a method for microorganism-induced flotation desilication of bauxite. Background technique [0002] Aluminum has been widely used in various industries due to its many excellent properties, and has become the second most commonly used metal after steel. With the rapid development of the aluminum industry, the ever-expanding primary aluminum market, and the increasing use of non-metallurgical grades of alumina, the alumina industry will also achieve comprehensive and continuous prosperity and development. And important raw materials for refractory industry. At present, the annual mining capacity of bauxite ore and other aluminum-containing ores in the world is about 133 million tons, including 123 million tons of metallurgical grade bauxite, 7 million tons of non-metallurgical grade bauxite and alumina. 3 million tons of raw materials such as alunite and nepheline....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 谢建平马智敏陈兴华霍强
Owner 平顶山市华兴浮选工程技术服务有限公司
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