WO2009018695A1 - Procédé d'enrichissement et de criblage de bactéries de désulfuration de bauxite utilisant de l'eau acide provenant de puits de mine de régions contenant du minerai à forte teneur en soufre - Google Patents

Procédé d'enrichissement et de criblage de bactéries de désulfuration de bauxite utilisant de l'eau acide provenant de puits de mine de régions contenant du minerai à forte teneur en soufre Download PDF

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Publication number
WO2009018695A1
WO2009018695A1 PCT/CN2007/003720 CN2007003720W WO2009018695A1 WO 2009018695 A1 WO2009018695 A1 WO 2009018695A1 CN 2007003720 W CN2007003720 W CN 2007003720W WO 2009018695 A1 WO2009018695 A1 WO 2009018695A1
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WO
WIPO (PCT)
Prior art keywords
sulfur
bauxite
bacteria
screening
slurry
Prior art date
Application number
PCT/CN2007/003720
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English (en)
Chinese (zh)
Inventor
Wangxing Li
Qiang Huo
Jikui Zhou
Huaxia Li
Zhuo Zhao
Original Assignee
Aluminum Corporation Of China Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Aluminum Corporation Of China Limited filed Critical Aluminum Corporation Of China Limited
Publication of WO2009018695A1 publication Critical patent/WO2009018695A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20—Bacteria; Culture media therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for enriching and sorting bauxite desulfurization bacteria, and more particularly to a method for enriching and screening bauxite desulfurization bacteria by utilizing acid mine water in a high sulfur mine area. Background technique
  • the main sulfide minerals contained in the high-sulfur bauxite are pyrite (FeS 2 ), its isomerite pyrite and gum pyrite, and gypsum CaS0 4 -sulfate.
  • FeS 2 pyrite
  • the stone-filled minerals react with the alkali.
  • the reaction mechanism is as follows: The iron stone U is first converted to sodium disulfide, and the sodium disulfide decomposes to form sodium sulfide at high temperature. Sodium thiosulfate is finally oxidized to sodium sulfate into the solution.
  • Microorganisms can act on minerals in a variety of ways, converting elements in minerals into ions in solution.
  • the research object of biometallurgy mainly uses iron and sulfur oxidizing bacteria to leaching almost all sulfide minerals such as copper, uranium, gold and nickel.
  • the research on desulfurization of bauxite has not been reported in the literature. It has been reported that there are more than 20 kinds of microorganisms that can be used for leaching, mainly including ⁇ - ik ⁇ f 3 ⁇ 4 ⁇ Acidithiobacillus ferrooxidans, A. f), oxidized stone ⁇ A cidithiobacillus thiooxidans, A.
  • biometallurgical-related bacteria are enriched and screened by the following methods: collecting water samples containing bacteria, inoculating a small amount of water in an iron-containing 9K medium for enrichment and screening, and then enriching the bacteria in the enriched solution multiple times. filter.
  • the above method is a random screening, and the selected bacteria are not necessarily the required bacteria, so multiple enrichment screening is required. Summary of the invention
  • the object of the present invention is to exist in the above biometallurgical related bacteria enrichment screening technology
  • the shortcomings of the purpose are not strong, and the bacteria enrichment screening has the disadvantage of randomness.
  • a method for the simple and rapid utilization of the acid mine pit water in the Gaoshike mining area for the enrichment and screening of bauxite deodorization bacteria is proposed.
  • the method of the invention can be used for bauxite mining, especially high-sulfur bauxite desulfurization, after multiple enrichment screening and no need for enrichment screening for multiple domestication of bacteria.
  • the method for enriching and screening the bauxite decalcification bacteria by using the acidic pit water in the Gaoshike mining area comprises the following steps: adding iron-free to the acidic pit water in the Gaoshike mining area of the Jiji
  • the iron-free 9K inorganic salt component is: (NH 4 ) 2 S0 4 , K 2 HP0 4 , Ca(N0 3 ) 2 , MgS0 4 7H 2 0, and KC1.
  • said 80 4 is 1:1 (by volume ratio of water) sulfuric acid.
  • the high sulfur bauxite ore fines have a particle size of from -200 to 40 mesh.
  • the high sulfur bauxite ore powder is added in an amount such that the concentration of the resulting slurry is 5 to 25% by weight.
  • the sulfur content of the high-sulfur ore acid pit water is greater than 0.7% by weight; and the high sulfur bauxite ore powder has a sulfur content of more than 0.7% by weight.
  • the slurry is placed in a gas bath thermostat for incubation.
  • the gas bath constant temperature oscillator has a rotation speed of 100 to 200 rpm, a culture temperature of 25 to 50 ° C, and a culture time of 5 to 40 days.
  • Bacteria are enriched and screened in a medium containing high-sulfur bauxite.
  • the bacteria use sulfur or iron-bearing minerals in high-sulfur bauxite as energy to obtain high-sulfur bauxite.
  • the bacteria are enriched and screened in a medium containing high-sulfur bauxite, the selected bacteria have a high ability to withstand pulp shearing, and can be used for high stone without multiple domestication. Desulphurization of bauxite.
  • the bacteria in the acid mine pit water are enriched and screened by the high-sulfur bauxite mine in the mining area where the acid mine water is located.
  • the obtained bacteria have better desulfurization effect on the high-sulfur bauxite ore than the high-sulfur bauxite mine in other mining areas.
  • the acid mine pit water is enriched and screened for the obtained bacteria.
  • the invention utilizes the acid mine pit water in the Gaoshike mining area to enrich and screen the bauxite desulfurization bacteria, and comprises the following steps: directly adding the following iron-free 9K inorganic salt component to the acidic mine pit water collected in the high sulfur mine area: (NH 4 ) 2 S0 4 l ⁇ 5g, K 2 HPO 4 0.2 ⁇ 0.7g, Ca(N0 3 ) 2 0.005 ⁇ 0.02g, MgS0 4 7H 2 0 0.2 ⁇ 0.7g, KC1 0.05 ⁇ 0.3g, with 1: 1H 2 S0 4 adjusts the pH to 1.2 ⁇ 3.0, and then adds high-sulfur bauxite ore powder with a particle size of -200-40.
  • the concentration of the slurry formed after adding the ore powder is 5 ⁇ 25% by weight.
  • the obtained slurry is cultured in a gas bath constant temperature oscillator at a temperature of 25 to 5 (TC, rotation speed of 100 to 200 rpm, and the culture time is 5 to 40 days, and the first enrichment screening mixed bacteria can be obtained.
  • the first enrichment screening mixture is obtained.
  • the Chongqing Gaoshike bauxite mine is used to carry out bacterial enrichment screening of the acidic pit water in the high-sulfur bauxite mining area of Chongqing, and the Chongqing high-sulfur bauxite mining area obtained by charging in a 250ml conical flask is used.
  • Bacterial desulfurization of Chongqing high-sulfur bauxite was carried out by using mixed bacteria obtained by enrichment screening.
  • 90 ml iron-free 9K medium ((NH 4 ) 2 S0 4 3g/L, K 2 HP0 4 0.5 was placed in a 250 ml Erlenmeyer flask.
  • a 250 ml Erlenmeyer flask was filled with 90 ml of iron-free 9K medium ((NH 4 ) 2 S0 4 3g/L, K 2 HP0 4 0.5g/L, Ca(N0 3 ) 2 O.Olg/L, MgS0 4 7H 2 0 0.5g / L, KC1 O.lg / L, adjust the pH to 1.5 with 1 : 1 H 2 S0 4 , add lOg Nanchuan 1300 high-sulfur bauxite ore, adjust the pH of the leaching system with 1: 1 H 2 S0 4 , Shaker speed 180r / min, immersion temperature 30 ° C, inoculated 10ml enriched and screened bacteria (bacterial concentration in the inoculum was l.OxlO 8 / cm 3 ), immersed in a gas bath thermostat for 40 days
  • the mineral has a sulfur content of 0.61%, a desulfurization rate of 87.2%, and an alumina recovery of
  • the enriched liquid after enrichment and screening was filtered through a filter paper, filtered through a microporous membrane with a pore size of 0.22 ⁇ m, and collected in an iron-free 9K medium.
  • a bacterial bacterial liquid having a bacterial concentration of l.OxlO 8 /cm 3 was obtained.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • Zoology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Genetics & Genomics (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biomedical Technology (AREA)
  • Virology (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Medicinal Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

L'invention concerne un procédé d'enrichissement et de criblage de bactéries de désulfuration de bauxite utilisant de l'eau acide provenant de puits de mine de régions contenant du minerai à forte teneur en soufre. Le procédé comporte les étapes suivantes: ajouter 9 k de sels inorganiques non ferreux à l'eau acide collectée provenant d'un puits de mine de régions contenant du minerai à forte teneur en soufre; et régler ensuite le pH à une valeur de 1,2-3,0 au moyen de H2SO4; ajouter le minerai pulvérulent de bauxite à forte teneur en soufre pour former une suspension minière; mettre en culture la suspension afin d'enrichir et de cribler les bactéries provenant de l'eau acide dudit puits de mine.
PCT/CN2007/003720 2007-08-03 2007-12-21 Procédé d'enrichissement et de criblage de bactéries de désulfuration de bauxite utilisant de l'eau acide provenant de puits de mine de régions contenant du minerai à forte teneur en soufre WO2009018695A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA200710119907XA CN101130807A (zh) 2007-08-03 2007-08-03 利用高硫矿区酸性矿坑水进行铝土矿脱硫细菌筛选的方法
CN200710119907.X 2007-08-03

Publications (1)

Publication Number Publication Date
WO2009018695A1 true WO2009018695A1 (fr) 2009-02-12

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PCT/CN2007/003720 WO2009018695A1 (fr) 2007-08-03 2007-12-21 Procédé d'enrichissement et de criblage de bactéries de désulfuration de bauxite utilisant de l'eau acide provenant de puits de mine de régions contenant du minerai à forte teneur en soufre

Country Status (2)

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CN (1) CN101130807A (fr)
WO (1) WO2009018695A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102897812A (zh) * 2012-10-19 2013-01-30 北京化工大学 一种低温焙烧脱硫法活化处理高硫铝土矿的方法
WO2022012904A1 (fr) 2020-07-13 2022-01-20 Unilever Ip Holdings B.V. Compositions anti-transpirantes en bâton

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1475559A (zh) * 2002-08-15 2004-02-18 北京有色金属研究总院 耐酸诱变浸矿菌种的选育方法
CN1924042A (zh) * 2006-10-13 2007-03-07 中国铝业股份有限公司 一种细菌脱除高硫铝土矿中杂质硫的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1475559A (zh) * 2002-08-15 2004-02-18 北京有色金属研究总院 耐酸诱变浸矿菌种的选育方法
CN1924042A (zh) * 2006-10-13 2007-03-07 中国铝业股份有限公司 一种细菌脱除高硫铝土矿中杂质硫的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102897812A (zh) * 2012-10-19 2013-01-30 北京化工大学 一种低温焙烧脱硫法活化处理高硫铝土矿的方法
WO2022012904A1 (fr) 2020-07-13 2022-01-20 Unilever Ip Holdings B.V. Compositions anti-transpirantes en bâton

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CN101130807A (zh) 2008-02-27

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