CN102277490B - Biological column leaching device - Google Patents

Biological column leaching device Download PDF

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Publication number
CN102277490B
CN102277490B CN2011102633999A CN201110263399A CN102277490B CN 102277490 B CN102277490 B CN 102277490B CN 2011102633999 A CN2011102633999 A CN 2011102633999A CN 201110263399 A CN201110263399 A CN 201110263399A CN 102277490 B CN102277490 B CN 102277490B
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inner core
leaching device
external jacket
column leaching
cylindrical
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CN2011102633999A
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CN102277490A (en
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郑春丽
税刘杨
吴红娟
王建英
柳建设
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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    • 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

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Abstract

The invention relates to a biological column leaching device which is used for leaching metal in ore, belonging to mechanical equipment for biological metallurgy. The lower part of an outer clamping sleeve of the biological column leaching device is provided with a support seat, and the bottom is provided with an air inlet port, a feeding port and a sampling port; a base plate is fixedly installed on the support seat, the base plate is provided with a vent hole, a cylindrical vent pipe is arranged on the vent hole, the top of the cylindrical vent pipe is sealed, and the wall of the pipe is provided with small holes; a base plate of an inner barrel is provided with a through hole, the inner barrel is arranged in the outer clamping sleeve, and the cylindrical vent pipe is arranged in the inner barrel through the through hole; and the top of the inner barrel is provided with an end cover, the top of the end cover is provided with an opening, and the inner barrel and the end cover are fixedly connected through bolts. In the biological column leaching device, the ventilation capacity in a liquid is increased through the cylindrical vent pipe, so that breathed air can be better distributed in ore pulp, the growth and metabolism ability of microorganisms are improved, and the utilization rate of ore pulp is increased. The biological column leaching device has the advantages of simple structure, uniform solid and liquid mixing, sufficient solution of breathed air, difficult caking of ore pulp and the like.

Description

Biological column leaching device
Technical field
The present invention relates to a kind of biological column leaching device, be used for the leaching that Gold in Ores belongs to, belong to the biological metallurgy mechanical means.
Background technology
The distinguishing feature of Mineral Resources in China is that low, complicated, the difficult and middle-size and small-size ore deposit of grade is in the majority, and traditional dressing and smelting process is difficult to carry out economy, green, effectively extracts." national medium-term and long-term scientific and technical development program strategic research " points out " Mineral Resources in China is in short supply, and situation is serious ".Solve Mineral Resources in China problem in short supply, just must the efficient new technology of utilizing of development resource.
Research and production practice both at home and abroad show, compare traditional metallurgical technology, the biological metallurgy technology demonstrates powerful advantages, in the development and use of low-grade, complicated, unmanageable Mineral resources, biological metallurgy has low cost, short flow process, pollutes the advantages such as little, become the cutting edge technology of 21 century world's mineral extraction, have broad application prospects.
It is ripe that technology among this development uses that is that all right, and have many weak points: single bacterium oxidation capacity that one, biological metallurgy are used needs from promoting bacterial biomass without obviously improving, and optimization bacterial growth condition equal angles improves whole bacterial oxidation ability; Its two, the bio-reactor ubiquity shearing force of high-grade ore Bioleaching industrial application is large, serious to cell injury, pulp density is low causes the device processes ability not high.
The shortcomings such as present post bath unit in actual applications is commonly the tank of vertical barrel type, and the breather device is simple, and ore pulp mixes inhomogeneous, causes leaching effect bad, and efficient is not high.
Therefore, exploitation have efficient mixed performance and a good oxygen mass transfer coefficients high-performance bio Leaching reaction device for increasing leaching yield, shortening leaching cycle, reducing production costs just seems particularly important.
In existing Bioleaching device, all there is certain weak point, such as the multiple guide shell gas circulating bioreactor bacteria ore leaching of Lin Jianqun etc. with soak the ore deposit bacterium and cultivate (the patent No.: 200610070171.7), pay attention to soaking the effect of ventilating in the process of ore deposit, utilize ventilation to reach the purpose of stirring.But in soaking the ore deposit process, when ventilation was excessive, the shearing force that ventilation produces was very large on the growth metabolism impact of soaking the ore deposit bacterium; And a kind of microbial column type leaching reactor of Zhou Hongbo etc. (patent No.: 200910310522.0) pay attention to control and circulation to the reaction conditions in the reaction process, raise so that soak the production cost in ore deposit; And a kind of microbial leaching device of Huo Qiang etc. (patent No.: 200720169742.2) pay attention to soak in the reactor circulation of bacterium liquid, to the requirement of ventilation with utilize not high.
Summary of the invention
The object of the present invention is to provide a kind of solid-liquid that can make more fully to mix, improve the bioleaching device of metal leaching rate.
Technical solution:
The present invention includes: external jacket, inner core, the external jacket bottom is provided with bearing, the bottom is provided with inlet mouth, drain hole and thief hole, be installed with base plate on the bearing, base plate is provided with ventilating pit, ventilating pit is provided with cylindrical ventpipe, cylindrical ventpipe top seal, tube wall is provided with aperture, and the base plate of inner core is provided with through hole, and inner core places in the external jacket, cylindrical ventpipe passes through hole and places in the inner core, the inner core top is provided with end cap, and the end cap top is provided with opening, and inner core and end cap are bolted to connection.
Described external jacket is cylindrical tubular.
Described external jacket bottom is the spherical end.
The contact position of described external jacket top and inner core is provided with seal ring, and inner core can slide up and down along external jacket.
Described external jacket inwall is provided with secondary bearing.
Described secondary bearing is provided with spring.
The present invention adopts inside and outside double-jacket, and the interval certain hour utilizes mechanical force to promote inner core, makes ore pulp partly flow into external jacket and carries out the mixing of secondary ore pulp, increases the solid-liquid contact area with this.The present invention also increases air flow in the liquid by cylindrical ventpipe, and the gas that is conducive to pass into is distributed in the ore pulp better, improves the microorganism growth metabolic capacity, thereby improves the utilization ratio of ore pulp.The present invention is than the conventional post bath unit, have simple in structure, solid-liquid mixes, ventilate dissolving fully, the advantages such as ore pulp prevented from caking.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the vertical view at the A-A place of Fig. 1 of the present invention;
Fig. 3 B of the present invention place enlarged view;
The cylindrical ventpipe enlarged diagram of Fig. 4 the present invention.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention is applicable to the Bioleaching of various metals in the biological metallurgy, and this device comprises three main parts, external jacket 5, inner core 8 and cylindrical ventpipe 7.
External jacket 5 is cylindrical tubular, external jacket 5 bottoms are the spherical end 6, circular thief hole 12, inlet mouth 13, drain hole 16 are arranged at bottom, the spherical ends 6, the contact position of external jacket 5 tops and inner core 8 is provided with seal ring, inner core 8 can slide up and down along external jacket 5, bearing 11 is arranged at top, the spherical ends 6, bearing 11 is used for supporting the inner core 8 before promoting for the first time, fixed base plate 14 is installed on the bearing 11, base plate 14 has ventilating pit, ventilating pit is provided with cylindrical ventpipe 7, cylindrical ventpipe 7 top seals, and tube wall is provided with aperture 17.
Inner core 8 is cylindrical tubular, and the base plate 9 of inner core 8 is provided with through hole 10, and ore pulp flowed down when through hole 10 was used for inner core 8 lifting.Inner core 8 places in the external jacket 5, and cylindrical ventpipe 7 passes through hole 10 and places in the inner core 8, and inner core 8 tops are provided with spherical end cover 2, and spherical end cover 2 tops are provided with opening 1, and opening 1 is used for the adding of exhaust and bacterium liquid.Inner core 8 is fixedly connected with the bolt 3 of spherical end cover 2 by the band hook, and the hook on the bolt 3 of band hook is used for the lifting of inner core 8.Inner core 8 walls are provided with the secondary bearing 15 that can stretch with spring, place inner core 8 when being used for each lifting inner core 8.Before inner core 8 promotes for the first time, inner core 8 bottoms are placed on the bearing 11 of external jacket 5 bottoms, later every lifting once, inner core 8 is placed on being positioned on the secondary bearing 15 on the outer clip jacket wall of ejection, ore pulp is flowed down from the aperture of inner core 8 bottoms, reach and stir and the purpose of mixing an ore pulp.
Cylindrical ventpipe 7 openings communicated with the spherical end 6 of external jacket, and the opening that makes gas arrive base plate 14 from the spherical end 6 enters cylindrical ventpipe 7 again, finally is distributed among the ore pulp.What traditional sphere ventilation sparger that is arranged in the leaching reactor bottom existed mainly is that problem is: have highdensity solid mineral soaking used being mostly in ore deposit, in the process that leaches, ore is because action of gravitation, easily compacting, caking, make microorganism be difficult to growth, metabolism in ore pulp, thereby affect leaching effect.The cylindrical ventpipe 7 that the present invention adopts can be distributed in ventilation in the ore pulp better, can effectively avoid the generation of above-mentioned situation.
Device of the present invention is made by the acid and alkali-resistance corrosion-resistant material, installs changeablely, and the packaged unit that is used for the laboratory can adopt synthetic glass or acidproof plastics manufacturing, and large-scale plant can adopt the stainless steel manufacturing that scribbles acid resisting material.
This device forms the effect of similar stirring by the mutual motion of inside and outside chuck, reaches the well-mixed purpose of ore pulp; By the effect of cylindrical ventpipe so that the required ventilation of the growth metabolism of thalline meets the requirements of level, and ventilation can be on certain degree mixed ore pulp again, reduce the compacting, caking of ore pulp etc.Reach the increase leaching yield by changing the microbial growth environmental aspect, shorten the purpose of production cycle.
Specific implementation process of the present invention is as follows:
After the present invention carries out high-temp steam sterilizing to device; Under aseptic condition, open the spherical end cover 2 of inner core 8; The ore that adds certain particle diameter; Inner core 8 loam cakes and inner core cylindrical part are sealed to prevent microbiological contamination; With pump a certain amount of bacterium liquid of finite concentration is pumped into the inner core 8 from opening 1 again, bacterium liquid is mixed with ore; The temperature of setting device, PH make device be in the environmental optima of microorganism growth metabolism; After reaction for some time inner core 8 liftings once are put on first secondary bearing 15; Again inner core 8 liftings once are put on the next secondary bearing 15 after reacting again for some time; So repeatedly promote, until rise on last secondary bearing 15 behind the reaction certain hour, reaction finishes; This moment, ore pulp was positioned at external jacket 5 fully, opened external jacket bottom drain hole 16, emitted the extraction that ore pulp is used for follow-up metal; Thereby finish all processes that once soaks the ore deposit.
The below introduces a kind of laboratory applications example of the present invention:
The device cumulative volume is 50L, and the work loading amount is 35L; Device external jacket column part height is 1000mm, and diameter is 300mm; Device inner core column part height is 1000mm, and diameter is 260mm.
Gold mine is husky: granularity is 200 orders, and Gold Content is 46g/t.
Bacterial classification is had a liking for the ferrous thiobacillus (Acidithiobacillus ferrooxidans) of acid oxidase.
Bacterial classification preparation and inoculation, have a liking for the ferrous thiobacillus of acid oxidase (Acidithiobacillus ferrooxidans) and cultivate the improved 9K substratum of employing, 500ml triangular flask liquid amount is 200ml, 30 ℃, PH is 2.0, and shaking table is 160r/min, be cultured to logarithmic phase, inoculation, inoculum size is 8%, from the charging opening adding inner core of inner core.
Improved 9K substratum: (NH 4) 2SO 43g, KCl 0.1g, K 2HPO 40.5g, MgSO 4H 2O 0.5g, 0.01g, Ca (NO 3) 20.01g, distilled water 1000mL, pH 2.0.On the basis of improved 9K substratum, add ferrous sulfate 44.2g/L.
Soak the ore deposit condition: 8% pulp density, PH are 2.0, and temperature is 30 ℃, and air flow is 1.8m 3/ h adopts the single-stage batch operation mode.
Regularly sampling detects bacterium liquid, with the content of atomic fluorescence spectrum mensuration arsenic, with the content of barium sulfate turbidimetry mensuration sulfate radical, measures Fe with dichromate titration 2+Oxidation ratio, survey the concentration of thalline with ultraviolet spectrophotometer.
Be 30d reaction time, is reacted to the 5th day and promotes an inner core, is reacted to the 10th day and promotes an inner core, is reacted to the 20th day and promotes an inner core.Recording arsenic-removing rate behind the 30d is 75.6%.

Claims (6)

1. biological column leaching device, it is characterized in that, comprise: external jacket (5), inner core (8), external jacket (5) bottom is provided with bearing (11), the bottom is provided with thief hole (12), inlet mouth (13), drain hole (16), be installed with base plate (14) on the bearing (11), base plate (14) is provided with ventilating pit, ventilating pit is provided with cylindrical ventpipe (7), cylindrical ventpipe (7) top seal, tube wall is provided with aperture (17), the base plate (9) of inner core (8) is provided with through hole (10), inner core (8) places in the external jacket (5), cylindrical ventpipe (7) passes through hole (10) and places in the inner core (8), inner core (8) top is provided with end cap (2), and end cap (2) top is provided with opening (1), and inner core (8) is fixedly connected with by bolt (3) with end cap (2).
2. biological column leaching device according to claim 1 is characterized in that, described external jacket (5) is cylindrical tubular.
3. biological column leaching device according to claim 1 and 2 is characterized in that, described external jacket (5) bottom is the spherical end (6).
4. biological column leaching device according to claim 3 is characterized in that, the contact position of described external jacket (5) top and inner core (8) is provided with seal ring, and inner core (8) can slide up and down along external jacket (5).
5. biological column leaching device according to claim 4 is characterized in that, described external jacket (5) inwall is provided with secondary bearing (15).
6. biological column leaching device according to claim 5 is characterized in that, described secondary bearing (15) is provided with spring.
CN2011102633999A 2011-08-30 2011-08-30 Biological column leaching device Expired - Fee Related CN102277490B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560099B (en) * 2012-02-14 2013-05-22 南华大学 Tandem column soak test device
CN103663471A (en) * 2013-11-21 2014-03-26 成都兴能新材料有限公司 Microbiological leaching device for silicon material
CN113444881B (en) * 2021-06-25 2022-06-21 南昌大学 Pipeline that can pre-buried in tombarthite heap leaching field

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WO1990010602A1 (en) * 1989-03-13 1990-09-20 Envirotech Corporation Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
WO1991014007A1 (en) * 1990-03-05 1991-09-19 U.S. Gold Corporation Biological conversion apparatus and method
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CN2402690Y (en) * 2000-01-22 2000-10-25 兰州有色冶金设计研究院 Arsenic-contg. gold ore biological oxidizing cell
CN1331759A (en) * 1998-11-18 2002-01-16 拜克泰克(澳大利亚)控股有限公司 Bio-oxidation process and appts.
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CN201056584Y (en) * 2007-07-17 2008-05-07 中国铝业股份有限公司 Microbial leaching device
CN101285118A (en) * 2008-05-20 2008-10-15 华东理工大学 Biologic oxidation reactor for refractory auric sulfide ore
US7727510B2 (en) * 2003-12-23 2010-06-01 Bhp Billiton Sa Limited Method of and apparatus for simulating a biological heap leaching process
CN201574188U (en) * 2009-10-12 2010-09-08 吉林吉恩镍业股份有限公司 Air-filling type biological oxidation tank
CN101876006A (en) * 2009-11-26 2010-11-03 中南大学 Microbial column type leaching reactor
CN202246787U (en) * 2011-08-30 2012-05-30 内蒙古科技大学 Biological column leaching device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010602A1 (en) * 1989-03-13 1990-09-20 Envirotech Corporation Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
WO1991014007A1 (en) * 1990-03-05 1991-09-19 U.S. Gold Corporation Biological conversion apparatus and method
US5143543A (en) * 1991-08-23 1992-09-01 U.S. Gold Corporation Biological conversion method
CN1331759A (en) * 1998-11-18 2002-01-16 拜克泰克(澳大利亚)控股有限公司 Bio-oxidation process and appts.
CN1384890A (en) * 1999-09-07 2002-12-11 比利顿知识产权有限公司 Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed
CN2402690Y (en) * 2000-01-22 2000-10-25 兰州有色冶金设计研究院 Arsenic-contg. gold ore biological oxidizing cell
US7727510B2 (en) * 2003-12-23 2010-06-01 Bhp Billiton Sa Limited Method of and apparatus for simulating a biological heap leaching process
CN201056584Y (en) * 2007-07-17 2008-05-07 中国铝业股份有限公司 Microbial leaching device
CN101285118A (en) * 2008-05-20 2008-10-15 华东理工大学 Biologic oxidation reactor for refractory auric sulfide ore
CN201574188U (en) * 2009-10-12 2010-09-08 吉林吉恩镍业股份有限公司 Air-filling type biological oxidation tank
CN101876006A (en) * 2009-11-26 2010-11-03 中南大学 Microbial column type leaching reactor
CN202246787U (en) * 2011-08-30 2012-05-30 内蒙古科技大学 Biological column leaching device

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