CN107739824A - A kind of device and method of the contactless bioleaching red mud of batch - Google Patents
A kind of device and method of the contactless bioleaching red mud of batch Download PDFInfo
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- CN107739824A CN107739824A CN201711226410.8A CN201711226410A CN107739824A CN 107739824 A CN107739824 A CN 107739824A CN 201711226410 A CN201711226410 A CN 201711226410A CN 107739824 A CN107739824 A CN 107739824A
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- leachate
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- bacterium solution
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 241000894006 Bacteria Species 0.000 claims abstract description 70
- 238000002386 leaching Methods 0.000 claims abstract description 68
- 230000001112 coagulating effect Effects 0.000 claims abstract description 58
- 238000000855 fermentation Methods 0.000 claims abstract description 53
- 230000004151 fermentation Effects 0.000 claims abstract description 53
- 238000004062 sedimentation Methods 0.000 claims abstract description 52
- 239000008188 pellet Substances 0.000 claims abstract description 38
- 241000228245 Aspergillus niger Species 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 239000001963 growth medium Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims description 33
- 230000001954 sterilising effect Effects 0.000 claims description 23
- 239000000701 coagulant Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000011282 treatment Methods 0.000 claims description 11
- 239000003814 drug Substances 0.000 claims description 10
- 239000013049 sediment Substances 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 230000001186 cumulative effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 235000015278 beef Nutrition 0.000 claims description 4
- 229940041514 candida albicans extract Drugs 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 238000011081 inoculation Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000005720 sucrose Substances 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- 239000012138 yeast extract Substances 0.000 claims description 4
- 238000010828 elution Methods 0.000 claims description 3
- 239000002054 inoculum Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 241000233866 Fungi Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000001651 autotrophic effect Effects 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 241000605118 Thiobacillus Species 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 235000013601 eggs Nutrition 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 241000605222 Acidithiobacillus ferrooxidans Species 0.000 description 1
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 description 1
- 101000765308 Aspergillus niger N-(5'-phosphoribosyl)anthranilate isomerase Proteins 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 241000589921 Leptospirillum ferrooxidans Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000605008 Spirillum Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 210000004700 fetal blood Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000012807 shake-flask culturing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of device and method of the contactless bioleaching red mud of batch, the device includes fermentation tank, bacterium solution knockout drum, coagulating sedimentation tank and leaching tank, aspergillus niger spore suspension is inoculated in culture medium and produces acid in fermentation cylinder for fermentation, caused zymotic fluid enters bacterium solution knockout drum, leachate after separation, which enters in coagulating sedimentation tank, further removes small mycelium and suspension therein, then the leachate of cleaning is sent into leaching tank and carries out acidolysis Leach reaction and mud liquid separation process with red mud powder, supernatant liquor after separation is the leachate of metal ion, bottom is the red mud residue after leaching.The technique mycelium pellet and red mud particle of the present invention is not in contact with therefore will not forming reluctant red mud microorganism mixing residue, be advantageous to mycelium pellet and the further recycling of red mud residue；Pattern is leached using batch, whole bioleaching red mud process has the advantages of green, environmental protection, low cost and scale are run.
Description
Technical field
The present invention relates to the field of hydrometallurgy of metal solid discarded object, and in particular to the bioleaching system of red mud.
Background technology
Red mud is the solid-state or semisolid powder pureed solid waste of aluminum oxide industry output, its rich in ferric ion and
Red or rufous is presented.1.5 tons or so of red mud can be produced by often producing 1 ton of aluminum oxide.Cut-off 2016, global red mud pilling
Measure more than 3,000,000,000 tons, and with annual 1.2 hundred million tons of speed increase.China's red mud storage is more than 4.0 hundred million tons, red mud annual production
More than 0.6 hundred million tons.
Because with undesirable features such as saline alkali, corrosivity, radioactivity, most red muds can not recycling profit at present
With processing can only be stored up.But the undesirable feature such as the corrosivity due to red mud, Leaching and radioactivity, red mud is in stockpiling
A large amount of farmland soils are not only occupied, serious environmental risk can be also brought to neighboring area.Therefore, it is practical to be badly in need of exploitation
Resource treatment technique red mud is recycled, cut down the volume of cargo in storage of red mud, reduce red mud to the negative of surrounding enviroment
Influence.
Red mud itself contains a large amount of metallic elements with recovery value as a kind of Industrial Solid Waste, including aluminium, iron,
Vanadium, titanium, gallium, germanium, scandium, thorium, uranium and rare earth element etc., therefore be a kind of " artificial from the angle red mud of resource recycling
Ore ".If wanting to reclaim these metallic elements, need to be leached into liquid medium first.So far, metal in red mud is leached
The correlation technique of element uses the chemical acid-hatching of young eggs more, including using all kinds of single or combination inorganic acid or organic acid.Chemical acid
Leaching method has the defects of energy-output ratio is big, investment and operating cost are high, liquid and waste slag produced difficult, environmental pollution is serious, it is difficult to
Meet environmental standard now.
Bioleaching technology refers to oxidation, reduction, complexing, absorption or the dissolving using specified microorganisms or its metabolite
Effect, some insoluble compositions in solid phase (such as heavy metal, sulphur and other metals) are separated into extraction consequently facilitating one kind of recovery
Technology.Compared with traditional chemical acid-hatching of young eggs, bioleaching technology has that non-secondary pollution, energy consumption are small, reaction condition is gentle, build
If the advantages such as operating cost is low, there is good development potentiality in field of hydrometallurgy.
The traditional bacterial classification that bioleaching uses is mainly the Thiobacillus ferrooxidans (Thiobacillus of autotrophic type
Ferrooxidans), Thiobacillus thioxidans (Thiobacillus thiooxidans) and iron oxide hook end spirillum
(Leptospirillum ferrooxidans).But these strains are not particularly suited for the bioleaching of red mud, reason is：It is red
Not sulfur-bearing and ferrous ion in mud, it can not give autotrophic bacterium metabolism the required energy；The high basicity of red mud itself causes
These acidophilia strains can not survive, if carrying out pre-acidified processing to red mud using inorganic acid, not only invest operating cost pole
Height, it can also produce secondary pollution；The toxic elements such as the heavy metal in red mud can dissolution in acid condition, this can suppress adaptability
The metabolic activity of not strong autotrophic type leaching bacterium, or even make its complete deactivation.Therefore, can not using traditional autotroph
Effective bioleaching system is built to red mud.
Heterotroph fungi is because its environmental suitability is strong, good stress resistance, that metabolism substrate scope is wide, production of organic acids is big etc. is excellent
Point, there is stronger application potential in structure bioleaching system aspects.But bioleaching is carried out simultaneously to mineral using fungi at present
There is no systematization and scale, technical merit rests on the laboratory shake flask culture studies stage mostly.
When carrying out bioleaching to red mud using fungi, if hypha,hyphae cell contacts with red mud powder red mud can be made big
Amount is wrapped in mycelium surface, and subsequent treatment difficulty separates the two in filter residue, has had a strong impact on that red mud and fungi are thin after leaching
The recycling of born of the same parents.
The content of the invention
Deficiency of the purpose of the present invention aiming at above-mentioned existing methods and techniques, there is provided one kind is by aspergillus niger as leaching
Strain, using batch leaching as leaching pattern, the red mud bioleaching system being produced on a large scale.In the operational mode of the system
Under, red mud powder is kept completely separate with hyphal cell, red mud filter residue and mycothallus recoverable after bioleaching, so as to realize
Green, environmental protection, low cost and the scale operation of whole bioleaching red mud process.
The object of the invention to solve the technical problems is realized using following technical scheme.Itd is proposed according to the present invention
A kind of contactless bioleaching red mud of batch device, including fermentation tank 1, bacterium solution knockout drum 2, coagulating sedimentation tank 3 and leaching
Filter tank 4, wherein, the bottom of fermentation tank 1 is connected by the first delivery pipe 20 with the top of bacterium solution knockout drum 2, and the bottom of bacterium solution knockout drum 2 is in
Taper, the conical lower portion is interior to be provided with filter screen 8, is provided between filter screen 8 and the side of bacterium solution knockout drum conical lower portion and collects leachate
Filtrate receiver 9, bacterium solution knockout drum and filtrate receiver generally sealing structure, the bottom of filtrate receiver 9 is provided with filtrate receiver leachate outflow tube
12 and backwash tube 11, the bottom centre position of filter screen 8 be mycelium pellet discharge pipe 10, the side wall of bacterium solution knockout drum 2 is equipped with side wall leaching
Liquid outflow tube 7, side wall leachate outflow tube 7 are connected with the second delivery pipe 21, and filtrate receiver leachate outflow tube 12 and second conveys
Pipe 21 converges accesses coagulating sedimentation tank 3 for a total leachate outflow tube 24, or, filtrate receiver leachate outflow tube 12 and second
Delivery pipe 21 is respectively connected to coagulating sedimentation tank 3；
The top of coagulating sedimentation tank 3 includes the flow pump 19 of medicine storing pot 14 and the 3rd equipped with chemicals dosing plant, the chemicals dosing plant, mixes
Solidifying agent is stored in medicine storing pot 14, squeezes into coagulating sedimentation tank by the 3rd flow pump, the bottom of coagulating sedimentation tank 3 exports provided with sediment
22；
Coagulating sedimentation pot sidewall is connected by the 3rd delivery pipe 25 with the top of leaching tank 4, and leaching tank top is thrown provided with red mud
Add pipe 15, its bottom is provided with red mud residue pipe 17, and side wall is provided with leachate discharge pipe 16.Inside coagulating sedimentation tank 3 and leaching tank 4
It is respectively arranged with agitating device 13.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further.
The device of the contactless bioleaching red mud of foregoing batch, wherein, the side of the bacterium solution knockout drum conical lower portion
Face and the side of filter screen and horizontal plane are in 30~60 ° of angles；
The filter pore size of the filter screen is 0.075~0.125mm；
The caliber of the mycelium pellet discharge pipe 10 is more than 2cm.
The device of the contactless bioleaching red mud of foregoing batch, wherein, the bacterium solution separates pot sidewall vertical direction
The side wall leachate outflow tube of multiple different heights is provided with, each side wall leachate outflow tube has a side wall leachate respectively
Outflow tube Valve controlling；The side wall leachate outflow tube of multiple different heights collects to the second delivery pipe 21；
The agitating device 13 is the rotating machinery agitator of vane type；
First delivery pipe 20, total leachate outflow tube 24, be respectively provided with the 3rd delivery pipe 25 first flow pump 6,
Second flow pump 18, the 4th flow pump 23.
A kind of method that the contactless bioleaching red mud of batch is carried out using said apparatus, is comprised the following steps：
(1) sterilizing of culture medium and the fermentation and acid of aspergillus niger are carried out in fermentation tank (1), is specially：
Aspergillus niger spore is inoculated in PDA plate, the spore of growth and maturity is made of the saline elution of sterilizing
Spore suspension；
Culture medium is added in fermentation tank and carries out sterilization treatment, sterilizing finishes, and treats that tank body cools down, sets ferment tank to join
Number；Aspergillus niger spore suspension is inoculated in fermentation tank, inoculum concentration is according to 1~5 ‰ that volume is culture medium cumulative volume, fermentation production
Sour process is in after aspergillus niger inoculation, and when the pH of fermentation cylinder for fermentation liquid is less than 2.2, fermentation and acid process terminates,
Close fermentation tank；
(2) separation of mycelium pellet and leachate is carried out in bacterium solution knockout drum, is specially：
Bacterium solution point will be sent into by the first delivery pipe 20 by the fermentation of Aspergillus niger liquid containing mycelium pellet caused by fermentation tank (1)
From tank (2), zymotic fluid stands 120~180min in bacterium solution knockout drum, and after bacterium solution layering, lower floor is mycelium pellet, and upper strata is
The leachate of leaching red mud, the side wall leachate outflow tube 7 positioned at mycelium pellet layer top is opened, discharges leachate rapidly, then
The filtrate receiver leachate outflow tube 12 for opening the bottom of filtrate receiver 9 further discharges remaining leachate in bacterium solution knockout drum, side wall
Woods filtrate in leachate outflow tube 7 and filtrate receiver leachate outflow tube 12 is discharged into coagulating sedimentation through total leachate outflow tube 24
Tank 3, after leachate discharge process terminates, mycelium pellet discharge 10 is opened, mycelium pellet is discharged from bacterium solution knockout drum；
When bacterium solution knockout drum long operational time causes bottom screen to block, leachate is reduced by efficiency, pass through recoil
Wash pipe 11 to backwash filter screen with clear water, recover its water flowing performance, the bacterium rinsed out on the waste water and filter screen after backwash
Silk is together from mycelium pellet discharge pipe discharge system；
(3) the small mycelium and suspension in leachate are further removed in coagulating sedimentation tank, is specially：
Coagulant is added by the chemicals dosing plant being equipped with coagulating sedimentation tank, opens agitating device 13, by coagulant and leaching
Filtrate mixes rapidly, and the coagulating time is 20~40min；After coagulating terminates, agitating device is closed, into precipitating
Journey, after standing 30~60min, precipitation process terminates, and supernatant is sent into leaching tank, coagulating sedimentation tank bottom by the 3rd delivery pipe
The sediment in portion is discharged into the further dewater treatment of plate and frame filter press by sediment outlet；
(4) make red mud that acidolysis Leach reaction and the mud liquid separation process of metal ion occur with leachate in leaching tank,
Specially：
After leachate enters in leaching tank, red mud powder is added into pipe 15 by red mud and added in leaching tank 4, red mud powder is pressed
Dosage according to quality is 1~10% of leachate quality in leaching tank；Agitating device is opened, red mud powder is mixed with leachate
Uniformly, acidolysis Leach reaction carries out 6~10h；Acidolysis Leach reaction terminates, and closes agitating device, and system separated into mud liquid
Journey, 90~120min is stood, the supernatant on leaching tank top is the leachate of metal ion, and bottom is the red mud after leaching
Residue；
Metal ion leachate is discharged from the leachate discharge pipe 16 of leaching pot sidewall, and valuable gold is further reclaimed after collection
Belong to element；Red mud residue is discharged from the red mud residue pipe 17 of leaching pot bottom, is directly recycled.
A kind of method of the contactless bioleaching red mud of foregoing batch, wherein, aspergillus niger in step (1) spore suspension
Spore concentration is 1 × 107~1 × 108Individual/mL；
The sterilising conditions of culture medium are 115~125 DEG C, 102.5~105kPa sterilizings, 25~35min；The solvent of culture medium
For deionized water, its composition is according to mass concentration：Sucrose 5~15%, yeast extract 0.01~0.02%, beef extract 0.01~
0.02%th, KNO30.02~0.05%；
Ferment tank parameter is arranged to：32~35 DEG C, 2.5~2.8mg/L of dissolved oxygen of temperature, mixing speed 120~
150r/min。
A kind of method of the contactless bioleaching red mud of foregoing batch, wherein, zymotic fluid from enter bacterium solution knockout drum
To the final time control of bacterium solution knockout drum that all flows out in 240min.
A kind of method of the contactless bioleaching red mud of foregoing batch, wherein, the coagulant in step (3) medicine storing pot
For polyacrylamide solution, solvent is water, and the mass concentration of polyacrylamide is 3~5%, coagulant according to volume dosage
For 0.05~0.1% of leachate cumulative volume in coagulating sedimentation tank.
A kind of method of the contactless bioleaching red mud of foregoing batch, wherein, red mud powder described in step (4) be by
60~100 mesh sieves are crossed after red mud drying.
By above-mentioned technical proposal, the advantages of the present invention are：
1. a bioleaching system, in operation, mycelium pellet and red mud particle do not contact, therefore will not be formed
Reluctant red mud microorganism mixing residue, mycelium pellet keeps more completely original respectively with red mud particle after bioleaching
Form, be advantageous to mycelium pellet and the further recycling of red mud residue.
2. a bioleaching system leaches pattern using batch, with leaching flow is short, plant equipment is simple, easy maintenance dimension
The advantages of shield.
3. a bioleaching system leaches pattern using batch, even if serious strain pollution phenomenon occurs in single batch,
Also the bioleaching efficiency of next batch will not be had a negative impact.
4. a bioleaching system is not present because of strain pollution and the problem of heavy damage leaching system, leachate is very short
Finished in time with red mud particle reaction.
Brief description of the drawings
Fig. 1 is the installation drawing of the present invention.
【Component symbol explanation】
1：Fermentation tank 2：Bacterium solution knockout drum 3：Coagulating sedimentation tank 4：Leaching tank 5：Valve
6：First flow pump 7：Side wall leachate outflow tube 8：Filter screen 9：Filtrate receiver
10：Mycelium pellet discharge pipe 11：Backwash tube 12：Filtrate receiver leachate outflow tube
13：Agitating device 14：Medicine storing pot 15：Red mud adds pipe 16：Leachate discharge pipe
17：Red mud residue pipe 18：Second flow pump 19：3rd flow pump 20：First delivery pipe
21：Second delivery pipe 22：Sediment outlet 23：4th flow pump 24：Total leachate outflow tube
25：3rd delivery pipe
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to a kind of device of the contactless bioleaching red mud of batch proposed by the present invention, its is specific
Embodiment, structure, feature and its effect, describe in detail as after.
The present invention includes fermentation tank 1, bacterium solution knockout drum 2, coagulating sedimentation tank 3 and leaching tank 4, and the bottom of fermentation tank 1 passes through the
One delivery pipe 20 at the top of bacterium solution knockout drum with being connected；The bottom of bacterium solution knockout drum 2 is tapered, and filter screen 8, bacterium are provided with the conical lower portion
The side of liquid knockout drum conical lower portion and the side of filter screen and horizontal plane are in 30~60 ° of angles；The filter pore size of the filter screen is
0.075~0.125mm.The filtrate receiver 9 for collecting leachate, bacterium are provided between the side of filter screen 8 and bacterium solution knockout drum conical lower portion
Liquid knockout drum and filtrate receiver generally sealing structure, the bottom of filtrate receiver 9 is provided with filtrate receiver leachate outflow tube 12 and backwash tube
11, the bottom centre position of filter screen 8 is mycelium pellet discharge pipe 10, is opened and closed by Valve controlling, the caliber of mycelium pellet discharge pipe 10 is more than
2cm, to prevent mycelium pellet from blocking pipeline.
The side wall of bacterium solution knockout drum 2 is equipped with side wall leachate outflow tube 7, side wall leachate outflow tube 7 and the second delivery pipe 21
Connection, filtrate receiver leachate outflow tube 12 and the second delivery pipe 21 are converged accesses coagulating sedimentation for a total leachate outflow tube 24
Tank 3, or, filtrate receiver leachate outflow tube 12 and the second delivery pipe 21 are respectively connected to coagulating sedimentation tank 3；Bacterium solution separates pot sidewall
The side wall leachate outflow tube of multiple different heights can be set in vertical direction, each side wall leachate outflow tube has one respectively
Valve controlling；The side wall leachate outflow tube of multiple different heights collects to the second delivery pipe 21.
The top of coagulating sedimentation tank 3 includes the flow pump 19 of medicine storing pot 14 and the 3rd equipped with chemicals dosing plant, the chemicals dosing plant, mixes
Solidifying agent is stored in medicine storing pot 14, squeezes into coagulating sedimentation tank by the 3rd flow pump, the bottom of coagulating sedimentation tank 3 exports provided with sediment
22；
Coagulating sedimentation pot sidewall is connected by the 3rd delivery pipe 25 with the top of leaching tank 4, and leaching tank top is thrown provided with red mud
Add pipe 15, its bottom is provided with red mud residue pipe 17, and side wall is provided with leachate discharge pipe 16.
Agitating device 13 is respectively arranged with inside coagulating sedimentation tank 3 and leaching tank 4, the agitating device 13 is the whirler of vane type
Tool agitator.
Further, first delivery pipe 20, total leachate outflow tube 24, be respectively provided with the 3rd delivery pipe 25 it is first-class
Measure pump 6, second flow pump 18, the 4th flow pump 23.
Each pipeline of the present invention, outlet, valve 5 is provided with entrance, opened or closed to control.
Using said apparatus carry out the contactless bioleaching red mud of batch method be：
(1) sterilizing of culture medium and the fermentation and acid of aspergillus niger are carried out in fermentation tank (1), is specially：
First, culture medium adds in fermentation tank and carries out sterilization treatment, and sterilising conditions are 115~125 DEG C and 102.5~
25~35min of 105kPa sterilizings.The solvent of culture medium is deionized water, and its composition is：Sucrose 5~15%, yeast extract 0.01~
0.02%th, beef extract 0.01~0.02%, KNO30.02~0.05% (mass concentration).
Sterilizing finishes, and treats that tank body cools down, sets ferment tank parameter：32~35 DEG C of temperature, 2.5~2.8mg/ of dissolved oxygen
L, 120~150r/min of mixing speed.Aspergillus niger spore suspension is inoculated in fermentation tank, inoculum concentration is culture medium cumulative volume
1~5 ‰.Fermentation and acid process is in after aspergillus niger inoculation, when the pH of fermentation cylinder for fermentation liquid is less than 2.2, fermentation
Produce sour process to terminate, close fermentation tank.
Aspergillus niger can purchase, and also can voluntarily be separately cultured.Aspergillus niger needs to activate before inoculation：Aspergillus niger spore is inoculated in
Using the saline elution of sterilizing spore suspension is made, aspergillus niger in spore suspension in PDA plate, the spores of growth and maturity
Spore concentration is about 1 × 107~1 × 108Individual/mL.
(2) separation of mycelium pellet and leachate is carried out in bacterium solution knockout drum, is specially：
After the fermentation and acid process of fermentation tank terminates, the fermentation of Aspergillus niger liquid stream containing mycelium pellet enters bacterium solution knockout drum.
Before zymotic fluid flows out bacterium solution knockout drum, the leachate outflow tube valve and mycelium pellet discharge pipe valve of bacterium solution knockout drum are closed
Door.Zymotic fluid stands 120~180min in bacterium solution knockout drum.After bacterium solution layering, lower floor is mycelium pellet, and upper strata is that leaching is red
The leachate of mud.The bacterium solution separation pot sidewall top leachate outflow tube nearest apart from mycelia layers of balls is opened, can also be beaten simultaneously
Other leachate outflow tubes on mycelia layers of balls top are opened, discharge leachate rapidly.The leachate for opening filtrate trench bottom again goes out stream
Pipe, further discharge remaining leachate in bacterium solution knockout drum.After leachate discharge process terminates, mycelium pellet discharge is opened
Pipe, mycelium pellet is discharged from bacterium solution knockout drum.
To prevent miscellaneous bacteria raised growth in leachate from consuming organic acid, the separation process of mycelium pellet and leachate needs quickly
Carry out.
Zymotic fluid after fermentation ends is disposably fully entered in bacterium solution knockout drum, from zymotic fluid enter bacterium solution knockout drum to
The final time control all flowed out is within 240min.
, can be by anti-when bacterium solution knockout drum long operational time causes bottom screen to block, leachate is reduced by efficiency
Flush pipe is backwashed with clear water to filter screen, recovers its water flowing performance, the bacterium rinsed out on the waste water and filter screen after backwash
Silk is together from mycelium pellet discharge pipe discharge system.
The mycelium pellet discharged from bacterium solution knockout drum, because it is not contacted in bioleaching with red mud particle, in bacterium solution
Also cell is damaged without using modes such as mechanical centrifugation or compressions during separation, therefore remains with higher bioactivity
With preferable integrality, can directly recycle, such as the pollution control field for waste water.
(3) the small mycelium and suspension in leachate are further removed in coagulating sedimentation tank, is specially：
Leachate flows out from bacterium solution knockout drum, into coagulating sedimentation tank.The effect of coagulating sedimentation tank is further to remove
Small mycelium and suspension in leachate, avoid small mycelium and leaching stage of the suspension in next step and red mud
Grain contact, in favor of the recycling of red mud.Coagulating sedimentation tank is equipped with chemicals dosing plant and agitating device.Chemicals dosing plant is drug storage
Tank and the 3rd flow pump, coagulant are stored in medicine storing pot, and coagulating sedimentation tank is squeezed into by the 3rd flow pump.Coagulant is polypropylene
Acid amides, solvent are water, and polyacrylamide mass concentration is 3~5%, dosage according to volume for leachate cumulative volume 0.05~
0.1%.Agitating device is the rotating machinery agitator of vane type.
After leachate enters coagulating sedimentation tank, coagulant is added by chemicals dosing plant, opens agitating device, by coagulant and leaching
Filtrate mixes rapidly, and the coagulating time is 20~40min.After coagulating terminates, agitating device is closed, into precipitating
Journey.After standing 30~60min, precipitation process terminates, and supernatant is flowed into leaching tank.The sediment of coagulating sedimentation pot bottom is discharged into plate
The further dewater treatment of frame filter press.
(4) make red mud that acidolysis Leach reaction and the mud liquid separation process of metal ion occur with leachate in leaching tank,
Specially：
Leachate in coagulating sedimentation tank after filtering enters leaching tank, and with leachate in leaching tank metal occurs for red mud
The acidolysis Leach reaction of ion, and mud liquid separation process.Leaching tank stirs equipped with agitating device for the rotating machinery of vane type
Mix device.
Leachate enters in leaching tank, and red mud powder is added into pipe by red mud is added in leaching tank, and red mud powder dosage is pressed
According to 1~10% that quality is leachate quality.Agitating device is opened, red mud powder is well mixed with leachate, acidolysis is leached anti-
6~10h should be carried out.The preparation method of red mud powder：Crossed after red mud drying 60~100 mesh (mesh number is too low be unfavorable for red mud particle with
Organic acid is fully contacted so as to carry out efficient acidolysis Leach reaction in leachate, and mesh number is too high to be unfavorable for subsequent mud liquid separation
Process, it can significantly extend mud liquid disengaging time).
Acidolysis Leach reaction terminates, and closes agitating device, and system enters mud liquid separation process, stands 90~120min, leaching
The supernatant on filter tank top is the leachate of metal ion, and bottom is the red mud residue after leaching.Metal ion leachate
Discharged from the leachate discharge pipe of leaching pot sidewall, precious metal element can be further reclaimed after collection.Red mud residue is from leaching
The red mud residue pipe discharge of pot bottom, because the basicity of red mud residue substantially reduces, radioactive element and heavy metal element etc. have
Evil ion has removed, and red mud particle does not contact with mycelium, therefore is not required to the subsequent treatments such as high temperature incineration, can directly return
Receive and utilize, such as the additive as construction materials such as concrete.
Embodiment：
The aspergillus niger of preservation is activated on PDA plate, the spore of growth and maturity is eluted using the saline of sterilizing,
Spore suspension is made, the spore concentration of aspergillus niger in spore suspension is adjusted to about 1 × 108Individual/mL.
Culture medium is prepared, its composition proportion is (mass concentration)：Sucrose 10%, yeast extract 0.015%, beef extract
0.02%th, KNO30.03%, solvent is deionized water.Culture medium is added in fermentation tank and carries out sterilization treatment.Fermentation tank model
For foreign lattice YGF300/s, dischargeable capacity 20L.It is 121.5 DEG C and 103kPa to adjust fermentation tank sterilizing parameter, and sterilization time is
30min, start fermentation tank.
Tank body cooling is waited after sterilizing, the spore suspension of 50mL aspergillus nigers is inoculated with fermentation tank.By ferment tank
Condition setting is：33 DEG C, dissolved oxygen 2.6mg/L, mixing speed 140r/min of temperature.Fermentation 48h after fermentation liquid pH value is reduced to
2.13, course of fermentation terminates.
Zymotic fluid is pumped into bacterium solution knockout drum.Bacterium solution knockout drum dischargeable capacity 30L, 304 stainless steels are made, and tank surface has
The peephole of glass system.150min is stood, lower floor's mycelium pellet obvious lamination occurs with upper strata leachate, and upper strata leachate becomes
It is as clear as crystal.All the side wall leachate outflow tube valves 19 and second flow pump 25 on mycelia layers of balls top are opened, discharge leaching
Liquid is to coagulating sedimentation tank.Then bacterium solution knockout drum bottom filtrate receiver leachate outflow tube 12 is opened, further filters out leachate extremely
Coagulating sedimentation tank.When there is no leachate inflow in coagulating sedimentation tank, the mycelium pellet discharge pipe of bacterium solution knockout drum bottom, row are opened
The mycelium pellet gone out in bacterium solution knockout drum.
Coagulating sedimentation tank dischargeable capacity is 30L, and material is 304 stainless steels.Open the 3rd flow pump 26 of coagulating sedimentation tank
To put into coagulant, coagulant dosage total amount is 24mL, while opens agitating device.Coagulant polyacrylamide and deionization
Water is made, concentration of polyacrylamide 4%.Agitating device is closed after stirring 30min, stands 50min.By coagulating sedimentation tank upper strata
Limpid leachate is discharged into leaching tank.Coagulating sedimentation pot bottom residue is discharged into plate and frame filter press and carries out dewater treatment.
100 mesh are crossed after red mud drying, 900mg red mud powders are then added in leaching tank.Agitating device is opened, after stirring 8h
Close agitating device.120min is stood, by the metal ion leachate on leaching tank top from leachate discharge pipe discharge system, is used
Cord blood after container collection, in case next recovery precious metal element.Then by the red mud residue of leaching tank bottom from red
Mud residue pipe discharge system.
After the detection such as ICP-OES, ICP-MS and XRF and calculating, the metal ion leaching efficiency measured in red mud is：
Al is 51.1%, Ti 43.9%, Fe 19.0%, Sc 66.3%, Ga 28.5%, Ge 42.4%, V 30.4%,
La is 24.6%.
The above described is only a preferred embodiment of the present invention, not doing any formal limitation to the present invention, appoint
What those skilled in the art, without departing from the scope of the present invention, is made a little using above-mentioned technology contents
Change or the embodiment of modification, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of device of the contactless bioleaching red mud of batch, it is characterised in that including fermentation tank (1), bacterium solution knockout drum
(2), coagulating sedimentation tank (3) and leaching tank (4), wherein, fermentation tank (1) bottom passes through the first delivery pipe (20) and bacterium solution knockout drum
(2) top connects, and bacterium solution knockout drum (2) bottom is tapered, is provided with filter screen (8) in the conical lower portion, filter screen (8) separates with bacterium solution
The filtrate receiver (9) for collecting leachate is provided between the side of tank conical lower portion, bacterium solution knockout drum generally seals knot with filtrate receiver
Structure, filtrate receiver (9) bottom are provided with filtrate receiver leachate outflow tube (12) and backwash tube (11), filter screen (8) bottom centre position
For mycelium pellet discharge pipe (10), bacterium solution knockout drum (2) side wall is equipped with side wall leachate outflow tube (7), side wall leachate outflow tube
(7) it is connected with the second delivery pipe (21), filtrate receiver leachate outflow tube (12) and the second delivery pipe (21) are converged for a total leaching
Filtrate outflow tube (24) access coagulating sedimentation tank (3), or, filtrate receiver leachate outflow tube (12) and the second delivery pipe (21) point
Jie Ru not coagulating sedimentation tank (3)；
Include medicine storing pot (14) and the 3rd flow pump (19) equipped with chemicals dosing plant, the chemicals dosing plant at the top of coagulating sedimentation tank (3),
Coagulant is stored in medicine storing pot (14), squeezes into coagulating sedimentation tank by the 3rd flow pump, coagulating sedimentation tank (3) bottom is provided with sediment
Export (22)；
Coagulating sedimentation pot sidewall by the 3rd delivery pipe (25) with being connected at the top of leaching tank (4), provided with red mud throw by leaching tank top
Add pipe (15), its bottom is provided with red mud residue pipe (17), and side wall is provided with leachate discharge pipe (16), coagulating sedimentation tank (3) and leaching
Agitating device (13) is respectively arranged with inside filter tank (4).
A kind of 2. device of the contactless bioleaching red mud of batch as claimed in claim 1, it is characterised in that the bacterium solution
The side of knockout drum conical lower portion and the side of filter screen and horizontal plane are in 30~60 ° of angles；
The filter pore size of the filter screen is 0.075~0.125mm；
The caliber of the mycelium pellet discharge pipe (10) is more than 2cm.
A kind of 3. device of the contactless bioleaching red mud of batch as claimed in claim 1, it is characterised in that the bacterium solution
Separate the side wall leachate outflow tube that pot sidewall vertical direction is provided with multiple different heights, each side wall leachate outflow tube point
There is not a Valve controlling；The side wall leachate outflow tube of multiple different heights collects to the second delivery pipe (21)；
The agitating device (13) is the rotating machinery agitator of vane type；
First delivery pipe (20), total leachate outflow tube (24), first flow pump is respectively provided with the 3rd delivery pipe (25)
(6), second flow pump (18), the 4th flow pump (23).
4. a kind of method that the contactless bioleaching red mud of batch is carried out using device as claimed in claim 1, its feature are existed
In comprising the following steps：
(1) sterilizing of culture medium and the fermentation and acid of aspergillus niger are carried out in fermentation tank (1), is specially：
Aspergillus niger spore is inoculated in PDA plate, spore is made using the saline elution of sterilizing in the spore of growth and maturity
Suspension；
Culture medium is added in fermentation tank and carries out sterilization treatment, sterilizing finishes, and treats that tank body cools down, sets ferment tank parameter；
Aspergillus niger spore suspension is inoculated in fermentation tank, inoculum concentration according to volume be culture medium cumulative volume 1~5 ‰, fermentation and acid
Process is in after aspergillus niger inoculation, and when the pH of fermentation cylinder for fermentation liquid is less than 2.2, fermentation and acid process terminates, and closes
Close fermentation tank；
(2) separation of mycelium pellet and leachate is carried out in bacterium solution knockout drum, is specially：
The fermentation of Aspergillus niger liquid containing mycelium pellet as caused by fermentation tank is sent into bacterium solution knockout drum by the first delivery pipe (20),
Zymotic fluid stands 120~180min in bacterium solution knockout drum, and after bacterium solution layering, lower floor is mycelium pellet, and upper strata is leaching red mud
Leachate, the side wall leachate outflow tube positioned at mycelium pellet layer top is opened, discharges leachate rapidly, then open filtrate receiver
The filtrate receiver leachate outflow tube of bottom further discharges remaining leachate in bacterium solution knockout drum, side wall leachate outflow tube and
Woods filtrate in filtrate receiver leachate outflow tube is discharged into coagulating sedimentation tank, after leachate discharge process terminates, opens mycelia
Ball discharge pipe, mycelium pellet is discharged from bacterium solution knockout drum；
When bacterium solution knockout drum long operational time causes bottom screen to block, leachate is reduced by efficiency, pass through backwash tube
Filter screen is backwashed with clear water, recovers its water flowing performance, the waste water after backwash is together with the mycelia rinsed out on filter screen
From mycelium pellet discharge pipe discharge system；
(3) the small mycelium and suspension in leachate are further removed in coagulating sedimentation tank, is specially：
Coagulant is added by the chemicals dosing plant being equipped with coagulating sedimentation tank, opens agitating device, coagulant is fast with leachate
Speed mixing, the coagulating time is 20~40min；After coagulating terminates, agitating device is closed, into precipitation process, is stood
After 30~60min, precipitation process terminates, and supernatant is sent into leaching tank by the 3rd delivery pipe, coagulating sedimentation pot bottom sinks
Slag is discharged into the further dewater treatment of plate and frame filter press by sediment outlet；
(4) make red mud that acidolysis Leach reaction and the mud liquid separation process of metal ion occur with leachate in leaching tank, specifically
For：
After leachate enters in leaching tank, red mud powder is added into pipe by red mud and added in leaching tank, red mud powder is according to quality
Dosage be leaching tank in leachate quality 1~10%；Agitating device is opened, red mud powder is well mixed with leachate,
Acidolysis Leach reaction carries out 6~10h；Acidolysis Leach reaction terminates, and closes agitating device, system enters mud liquid separation process, quiet
90~120min is put, the supernatant on leaching tank top is the leachate of metal ion, and bottom is the red mud residue after leaching；
Metal ion leachate is discharged from the leachate discharge pipe of leaching pot sidewall, and further recovery precious metal is first after collection
Element；Red mud residue is discharged from the red mud residue pipe of leaching pot bottom, is directly recycled.
A kind of 5. method of the contactless bioleaching red mud of batch as claimed in claim 4, it is characterised in that step (1) spore
Aspergillus niger spore concentration is 1 × 10 in sub- suspension7~1 × 108Individual/mL；
The sterilising conditions of culture medium are 115~125 DEG C, 102.5~105kPa sterilizings, 25~35min；The solvent of culture medium is to go
Ionized water, its composition are according to mass concentration：Sucrose 5~15%, yeast extract 0.01~0.02%, beef extract 0.01~
0.02%th, KNO30.02~0.05%；
Ferment tank parameter is arranged to：32~35 DEG C, 2.5~2.8mg/L of dissolved oxygen, 120~150r/ of mixing speed of temperature
min。
A kind of 6. method of the contactless bioleaching red mud of batch as claimed in claim 4, it is characterised in that zymotic fluid from
Time control into bacterium solution knockout drum to final all outflows bacterium solution knockout drum is in 240min.
7. a kind of method of the contactless bioleaching red mud of batch as claimed in claim 4, it is characterised in that step (3) is stored up
Coagulant in medicinal cupping is polyacrylamide solution, and solvent is water, and the mass concentration of polyacrylamide is 3~5%, and coagulant is pressed
Dosage according to volume is 0.05~0.1% of leachate cumulative volume in coagulating sedimentation tank.
8. a kind of method of the contactless bioleaching red mud of batch as claimed in claim 4, it is characterised in that in step (4)
The red mud powder is that 60~100 mesh sieves are crossed after red mud is dried.
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| CN113582485A (en) * | 2021-07-14 | 2021-11-02 | 浙江大学 | Bioleaching method and equipment for separating acid production and heavy metal removal process |
| CN114196833A (en) * | 2021-12-17 | 2022-03-18 | 中南大学 | Method for promoting leaching of valuable metals in red mud by using sulfur oxidation of acidophilic microorganisms |
| CN115818912A (en) * | 2022-11-01 | 2023-03-21 | 中南大学 | Method for biological dealkalization of red mud by coupling microbial fermentation acid production with red mud |
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|---|---|
| CN107739824B (en) | 2023-12-22 |
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