CN103706460B - Bauxite desulphurization method and device - Google Patents

Bauxite desulphurization method and device Download PDF

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CN103706460B
CN103706460B CN201310669211.XA CN201310669211A CN103706460B CN 103706460 B CN103706460 B CN 103706460B CN 201310669211 A CN201310669211 A CN 201310669211A CN 103706460 B CN103706460 B CN 103706460B
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desulfurization
groove
ore
bioleaching
bauxite
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CN201310669211.XA
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CN103706460A (en
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陈湘清
李花霞
吴国亮
张建强
周杰强
马俊伟
刘晰
李素敏
陈占华
郭鑫
胡秋云
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中国铝业股份有限公司
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Abstract

The invention relates to a bauxite desulphurization method and device, in particular to a chemo-biological desulphurization method and device of high sulfur bauxite. The method is characterized in that the desulphurization process includes the steps of 1, adding chemical desulfurizing agent to perform chemical desulphurization; 2, inoculating bio-leached strain to perform bio-leaching desulphurization; 3, after bio-leaching desulphurization, filtering and washing ore pulp to obtain aluminum concentrate. The bauxite desulphurization method and device has the advantages that operation is simple, recovery rate of aluminum oxide can be significantly increased, industrial production can be more continuous and stable, investment and operation costs in high sulfur bauxite desulphurization are reduced, and high sulfur bauxite can be industrially desulfurized.

Description

A kind of sulfur method of bauxite and device
Technical field
A kind of sulfur method of bauxite and device, particularly to a kind of chemical desulfurization of high-sulfur bauxite and biological desulphurization Method and device.
Background technology
High-sulfur bauxite is the important potential available resources of aluminum i ndustry, accounts for large percentage in Chinese bauxite resource, main Gui Xi to be distributed in, South-east of Yunnan, in Guizhou Province, Qian Bei, Henan west and the river southeast, E Bei and middle areas in Shandong Province.According to statistics, verified high-sulfur alum clay Ore reserves more than 8.0 hundred million tons, about 2,000,000,000 tons of prospective reserves.Main sulfide mineral in high-sulfur bauxite is deposited with pyrite form Contain its allotrope marcasite and magnetic iron ore simultaneously, in part high-sulfur bauxite, contain a certain amount of sulfate.
Sulphur in bauxite is serious to alumina producing harm, causes corrosion pipeline and equipment;Deteriorate red-mud settlement performance; Reduce evaporation efficiency;Alkaline consumption raises;The problems such as product quality declines, is therefore directed to high-sulfur bauxite production aluminum oxide and has carried out greatly Desulfurization in quantifier elimination work, predominantly floatation desulphurization and aluminum oxide flow process.
Patent 201110372208.2,201010587696.4,200810190801.3,200810072347.1 employings Floatation removes the sulphur in high-sulfur bauxite, and mainly using xanthate collectors makes containing sulfur minerals float, and reaches desulfurization purpose. But existing high-sulfur bauxite floatation desulphurization method can because in ore pyrite inevitably aoxidize acidifying and bauxite Matter characteristic makes flotation effect be affected.Floatation desulphurization investment simultaneously is big, its agitation impeller flotator used or on-mechanical Agitation type flotation machine (containing flotation column) energy consumption is big, and production cost is higher.Using floatation desulfurization, the rate of recovery of aluminum oxide in ore Generally 90% about.
Patent 03135157.3,200810230200.0 adopts desulfurization and desulfurization with roasting technique method in aluminum oxide flow process, oxidation In aluminium flow process, desulfurization and desulfurization with roasting technique are generally only capable of processing the relatively low high-sulfur bauxite of sulfur content, and processing cost is higher, at present There is not yet the method produces the large-scale industrial application of aluminum oxide in high-sulfur bauxite.In addition, desulfurization with roasting technique can produce a certain amount of So2Gas, affects to environment.
The Bioleaching of high-sulfur bauxite has small investment, and resource utilization is high, the advantage such as environmental friendliness, but existing sulfuration Ore deposit Leaching way and leaching device can not meet the needs of high-sulfur bauxite Bioleaching desulfurization, and its main cause is high-sulfur alum clay Ore deposit belongs to oxidized ore, and conventional sulphide ore Bioleaching mode processes high-sulfur bauxite hardened, the leaching efficiency that can there is ore Low problem.
Content of the invention
The purpose of the present invention is aiming at the problem that above-mentioned technology exists, and provides one kind can effectively improve desulfuration efficiency and oxygen Change aluminium recovery, simplify operation, realize the sulfur method of bauxite and device that high-sulphur alumyte desulfuration industrializes steady production.
The purpose of the present invention is achieved through the following technical solutions.
A kind of sulfur method of bauxite is it is characterised in that the step of its sweetening process includes: (1) adds chemical desulfurization agent Carry out chemical desulfurization;(2) inoculate Bioleaching bacterial classification, carry out Bioleaching desulfurization;(3) after Bioleaching desulfurization, slurry filtration is washed After washing. obtain aluminium concentrate.
A kind of sulfur method of bauxite of the present invention is it is characterised in that described step (1) is by the ore grinding of bauxite Fineness accounts for 65%-85% for -0.075mm, adds chemical desulfurization agent, and holding the blowing pressure is 0.03-0.3mpa, carries out chemistry de- Sulphur, after one section of chemical desulfurization, underflow is more than to ore pulp mog -0.075mm proportion through cyclone classification secondary grinding Equal to 90%.
A kind of sulfur method of bauxite of the present invention is it is characterised in that described step (2) is by after secondary grinding The qualified ore pulp inoculation Bioleaching bacterial classification of fineness, adjusting ore pulp ph value is 2.0-3.0, and holding the blowing pressure is 0.02- 0.2mpa, carries out Bioleaching desulfurization at a slow speed, and the biological desulphurization time was more than or equal to 24 hours at a slow speed.
A kind of sulfur method of the bauxite of the present invention it is characterised in that after to Bioleaching desulfurization bauxite carried out Filter, washing after, filtered fluid a part return as leach strain liquid, another part and cleaning solution mixing after through extract sulfate radical and It is neutral water after neutralization, this neutral water returns the washing for ore after ore grinding, chemical desulfurization and Bioleaching.
A kind of sulfur method of the bauxite of the present invention, its chemical desulfurization agent be butyl xanthate or Isobutylxanthic acid or the two Mixture and terpenic oil, process conditions are: butyl xanthate or Isobutylxanthic acid or the mixture of the two, and addition is 80-200g/ T does ore deposit, and terpenic oil addition does ore deposit for 40-100g/t, and ore pulp ph value is ore pulp ph value original after ore grinding;Bioleaching bacterial classification is Thiobacillus ferrooxidans or ferrous oxide hook end spirillum, process conditions are: pulp density 10%-30%, ore pulp ph value 2.0- 3.0.
A kind of desulfurizer of the sulfur method of bauxite of the present invention it is characterised in that described device by groove body, overflow Chute, overflow outlet, feeding mouth, eddy flow feeder, slip nozzle, gas distributor, air inlet pipe, discharging opening composition.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that the groove body material of described device Surface acid-proof, is lucite, acid-proof steel, armored concrete, or common iron appearance applies acid-proof material.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that the groove body of described device is by upper Portion's cylinder and lower cone body connect, and groove body total height is less than or equal to 10m, its cylinder and cone height ratio for 5:1-1:2, Groove body inside diameter is 0.5m or more than 0.5m.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that the overflow launder of described device is located at Groove body upper outside, its bottom highs and lows line, horizontal by 5 ° ~ 25 °, has bubble outside overflow launder minimum point Foam exports.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that the feeding mouth of described device and rotation Flow into glassware to connect, can feed from groove body upper vertical, also can laterally feed, also can be from bottom feed.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that described device ore pulp passes through eddy flow It is injected in groove from the slip nozzle with eddy flow feeder plane tangent after feeder, slip nozzle inside diameter is 3mm-50mm, Nozzle number is 2 or more than 2.
A kind of desulfurizer of the sulfur method of bauxite of the present invention is it is characterised in that described device is from groove body bottom The air inlet pipe of cone base air inlet is connected with gas distributor, and gas distributor is in ring net distribution is higher than the internal 10mm- of cone 100mm, and increase therewith with cone rising looped network, gas distributor looped network pipeline drives at interval of 20mm ~ 200mm distance Pore, all of air admission hole is provided with check (non-return) valve.
A kind of desulfurizer of the sulfur method of bauxite of the present invention it is characterised in that described device be multiple in parallel or It is connected in series using or be used alone.
A kind of desulfurizer of the sulfur method of bauxite of the present invention, for high-sulphur alumyte desulfuration, can be carried out simultaneously Rapid chemical desulfurization and Bioleaching desulfurization, add chemical desulfurization agent, ore pulp and chemistry after ore grinding during quick one section of chemical desulfurization Desulfurizing agent passes through feeding mouth pan feeding simultaneously, and gas distributor, from bottom inflatable, carries out atm number rapid chemical desulfurization, sulfur mineral from Groove body top is spilled in overflow launder, and exports discharge by overflow launder.After rapid chemical desulfurization, ore pulp, after secondary grinding, connects After planting Bioleaching bacterial classification, groove body is entered through feeding mouth and eddy flow feeder by ore slurry pump, obtain under certain feeding pressure Obtain centrifugal force, form spin, ore deposit, air-liquid three-phase strengthening mass transfer are realized in the inflation of bottom gas distributor, prevent settling ore pulp compression With hardened, carry out the Bioleaching desulfurization at a slow speed of low tolerance, because, under higher mog, sulfur mineral fully dissociates out, makes Bioleaching efficiency significantly improves.
A kind of high-sulphur alumyte desulfuration method and device of the present invention, simple to operate, and returning of aluminum oxide can be significantly improved Yield, improves industrial stability, reduces high-sulphur alumyte desulfuration cost of investment and operating cost, realizes high The industrialized production of sulphur alumyte desulfuration.
Brief description
Fig. 1 is apparatus of the present invention structure cross-sectional schematic (top charging).
Fig. 2 is apparatus of the present invention structure cross-sectional schematic (lateral charging).
Fig. 3 is apparatus of the present invention structure cross-sectional schematic (bottom feed).
Fig. 4 is apparatus of the present invention upper vertical charging pan feeding system architecture top view.
Fig. 5 is apparatus of the present invention gas distributor top view.
Fig. 6 is the process chart based on the inventive method for the inventive method.
Specific embodiment
A kind of sulfur method of high-sulfur bauxite and device, described device structure includes: groove body (1), overflow launder (2), Overflow outlet (3), feeding mouth (4), eddy flow feeder (5), slip nozzle (6), gas distributor (7), air inlet pipe (8), discharging Mouth (9).Groove body (1) the material surface acid-proof of described device, can be lucite, acid-proof steel, armored concrete, or general Logical steel appearance applies acid-proof material;The groove body (1) of described device is connected by upper cylinder and lower cone body, groove body (1) total height is 3m-10m, and for 5:1-1:2, groove body (1) inside diameter is 1m or more than 1m to its cylinder and cone height ratio; The foam tank (2) of described device is located at groove body (1) upper outside, and its bottom highs and lows line is horizontal by 5 ° ~ 25 °, outside foam tank (2) minimum point, there is foam outlet (3);Even (5) connect for the feeding mouth (4) of described device and eddy flow feeder, Can feed from groove body (1) upper vertical, also can laterally feed, also can be from bottom feed;Described device ore pulp is entered by eddy flow It is injected in groove from the slip nozzle (6) with eddy flow feeder (5) plane tangent after glassware (5), slip nozzle (6) internal diameter is 12mm-50mm, slip nozzle (6) number is 2 or more than 2;Described device is from groove body (1) bottom cone bottom inflow Air inlet pipe (8) is connected with gas distributor (7), and gas distributor (7) is in ring net distribution is higher than the internal 50mm-100mm of cone, And increase therewith with cone rising looped network, gas distributor (7) looped network pipeline drives gas at interval of 50mm ~ 200mm distance Hole, all of air admission hole is provided with check (non-return) valve.Described device multiple can connect using or be used alone in parallel or series.
For high-sulphur alumyte desulfuration, rapid chemical desulfurization and Bioleaching desulfurization, quick one section of chemistry can be carried out simultaneously Add chemical desulfurization agent, ore pulp and chemical desulfurization agent after ore grinding passes through feeding mouth pan feeding simultaneously, and gas distributor is the bottom of from during desulfurization Portion inflates, and carries out atm number rapid chemical desulfurization, sulfur mineral is spilled over to overflow launder from groove body top, and is exported by overflow launder Discharge.After rapid chemical desulfurization, ore pulp, after secondary grinding, passes through ore slurry pump through feeding mouth and rotation after inoculation Bioleaching bacterial classification Flow into glassware and enter groove body, under certain feeding pressure, obtain centrifugal force, form spin, the inflation of bottom gas distributor is real Existing ore deposit, air-liquid three-phase strengthening mass transfer, prevent settling ore pulp compression and hardened, carry out the Bioleaching desulfurization at a slow speed of low tolerance, because Under higher mog, sulfur mineral fully dissociates out, so that Bioleaching efficiency is significantly improved.
A kind of high-sulphur alumyte desulfuration method and device of the present invention, simple to operate, and returning of aluminum oxide can be significantly improved Yield, improves industrial stability, reduces high-sulphur alumyte desulfuration cost of investment and operating cost, realizes high The industrialized production of sulphur alumyte desulfuration.
Embodiment 1
With under the coal of Henan somewhere, high-sulfur bauxite is shown in Table 1 for testing sample ore, the chemical constituent table of ore.
High-sulfur bauxite under table 1 Henan somewhere coal
Composition al2o3 sio2 fe2o3 tio2 k2o na2o cao mgo s c Cut down according to the circumstance
Content/% 63.46 12.35 2.64 2.96 1.10 0.025 0.81 0.25 1.21 1.80 13.40
Experiment process is passed through 2 described equipments for one section of rapid chemical desulfurization underflow parallel connection and carries out Bioleaching desulfurization.
Technological parameter: rapid chemical desulfurization mog is 78%-200 mesh, ore pulp nature ph value, chemical desulfurization agent consumption 400g/t, desulfurization temperature is normal temperature;Chemical desulfurization underflow enters two sections of mills through discharging opening, is 92% -200 mesh to mog, Enter after stirring is led to and inoculate Thiobacillus ferrooxidans, adjusting ore pulp ph value is 2.5, is delivered to 2 described devices of parallel connection with pump Carry out Bioleaching desulfurization,
Rig for testing:
Device for rapid chemical desulfurization: groove body inside diameter 1.5m, groove body material is steel, and inwall applies acid-proof Layer, groove body total height is 4.1m, and for 1.5:1, overflow launder position bottom highs and lows are even for its cylinder and cone height ratio Horizontal by 10 °, feeding mouth feeds line from groove body sidepiece, and slip nozzle inside diameter is 18mm, and nozzle number is 3, uniformly It is distributed on circumference, gas distributor is in ring net distribution is higher than the internal 30mm of cone, every on gas distributor looped network pipeline Drive pore every 50mm into, single groove rapid chemical desulfurization, pan feeding ore deposit presses 0.15mpa, the blowing pressure 0.3mpa.
2 devices for Bioleaching desulfurization: groove body inside diameter 4.5m, groove body material is steel, and inwall applies Anti- acid layer, groove body total height is 7.5m, and its cylinder and cone height ratio is for 3:1, overflow launder position bottom highs and lows Horizontal by 10 °, feeding mouth feeds line from groove body sidepiece, and slip nozzle inside diameter is 16mm, and nozzle number is 6, all Even be distributed on circumference, gas distributor is in ring net distribution is higher than the internal 50mm of cone, every on gas distributor looped network pipeline Interval 100mm drives pore into, and pan feeding ore deposit presses 0.10mpa, the blowing pressure 0.15mpa.After Bioleaching desulfurization, bauxite was carried out Filter, washing after be low-sulfur bauxite, filtered fluid a part return as leach strain liquid, another part and cleaning solution mixing after warp It is neutral water after extracting sulfate radical and neutralization, this neutral water returns for the washing of ore after ore grinding, chemical desulfurization and Bioleaching Wash.
1.5m internal diameter list groove rapid chemical desulfurization continuously runs, switching underflow corresponding 4.5m internal diameter biology leaching in every 24 hours Go out desulfurizer it is ensured that single groove Bioleaching time is 24h.Continuous operation 168h, average process index is shown in Table 2.
High-sulphur alumyte desulfuration result of the test under table 2 Henan somewhere coal
Product Yield/% S grade/%
Raw ore 100.00 1.21
Rapid chemical desulfurization underflow 96.51 0.46
Low-sulfur aluminium concentrate 96.02 0.25
Embodiment 2
It is shown in Table 3 with Zun Yi somewhere high-sulfur bauxite for testing sample ore, the chemical constituent table of ore.
Table 3 Zun Yi somewhere high-sulfur bauxite
Composition al2o3 sio2 fe2o3 tio2 k2o na2o cao mgo s Cut down according to the circumstance
Content/% 65.61 7.97 6.19 2.88 1.22 0.04 0.13 0.14 1.63 13.79
Experiment process is passed through 4 described equipments for one section of rapid chemical desulfurization underflow parallel connection and carries out Bioleaching desulfurization.
Technological parameter: rapid chemical desulfurization mog is 65%-200 mesh, ore pulp nature ph value, chemical desulfurization agent consumption 300g/t, desulfurization temperature is normal temperature;Chemical desulfurization underflow enters two sections of mills through discharging opening, is 90% -200 mesh to mog, Enter after stirring is led to and inoculate Thiobacillus ferrooxidans, adjusting ore pulp ph value is 2.0, is delivered to 4 described devices of parallel connection with pump Carry out Bioleaching desulfurization,
Rig for testing:
Device for rapid chemical desulfurization: groove body inside diameter 0.5m, groove body material is lucite, groove body Total height is 1.5m, its cylinder and cone height ratio for 2:1, overflow launder position bottom highs and lows line horizontal by 15 °, feeding mouth feeds from groove body sidepiece, and slip nozzle inside diameter is 12mm, and nozzle number is 3, is uniformly distributed on circumference, Gas distributor is in ring net distribution is higher than the internal 15mm of cone, and gas distributor looped network pipeline drives gas at interval of 30mm Hole, single groove rapid chemical desulfurization, pan feeding ore deposit presses 0.10mpa, the blowing pressure 0.2mpa.
4 devices for Bioleaching desulfurization: groove body inside diameter 1.5m, groove body material is steel, and inwall applies Anti- acid layer, groove body total height is 4.1m, its cylinder and cone height ratio for 1.5:1, overflow launder position bottom peak and minimum Horizontal by 10 °, feeding mouth feeds point line from groove body sidepiece, and slip nozzle inside diameter is 18mm, and nozzle number is 3, It is uniformly distributed on circumference, gas distributor is in ring net distribution is higher than the internal 30mm of cone, on gas distributor looped network pipeline Drive pore at interval of 50mm into, pan feeding ore deposit presses 0.08mpa, the blowing pressure 0.10mpa.After Bioleaching desulfurization, bauxite was carried out Filter, washing after be low-sulfur bauxite, filtered fluid a part return as leach strain liquid, another part and cleaning solution mixing after warp It is neutral water after extracting sulfate radical and neutralization, this neutral water returns for the washing of ore after ore grinding, chemical desulfurization and Bioleaching Wash.
0.5m internal diameter list groove rapid chemical desulfurization continuously runs, switching underflow corresponding 1.5m internal diameter biology leaching in every 24 hours Go out desulfurizer it is ensured that single groove Bioleaching time is 48h.Continuous operation 168h, average process index is shown in Table 4.
Table 4 Zun Yi somewhere high-sulphur alumyte desulfuration result of the test
Product Yield/% S grade/%
Raw ore 100.00 1.63
Rapid chemical desulfurization underflow 97.26 0.35
Low-sulfur aluminium concentrate 96.89 0.21

Claims (2)

1. a kind of sulfur method of bauxite is it is characterised in that the step of sweetening process includes:
Step (1): add chemical desulfurization agent and carry out chemical desulfurization;
Step (2): inoculation Bioleaching bacterial classification, carry out Bioleaching desulfurization;
Step (3): after slurry filtration washing after Bioleaching desulfurization, obtain aluminium concentrate;
Sweetening process adopt desulfurizer structure include: groove body (1), overflow launder (2), overflow outlet (3), feeding mouth (4), Eddy flow feeder (5), slip nozzle (6), gas distributor (7), air inlet pipe (8), discharging opening (9);The groove body of described device (1) material surface acid-proof, is that lucite, acid-proof steel, armored concrete or common iron appearance apply acid-proof material;Described dress The groove body (1) put is connected by upper cylinder and lower cone body, and groove body (1) total height is 3m-10m, its cylinder and cone Body aspect ratio is 5:1-1:2, and groove body (1) inside diameter is 1m or more than 1m;The overflow launder (2) of described device is located at groove body (1) upper outside, its bottom highs and lows line, horizontal by 5 ° ~ 25 °, has excessive outside overflow launder (2) minimum point Flow export (3);The feeding mouth (4) of described device is connected with eddy flow feeder (5), can feed from groove body (1) upper vertical, Can laterally feed, also can be from bottom feed;Described device ore pulp pass through eddy flow feeder (5) after from eddy flow feeder (5) table The tangent slip nozzle (6) in face is injected in groove, and slip nozzle (6) internal diameter is 12mm-50mm, and slip nozzle (6) number is 2 More than individual;Described device is connected with gas distributor (7) from the air inlet pipe (8) of groove body (1) bottom cone bottom inflow, gas Distributor (7) is in ring net distribution is higher than the internal 50mm-100mm of cone, and increases therewith with cone rising looped network, divides in gas Pore is driven at interval of 50mm ~ 200mm distance, all of air admission hole is provided with check (non-return) valve on cloth device (7) looped network pipeline;
Using described desulfurizer sweetening process it is: during chemical desulfurization, add chemical desulfurization agent, ore pulp and chemical desulfurization after ore grinding Feeding mouth (4) pan feeding is passed through in agent simultaneously, and gas distributor (7), from bottom inflatable, carries out atm number rapid chemical desulfurization, sulfur mineral It is spilled over to overflow launder (2) from groove body (1) top, and discharged by overflow outlet (3);After chemical desulfurization, ore pulp is through secondary grinding Afterwards, groove body (1) is entered through feeding mouth (4) and eddy flow feeder (5) by ore slurry pump, certain after inoculation Bioleaching bacterial classification Feeding pressure under obtain centrifugal force, formed spin, bottom gas distributor (7) inflation realize ore deposit, air-liquid three-phase strengthening pass Matter, prevents settling ore pulp from compressing and hardened, carries out the Bioleaching desulfurization at a slow speed of low tolerance;
Wherein, chemical desulfurization is that for -0.075mm, the mog of bauxite is accounted for 65%-85%, adds chemical desulfurization agent, keeps The blowing pressure is 0.03-0.3mpa, carries out chemical desulfurization, after chemical desulfurization, underflow is through cyclone classification secondary grinding to ore pulp Mog -0.075mm proportion is more than or equal to 90%;
Bioleaching desulfurization is that ore pulp qualified for fineness after secondary grinding is inoculated Bioleaching bacterial classification, adjusts ore pulp ph value and is 2.0-3.0, holding the blowing pressure be 0.02-0.2mpa, carry out Bioleaching desulfurization at a slow speed, at a slow speed the biological desulphurization time be more than etc. In 24 hours;
Chemical desulfurization agent is butyl xanthate or Isobutylxanthic acid or the two mixture and terpenic oil, and process conditions are: butyl xanthate Or Isobutylxanthic acid or the mixture of the two, addition is the dry ore deposit of 80-200g/t, and terpenic oil addition is that 40-100g/t does ore deposit, Ore pulp ph value is ore pulp ph value original after ore grinding;Bioleaching bacterial classification is Thiobacillus ferrooxidans or ferrous oxide hook end spiral Bacterium, process conditions are: pulp density 10%-30%, ore pulp ph value 2.0-3.0.
2. the sulfur method of bauxite according to claim 1 is it is characterised in that in step (3), taking off to Bioleaching After bauxite carries out filtering, washs after sulphur, obtain aluminium concentrate, a filtered fluid part returns as leaching strain liquid, another part Through extracting sulfate radical and being neutral water after neutralizing, this neutral water returns for ore grinding, chemical desulfurization and life with after cleaning solution mixing The washing of ore after thing leaching.
CN201310669211.XA 2013-12-11 2013-12-11 Bauxite desulphurization method and device CN103706460B (en)

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CN105400560A (en) * 2015-11-25 2016-03-16 广西阔能霸能源科技开发有限责任公司 Biological desulfurization method
CN105505512A (en) * 2015-11-25 2016-04-20 广西阔能霸能源科技开发有限责任公司 Microbial desulfurization method for coal
CN105368527A (en) * 2015-11-25 2016-03-02 广西阔能霸能源科技开发有限责任公司 Environmental-protection biological desulfurization process
CN105505513A (en) * 2015-11-25 2016-04-20 广西阔能霸能源科技开发有限责任公司 High-efficiency biological desulfurization technology
CN105368528A (en) * 2015-11-25 2016-03-02 广西阔能霸能源科技开发有限责任公司 Biological desulfurization method for coal
CN105505514A (en) * 2015-11-25 2016-04-20 广西阔能霸能源科技开发有限责任公司 Biological desulfurization technology used for coal
CN106076609B (en) * 2016-08-16 2018-07-03 绍兴曹龙纺织品有限公司 Mine spiral is to barrel
CN107557106A (en) * 2017-09-29 2018-01-09 济南大学 A kind of coal bio-desulfurization device and its application method

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CN201906658U (en) * 2010-12-03 2011-07-27 中国有色(沈阳)冶金机械有限公司 Airflow foaming device with flotation column
CN102228869B (en) * 2011-04-14 2012-12-05 昆明理工大学 Flotation method for desulfurization and desilication of high-silicon bauxite
CN103128003A (en) * 2011-12-05 2013-06-05 沈阳铝镁设计研究院有限公司 High-sulfur bauxite comprehensive utilization method

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