CN103706460A - Bauxite desulphurization method and device - Google Patents
Bauxite desulphurization method and device Download PDFInfo
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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
Technical field
The sulfur method of bauxite and a device, particularly a kind of chemical desulfurization of high-sulfur bauxite and the method for biological desulphurization and device.
Background technology
High-sulfur bauxite is the important potential available resources of aluminium industry, in Chinese bauxite resource, accounts for large percentage, is mainly distributed in Gui Xi, South-east of Yunnan, Guizhou Province, Qian Bei, west, Henan and the southeast, river, E Bei and middle areas in Shandong Province.According to statistics, verify high-sulfur bauxite reserves and surpassed 8.0 hundred million tons, approximately 2,000,000,000 tons of prospective reserves.Main sulfide mineral in high-sulfur bauxite exists with pyrite form, contains its allotrope marcasite and magnetic iron ore simultaneously, contains a certain amount of sulfate in part high-sulfur bauxite.
Sulphur in bauxite is serious to alumina producing harm, causes corrosion pipeline and equipment; Worsen red-mud settlement performance; Reduce evaporation efficiency; Alkaline consumption raises; Degradation problem under product quality, therefore produces aluminium oxide for high-sulfur bauxite and has carried out a large amount of research work, is mainly desulfurization in floatation desulphurization and aluminium oxide flow process.
Patent 201110372208.2,201010587696.4,200810190801.3,200810072347.1 adopt floatation to remove the sulphur in high-sulfur bauxite, are mainly to utilize xanthate collectors to make containing sulfur minerals floating, reach desulfurization object.But existing high-sulfur bauxite floatation desulphurization method can inevitably be oxidized acidifying and bauxite character characteristic is affected flotation effect because of pyrite in ore.Floatation desulphurization investment is simultaneously large, and the agitation impeller flotator that it is used or on-mechanical agitation type flotation machine (containing flotation column) energy consumption is large, and production cost is higher.Utilize floatation desulfurization, in ore, the rate of recovery of aluminium oxide is generally 90% left and right.
Patent 03135157.3,200810230200.0 adopts desulfurization and desulfurization with roasting technique method in aluminium oxide flow process; in aluminium oxide flow process, desulfurization and desulfurization with roasting technique only can be processed the high-sulfur bauxite that sulfur content is lower conventionally; and processing cost is higher, has not yet to see the method and at high-sulfur bauxite, produce the large-scale industrial application of aluminium oxide.In addition, desulfurization with roasting technique can produce a certain amount of SO
2gas, affects to environment.
The Bioleaching of high-sulfur bauxite has small investment, resource utilization is high, the advantages such as environmental friendliness, but existing sulphide ore Leaching way and leaching device can not meet the needs of high-sulfur bauxite Bioleaching desulfurization, its main cause is that high-sulfur bauxite belongs to oxidized ore, conventional sulphide ore Bioleaching mode is processed high-sulfur bauxite and can be had the problems such as ore hardens, and leaching efficiency is low.
Summary of the invention
Object of the present invention is exactly the problem existing for above-mentioned technology, provides a kind of and can effectively improve desulfuration efficiency and alumina recovery rate, simplifies the operation, and realizes sulfur method and the device of the bauxite of high-sulphur alumyte desulfuration industrialization steady production.
The object of the invention is to be achieved through the following technical solutions.
A sulfur method for bauxite, is characterized in that the step of its sweetening process comprises: (1) is added chemical desulfurization agent and carried out chemical desulfurization; (2) inoculation Bioleaching bacterial classification, carries out Bioleaching desulfurization; (3) after after Bioleaching desulfurization, slurry filtration washs. obtain aluminium concentrate.
The sulfur method of a kind of bauxite of the present invention, it is characterized in that described step (1) is that the mog of bauxite is accounted for to 65%-85% for-0.075mm, add chemical desulfurization agent, maintenance the blowing pressure is 0.03-0.3MPa, carry out chemical desulfurization, after one section of chemical desulfurization, underflow is more than or equal to 90% through cyclone classification secondary grinding to ore pulp mog-0.075mm proportion.
The sulfur method of a kind of bauxite of the present invention, it is characterized in that described step (2) is by the qualified ore pulp inoculation Bioleaching bacterial classification of fineness after secondary grinding, adjusting slurry pH is 2.0-3.0, maintenance the blowing pressure is 0.02-0.2MPa, carry out Bioleaching desulfurization at a slow speed, the biological desulphurization time is more than or equal to 24 hours at a slow speed.
The sulfur method of a kind of bauxite of the present invention, after it is characterized in that bauxite filters, washs after to Bioleaching desulfurization, a filtered fluid part is returned as leaching strain liquid, it is neutral water that another part and cleaning solution mix by extracting sulfate radical and neutralization rear, and this neutral water returns to the washing for ore after ore grinding, chemical desulfurization and Bioleaching.
The sulfur method of a kind of bauxite of the present invention, its chemical desulfurization agent is 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, addition is the dry ore deposit of 80-200g/t, terpenic oil addition is the dry ore deposit of 40-100g/t, and slurry pH is original slurry pH after ore grinding; Bioleaching bacterial classification is Thiobacillus ferrooxidans or ferrous oxide hook end spirillum, and process conditions are: pulp density 10%-30%, slurry pH 2.0-3.0.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, is characterized in that described device is comprised of groove body, overflow launder, overflow outlet, feeding mouth, eddy flow feeder, slip nozzle, gas distributor, air inlet pipe, discharging opening.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, is characterized in that the groove body material surface acid-proof of described device, is lucite, acid-proof steel, armored concrete, or common iron appearance is coated with acid-proof material.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, the groove body that it is characterized in that described device is connected with lower cone body by upper cylinder, groove body total height is less than or equal to 10m, and its cylinder and cone aspect ratio are 5:1-1:2, and groove body inside diameter is 0.5m or more than 0.5m.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, is characterized in that the overflow launder of described device is positioned at groove body upper outside, and its bottom highs and lows line is horizontal by 5 ° ~ 25 °, and there is foam outlet in overflow launder minimum point outside.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, is characterized in that the feeding mouth of described device is connected with eddy flow feeder, can be from the charging of groove body upper vertical, also can side direction charging, and also can be from bottom feed.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, it is characterized in that after described device ore pulp is by eddy flow feeder from entering in groove with the tangent slip nozzle ejection in eddy flow feeder surface, slip nozzle inside diameter is 3mm-50mm, and nozzle number is more than 2 or 2.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, it is characterized in that described device is connected with gas distributor from the air inlet pipe of groove body bottom cone base air inlet, gas distributor is ring net distribution higher than cone inside 10mm-100mm, and increase with cone rising looped network thereupon, on gas distributor looped network pipeline, at interval of 20mm ~ 200mm distance, drive pore into, all air admission holes are provided with check (non-return) valve.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, is characterized in that described device is a plurality of parallel connections or is connected in series use or uses separately.
The desulfurizer of the sulfur method of a kind of bauxite of the present invention, for high-sulphur alumyte desulfuration, can carry out rapid chemical desulfurization and Bioleaching desulfurization simultaneously, during quick one section of chemical desulfurization, add chemical desulfurization agent, after ore grinding, ore pulp and chemical desulfurization agent are simultaneously by feeding mouth pan feeding, and gas distributor is inflated from bottom, carries out the desulfurization of atm number rapid chemical, sulfur mineral is spilled over to overflow launder from groove body top, and is discharged by overflow launder outlet.After rapid chemical desulfurization, ore pulp is after secondary grinding, after inoculation Bioleaching bacterial classification, by ore slurry pump, through feeding mouth and eddy flow feeder, enter groove body, under certain feeding pressure, obtain centrifugal force, form spin, gas distributor inflation in bottom realizes ore deposit, gas, liquid three-phase strengthening mass transfer, prevents settling ore pulp compression and hardens, carry out the Bioleaching desulfurization at a slow speed of low tolerance, because of under higher mog, sulfur mineral fully dissociates out, and Bioleaching efficiency is significantly improved.
A kind of high-sulphur alumyte desulfuration method of the present invention and device, simple to operate, and can significantly improve the rate of recovery of aluminium oxide, improve industrial stability, reduce high-sulphur alumyte desulfuration cost of investment and operating cost, realize the suitability for industrialized production of high-sulphur alumyte desulfuration.
Accompanying drawing explanation
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 (side direction 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 of the inventive method based on the inventive method.
The specific embodiment
The sulfur method of high-sulfur bauxite and a device, described apparatus structure comprises: 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, can be lucite, acid-proof steel, armored concrete, or common iron appearance is coated with acid-proof material; The groove body of described device (1) is connected with lower cone body by upper cylinder, and groove body (1) total height is 3m-10m, and its cylinder and cone aspect ratio are 5:1-1:2, and groove body (1) inside diameter is 1m or more than 1m; The foam tank of described device (2) is positioned at groove body (1) upper outside, and its bottom highs and lows line is horizontal by 5 ° ~ 25 °, and there is foam outlet (3) in foam tank (2) minimum point outside; The feeding mouth of described device (4) and eddy flow feeder connect (5) and connect, can be from groove body (1) upper vertical charging, also can side direction charging, and also can be from bottom feed; Described device ore pulp by eddy flow feeder (5) after from spraying and enter in groove with the tangent slip nozzle (6) in eddy flow feeder (5) surface, slip nozzle (6) internal diameter is 12mm-50mm, slip nozzle (6) number is more than 2 or 2; Described device is connected with gas distributor (7) from the air inlet pipe (8) of groove body (1) bottom cone base air inlet, gas distributor (7) is ring net distribution higher than cone inside 50mm-100mm, and increase with cone rising looped network thereupon, on gas distributor (7) looped network pipeline, at interval of 50mm ~ 200mm distance, drive pore into, all air admission holes are provided with check (non-return) valve.Described device can a plurality of parallel connection or is connected in series and uses or use separately.
For high-sulphur alumyte desulfuration, can carry out rapid chemical desulfurization and Bioleaching desulfurization simultaneously, during quick one section of chemical desulfurization, add chemical desulfurization agent, after ore grinding, ore pulp and chemical desulfurization agent are simultaneously by feeding mouth pan feeding, gas distributor is inflated from bottom, carry out the desulfurization of atm number rapid chemical, sulfur mineral is spilled over to overflow launder from groove body top, and is discharged by overflow launder outlet.After rapid chemical desulfurization, ore pulp is after secondary grinding, after inoculation Bioleaching bacterial classification, by ore slurry pump, through feeding mouth and eddy flow feeder, enter groove body, under certain feeding pressure, obtain centrifugal force, form spin, gas distributor inflation in bottom realizes ore deposit, gas, liquid three-phase strengthening mass transfer, prevents settling ore pulp compression and hardens, carry out the Bioleaching desulfurization at a slow speed of low tolerance, because of under higher mog, sulfur mineral fully dissociates out, and Bioleaching efficiency is significantly improved.
A kind of high-sulphur alumyte desulfuration method of the present invention and device, simple to operate, and can significantly improve the rate of recovery of aluminium oxide, improve industrial stability, reduce high-sulphur alumyte desulfuration cost of investment and operating cost, realize the suitability for industrialized production of high-sulphur alumyte desulfuration.
Embodiment 1
The high-sulfur bauxite under the coal of somewhere, Henan of take is test sample ore, and the chemical group submeter of ore is in Table 1.
High-sulfur bauxite under the coal of somewhere, table 1 Henan
| Composition | Al 2O 3 | SiO 2 | Fe 2O 3 | TiO 2 | K 2O | Na 2O | 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 that the parallel connection of one section of rapid chemical desulfurization underflow passes into 2 described equipments and carries out Bioleaching desulfurization.
Technological parameter: rapid chemical desulfurization mog is 78%-200 order, 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, to mog be 92%-200 order, enter stir logical after inoculation Thiobacillus ferrooxidans, regulating slurry pH is 2.5, with pump, be delivered to 2 described devices in parallel and carry out Bioleaching desulfurization,
Rig for testing:
Device for rapid chemical desulfurization: groove body inside diameter 1.5m, groove body material is steel, inwall is coated with acid-proof layer, groove body total height is 4.1m, its cylinder and cone aspect ratio are 1.5:1, bottom, overflow launder position highs and lows line is horizontal by 10 °, feeding mouth is from the charging of groove body sidepiece, slip nozzle inside diameter is 18mm, nozzle number is 3, be uniformly distributed on circumference, gas distributor is ring net distribution higher than cone inside 30mm, on gas distributor looped network pipeline, at interval of 50mm, drive pore into, the desulfurization of single groove rapid chemical, 0.15MPa is pressed in pan feeding ore deposit, the blowing pressure 0.3MPa.
2 devices for Bioleaching desulfurization: groove body inside diameter 4.5m, groove body material is steel, inwall is coated with acid-proof layer, groove body total height is 7.5m, its cylinder and cone aspect ratio are 3:1, bottom, overflow launder position highs and lows line is horizontal by 10 °, feeding mouth is from the charging of groove body sidepiece, slip nozzle inside diameter is 16mm, nozzle number is 6, be uniformly distributed on circumference, gas distributor is ring net distribution higher than cone inside 50mm, on gas distributor looped network pipeline, at interval of 100mm, drive pore into, 0.10MPa is pressed in pan feeding ore deposit, the blowing pressure 0.15MPa.After Bioleaching desulfurization, bauxite is low-sulfur bauxite after filtering, washing, a filtered fluid part is returned as leaching strain liquid, it is neutral water that another part and cleaning solution mix by extracting sulfate radical and neutralization rear, and this neutral water returns to the washing for ore after ore grinding, chemical desulfurization and Bioleaching.
1.5m internal diameter list groove rapid chemical desulfurization continuous operation, switches 4.5m internal diameter Bioleaching desulfurizer corresponding to underflow in every 24 hours, and the bonding groove Bioleaching time is 24h.Move continuously 168h, average technic index is in Table 2.
High-sulphur alumyte desulfuration result of the test under the coal of somewhere, table 2 Henan
| Product | Productive rate/% | S grade/% |
| Raw ore | 100.00 | 1.21 |
| Rapid chemical desulfurization underflow | 96.51 | 0.46 |
| Low-sulfur aluminium concentrate | 96.02 | 0.25 |
Take somewhere, Zun Yi high-sulfur bauxite as test sample ore, and the chemical group submeter of ore is in Table 3.
Somewhere, table 3 Zun Yi high-sulfur bauxite
| Composition | Al 2O 3 | SiO 2 | Fe 2O 3 | TiO 2 | K 2O | Na 2O | 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 that the parallel connection of one section of rapid chemical desulfurization underflow passes into 4 described equipments and carries out Bioleaching desulfurization.
Technological parameter: rapid chemical desulfurization mog is 65%-200 order, 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, to mog be 90%-200 order, enter stir logical after inoculation Thiobacillus ferrooxidans, regulating slurry pH is 2.0, with pump, be delivered to 4 described devices in parallel and 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 aspect ratio are 2:1, bottom, overflow launder position highs and lows line is horizontal by 15 °, feeding mouth is from the charging of groove body sidepiece, slip nozzle inside diameter is 12mm, nozzle number is 3, be uniformly distributed on circumference, gas distributor is ring net distribution higher than cone inside 15mm, on gas distributor looped network pipeline, at interval of 30mm, drive pore into, the desulfurization of single groove rapid chemical, 0.10MPa is pressed in pan feeding ore deposit, the blowing pressure 0.2MPa.
4 devices for Bioleaching desulfurization: groove body inside diameter 1.5m, groove body material is steel, inwall is coated with acid-proof layer, groove body total height is 4.1m, its cylinder and cone aspect ratio are 1.5:1, bottom, overflow launder position highs and lows line is horizontal by 10 °, feeding mouth is from the charging of groove body sidepiece, slip nozzle inside diameter is 18mm, nozzle number is 3, be uniformly distributed on circumference, gas distributor is ring net distribution higher than cone inside 30mm, on gas distributor looped network pipeline, at interval of 50mm, drive pore into, 0.08MPa is pressed in pan feeding ore deposit, the blowing pressure 0.10MPa.After Bioleaching desulfurization, bauxite is low-sulfur bauxite after filtering, washing, a filtered fluid part is returned as leaching strain liquid, it is neutral water that another part and cleaning solution mix by extracting sulfate radical and neutralization rear, and this neutral water returns to the washing for ore after ore grinding, chemical desulfurization and Bioleaching.
0.5m internal diameter list groove rapid chemical desulfurization continuous operation, switches 1.5m internal diameter Bioleaching desulfurizer corresponding to underflow in every 24 hours, and the bonding groove Bioleaching time is 48h.Move continuously 168h, average technic index is in Table 4.
Somewhere, table 4 Zun Yi high-sulphur alumyte desulfuration result of the test
| Product | Productive rate/% | 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 (13)
1. a sulfur method for bauxite, is characterized in that the step of its sweetening process comprises: (1) is added chemical desulfurization agent and carried out chemical desulfurization; (2) inoculation Bioleaching bacterial classification, carries out Bioleaching desulfurization; (3) after after Bioleaching desulfurization, slurry filtration washs. obtain aluminium concentrate.
2. according to authority profit, require the sulfur method of a kind of bauxite described in 1, it is characterized in that described step (1) is that the mog of bauxite is accounted for to 65%-85% for-0.075mm, add chemical desulfurization agent, maintenance the blowing pressure is 0.03-0.3MPa, carry out chemical desulfurization, after one section of chemical desulfurization, underflow is more than or equal to 90% through cyclone classification secondary grinding to ore pulp mog-0.075mm proportion.
3. according to authority profit, require the sulfur method of a kind of bauxite described in 1, it is characterized in that described step (2) is by the qualified ore pulp inoculation Bioleaching bacterial classification of fineness after secondary grinding, adjusting slurry pH is 2.0-3.0, maintenance the blowing pressure is 0.02-0.2MPa, carry out Bioleaching desulfurization at a slow speed, the biological desulphurization time is more than or equal to 24 hours at a slow speed.
4. according to authority profit, require the sulfur method of a kind of bauxite described in 1, after it is characterized in that bauxite filters, washs after to Bioleaching desulfurization, a filtered fluid part is returned as leaching strain liquid, it is neutral water that another part and cleaning solution mix by extracting sulfate radical and neutralization rear, and this neutral water returns to the washing for ore after ore grinding, chemical desulfurization and Bioleaching.
5. according to authority profit, require the sulfur method of a kind of bauxite described in 1, its chemical desulfurization agent is 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, addition is the dry ore deposit of 80-200g/t, terpenic oil addition is the dry ore deposit of 40-100g/t, and slurry pH is original slurry pH after ore grinding; Bioleaching bacterial classification is Thiobacillus ferrooxidans or ferrous oxide hook end spirillum, and process conditions are: pulp density 10%-30%, slurry pH 2.0-3.0.
6. a desulfurizer for the sulfur method of bauxite, it is characterized in that described device by groove body, overflow launder, overflow outlet 2. according to authority profit require described in 1, feeding mouth, eddy flow feeder, slip nozzle, gas distributor, air inlet pipe, discharging opening form.
7. according to authority profit, requiring the desulfurizer of the sulfur method of a kind of bauxite described in 8, it is characterized in that the groove body material surface acid-proof of described device, is lucite, acid-proof steel, armored concrete, or common iron appearance is coated with acid-proof material.
8. according to authority profit, require the desulfurizer of the sulfur method of a kind of bauxite described in 9, the groove body that it is characterized in that described device is connected with lower cone body by upper cylinder, groove body total height is less than or equal to 10m, its cylinder and cone aspect ratio are 5:1-1:2, and groove body inside diameter is 0.5m or more than 0.5m.
9. according to authority profit, require the desulfurizer of the sulfur method of a kind of bauxite described in 6, the overflow launder that it is characterized in that described device is positioned at groove body upper outside, its bottom highs and lows line is horizontal by 5 ° ~ 25 °, and there is foam outlet in overflow launder minimum point outside.
10. according to authority profit, require the desulfurizer of the sulfur method of a kind of bauxite described in 6, it is characterized in that the feeding mouth of described device is connected with eddy flow feeder, can be from the charging of groove body upper vertical, also can side direction charging, also can be from bottom feed.
11. require the desulfurizer of the sulfur method of a kind of bauxite described in 6 according to authority profit, it is characterized in that after described device ore pulp is by eddy flow feeder from entering in groove with the tangent slip nozzle ejection in eddy flow feeder surface, slip nozzle inside diameter is 3mm-50mm, and nozzle number is more than 2 or 2.
12. require the desulfurizer of the sulfur method of a kind of bauxite described in 6 according to authority profit, it is characterized in that described device is connected with gas distributor from the air inlet pipe of groove body bottom cone base air inlet, gas distributor is ring net distribution higher than cone inside 10mm-100mm, and increase with cone rising looped network thereupon, on gas distributor looped network pipeline, at interval of 20mm ~ 200mm distance, drive pore into, all air admission holes are provided with check (non-return) valve.
13. require the desulfurizer of the sulfur method of a kind of bauxite described in 6 according to authority profit, it is characterized in that described device is a plurality of parallel connections or is connected in series and uses or use separately.
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| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN106076609A (en) * | 2016-08-16 | 2016-11-09 | 攀枝花市九鼎智远知识产权运营有限公司 | 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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| 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 |
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| 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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