CN1369328A - Ore dressing process for desiliconizing bauxite - Google Patents
Ore dressing process for desiliconizing bauxite Download PDFInfo
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- CN1369328A CN1369328A CN 01106869 CN01106869A CN1369328A CN 1369328 A CN1369328 A CN 1369328A CN 01106869 CN01106869 CN 01106869 CN 01106869 A CN01106869 A CN 01106869A CN 1369328 A CN1369328 A CN 1369328A
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Abstract
An ore-dressing process for desiliconizing bauxite includes grinding the bauxite by 0.075 mm of granularity, adding flatation agent and flotation. Its advantages are decreasing ore slurry by 30-50%, increasing floatation power by 30-50%, higher granularity of ore concentrate and tailings, and high selectivity for Si-Al separation.
Description
The present invention relates to a kind of dressing process for desiliconizing of bauxite.The concentrate product that obtains with this method can be used to produce aluminum oxide.
In the industrial application of bauxite, often require the alumina silica ratio of bauxite to reach certain value.Especially in alumina producing, efficient low-consume, the simple bayer process general requirement of technology alumina silica ratio are greater than 10.For diaspore type bauxite, most alumina silica ratios are less than 10, thereby have limited the industrial application economically and reasonably of this class bauxite.By desiliconization, the alumina silica ratio that improves bauxite is the key that addresses this problem.The method of diaspore type bauxite desiliconization has a lot, and the flotation desilication technology is one of cost-effective method.
At present, in the floatation process of diaspore type bauxite, siliceous mineral removed two paths, a kind of is closed circuit flotation, flotation tailings is for abandoning mine tailing, another kind is the levigate back desliming of siliceous mineral must be lost tail.Two kinds of typical bauxite foam flotation methods for example: a kind of is with the levigate back flotation of bauxite, through roughly selecting, obtaining concentrate after selected, cleaner tailings Returning process, rougher tailings are after flotation tailings or rougher tailings are scanned again, scanning mine tailing is flotation tailings, and flotation tailings is that true tailings abandons; Another kind is with the flotation of the levigate back of bauxite, through roughly selecting, obtaining concentrate, the cleaner tailings Returning process after selected, after rougher tailings is scanned again, scanning mine tailing is flotation tailings, and flotation tailings (or claiming chats) carries out classification, and the fine fraction of telling returns ore grinding and regrinds as true tailings, coarse fraction.
Mostly hardness is little for siliceous gangue mineral in the bauxite, easy argillization in the comminution process, and the distribution of silicon mine is the thickness polarization in the selected material, and some exists with coarse grain monomer and rich intergrowth thereof silicon mine again in the relative enrichment in fine fraction.And the foam productive rate is big during bauxite flotation, and concentration gradient is big in the flotation cell.Therefore, sludge is easy to be carried secretly come-up, and fine fraction is based on gangue in the cleaner tailings, and coarse grain siliceous mineral and rich intergrowth thereof are generally stayed slightly, finally enter flotation tailings in the scavenger flotation cell.In above-mentioned technological process, the cleaner tailings Returning process, when being taken back flow process again, the siliceous gangue of particulate also brings a large amount of water into flow process, cause to roughly select concentration and scan concentration and reduce greatly, the siliceous gangue of particulate disturbs flotation, aluminium, the isolating selectivity variation of silicon, the recovery of coarse fraction valuable mineral is relatively poor.The result makes that the throughput of flotation operation reduces, flotation reagent consumption increases, granularity of concentrate is thin or the mine tailing granularity is meticulous and (or) floatation indicators worsens.If flotation tailings is (or claim chats) classification again, the fine fraction of telling as true tailings abandon, coarse fraction returns ore grinding and regrinds, and also causes the overground of coarse grain siliceous mineral, the mine tailing fineness is thinner.
The objective of the invention is to, comminution products characteristics and bauxite flotation characteristics at bauxite, overcome prior art and in the bauxite flotation process, can not remove sludge and coarse grain silicon mine and rich intergrowth thereof timely and effectively based on siliceous mineral, reclaim coarse grain diaspore and intergrowth thereof, floatation concentration can't guarantee, cause flotation operation throughput low, the power consume height, floatation process worsens, desiliconization effect is poor, granularity of concentrate is thin or the mine tailing granularity is meticulous, shortcomings such as production process is difficult to stablize, providing a kind of can remove slightly timely and effectively, the siliceous gangue of fine fraction, reclaim the coarse fraction valuable mineral, guarantee flotation operation concentration, improve flotation operation throughput, a kind of flexibly new dressing process for desiliconizing bauxite of products scheme.
The present invention is achieved by the following technical solutions.
The present invention includes grinde ore, adding flotation reagent are carried out flotation, account under the condition of 38%-95% for-0.074mm at grinding fineness, add flotation reagent and carry out flotation, floatation process comprises that one or many is roughly selected, one or many is selected, zero degree or one or many are scanned, output bauxite flotation concentrate, cleaner tailings and flotation tailings (rougher tailings or scan mine tailing), sub-elect mine tailing 2 again from cleaner tailings, merge into true tailings with flotation tailings.
The processing of the cleaner tailings that flotation produces be with the cleaner tailings classification and (or) after the screening, fine fraction is a mine tailing 2, coarse fraction and flotation concentrate merging are as final concentrate.
The processing of the cleaner tailings that flotation produces be with the cleaner tailings classification and (or) after the screening, fine fraction is a mine tailing 2, coarse fraction returns flotation or grinding operation.
The processing of the cleaner tailings that flotation produces is with after the cleaner tailings gravity treatment, and gravity tailings is a mine tailing 2, and gravity concentrate and flotation concentrate merge as final concentrate.
The processing of the cleaner tailings that flotation produces is with after the cleaner tailings gravity treatment, and gravity tailings is a mine tailing 2, and gravity concentrate returns flotation or grinding operation.
Main rich aluminium mineral such as diaspore in the bauxite, bigger with the nonhomogeneous hardness of main siliceous mineral such as kaolinite, illite, agalmatolite, Mohs' hardness is respectively: diaspore 6-7, kaolinite 1-3, illite 1-2, agalmatolite 1-2.Therefore, the difficult relatively comminution of rich aluminium mineral such as diaspore makes Al
2O
3Enrichment relatively in the coarse fraction of ore milling product.Siliceous minerals such as kaolinite, illite, agalmatolite are easily pulverized, and make SiO
2Enrichment relatively in the fine fraction of ore milling product.In the bauxite flotation process, because valuable mineral content height, the foam productive rate is big, and the particulate siliceous mineral can be mingled with come-up inevitably.Foam is when selected, and the particulate siliceous mineral is removed and stays in the groove, and coarse grain diaspore and intergrowth thereof more easily fall groove, makes that cleaner tailings concentration is low, size-grade distribution is the thickness polarization, fine fraction silicone content height, coarse fraction aluminium content be higher relatively.Cleaner tailings is carried out classification, screening or gravity treatment again, and the fine fraction of telling just can be used as true tailings, and coarse fraction can be merged into final concentrate or choosing again according to producing actual requirement and flotation concentrate to the concentrate product.Desiliconization sludge, dehydration so in time both avoided sludge to worsen floatation process, guaranteed flotation operation concentration again, guaranteed the recovery of coarse fraction valuable mineral, improved the throughput of flotation operation equipment, and products scheme was flexible.Coarse fraction siliceous mineral in the selected material is stayed in the flotation tailings and is directly discharged as true tailings, and this has been avoided overground to it, has guaranteed that the mine tailing granularity is thicker.Therefore can further put corase grind ore deposit fineness.
The present invention makes the ore pulp amount of flotation operation (not comprising selected for the last time) reduce 30%-50%, the processing power of flotation operation improves 30%-50%, granularity of concentrate and mine tailing granularity have been increased slightly, in the concentrate-percentage ratio of the shared ratio of 0.074mm reduced 3%-30%, in the mine tailing-percentage ratio of the shared ratio of 0.074mm reduced 5%-27%, and can require to change flexibly products scheme according to the difference to the concentrate product.Compare with existing pneumatic flotation technology, the isolating selectivity height of aluminium silicon, production process is easily stable, remarkable in economical benefits.
Below in conjunction with embodiment method of the present invention is described further.
Embodiment 1: raw material: the comprehensive sample ore in alum clay mining area, Shanxi, its main chemical compositions is (%)
| ????Al 2O 3 | ????SiO 2 | ????Fe 2O 3 | Alumina silica ratio |
| ????60.40 | ????13.43 | ????4.67 | ????4.50 |
Table 1: ore dressing and desiliconizing result
| Products scheme | Concentrate yield (%) | The concentrate alumina silica ratio | Concentrate Al 2O 3The rate of recovery (%) | Concentrate-0.074mm % | Mine tailing-0.074mm % | Mine tailing 2 ore pulp amounts account for cleaner tailings slurry amount % | Mine tailing 2 alumina silica ratios |
| Flotation concentrate | 72.36 | ?12.64 | ?81.56 | ?75.7 | ?73.2 | ?100 | ?1.24 |
| Flotation concentrate+selected II, selected III mine tailing screen overflow | 75.40 | ?11.74 | ?84.17 | ?73.0 | ?81.1 | ?97 | ?1.05 |
| Flotation concentrate+cleaner tailings screen overflow | 76.44 | ?11.02 | ?85.35 | ?71.7 | ?85.7 | ?96 | ?1.01 |
| Selected II concentrate+cleaner tailings screen overflow | 79.03 | ?9.5 | ?87.03 | ?72.62 | ?84.0 | ?97 | ?0.97 |
Adopt wherein a kind of of oxidation paraffin wax soap, tall oil, lipid acid and soap class and derivative etc. or several to make collecting agent, adopt wherein a kind of such as yellow soda ash, sodium hydroxide, polyphosphoric acid salt, water glass, small organic molecule or several to adjust agent, carry out pneumatic flotation.
Flow process is: grinding fineness accounts for 75%, one roughing, output flotation concentrate after the triple cleaning, flotation tailings, cleaner tailings for-0.074mm.Cleaner tailings adopts the 0.074mm sieve classification, and fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction and flotation concentrate merge, and can obtain multiple concentrate product according to the requirement to the concentrate product.Ore dressing and desiliconizing the results are shown in table 1.
Embodiment 2: other condition is with embodiment 1.Flow process is: grinding fineness accounts for 75%, twice and roughly selects, output flotation concentrate after the triple cleaning, flotation tailings, cleaner tailings for-0.074mm.The cleaner tailings classification of sedimentation, fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction and flotation concentrate are merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 78.02%, alumina silica ratio 10.05, Al
2O
3The rate of recovery 86.35%.Concentrate-0.074mm73.4%, mine tailing-0.074mm80.7%.Mine tailing 2 ore pulp amounts account for 93% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 0.99.
Embodiment 3: other condition is with embodiment 1.Flow process is: grinding fineness accounts for 85%, twice and roughly selects, output flotation concentrate after the triple cleaning, flotation tailings, cleaner tailings for-0.074mm.The cleaner tailings classification of sedimentation, fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction and flotation concentrate are merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 76.13%, concentrate alumina silica ratio 11.32, Al
2O
3The rate of recovery 85.68%.Concentrate-0.074mm83%, mine tailing-0.074mm91%.Mine tailing 2 ore pulp amounts account for 90% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 0.99.
Embodiment 4: other condition is with embodiment 1.Flow process is: grinding fineness accounts for 65%, twice and roughly selects, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.The cleaner tailings classification, output fine fraction and coarse fraction, fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction returns grinding flowsheet.
Ore dressing and desiliconizing result: concentrate alumina silica ratio 11.21, Al
2O
3The rate of recovery 85.38%.Concentrate-0.074mm75%, mine tailing-0.074mm82%.Mine tailing 2 ore pulp amounts account for 93% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.01.
Embodiment 5: other condition is with embodiment 1.Flow process is: grinding fineness accounts for 75% for-0.074mm, one roughing, and twice is selected, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings.The cleaner tailings classification, fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction returns flotation flowsheet.
Ore dressing and desiliconizing result: concentrate alumina silica ratio 11.08, Al
2O
3The rate of recovery 85.31%, concentrate-0.074mm73%, mine tailing-0.074mm80%.Mine tailing 2 ore pulp amounts account for 92% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.01.
Embodiment 6: raw material: the comprehensive sample ore in Henan bauxite district, its main chemical compositions are (%)
| ????Al2O3 | ????SiO 2 | ????Fe 2O 3 | Alumina silica ratio |
| ????64.69 | ????11.39 | ????4.93 | ????5.68 |
Other condition is with embodiment 1.Flow process is: grinding fineness accounts for 68%, twice and roughly selects, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.The cleaner tailings classification, fine fraction of telling and flotation tailings merge directly as mine tailing, and coarse fraction and the flotation concentrate told are merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 81.39%, alumina silica ratio 11.85, Al
2O
3The rate of recovery 90.63%, concentrate-0.074mm63.8%, mine tailing-0.074mm86.4%.Mine tailing 2 ore pulp amounts account for 93% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.2.
Embodiment 7: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 58%, twice and roughly selects, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.The cleaner tailings classification, fine fraction and flotation tailings merge directly as mine tailing, and coarse fraction returns grinding flowsheet.
Ore dressing and desiliconizing result: concentrate yield 80.28%, alumina silica ratio 12.17, Al
2O
3The rate of recovery 90.14%, concentrate-0.074mm65.5%, mine tailing-0.074mm82.3%.Mine tailing 2 ore pulp amounts account for 95% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.06.
Embodiment 8: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 38%, twice and roughly selects for-0.074mm, and twice selected, output flotation concentrate, cleaner tailings and rougher tailings.Cleaner tailings classification, the fine fraction of output are directly as mine tailing, and coarse fraction and rougher tailings merge regrinding and reconcentration.
Ore dressing and desiliconizing result: concentrate yield 80.36%, alumina silica ratio 12.43, Al
2O
3The rate of recovery 90.57%, concentrate-0.074mm60.1%, mine tailing-0.074mm89.8%.Mine tailing 2 ore pulp amounts account for 93% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.03.
Embodiment 9: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 95%, twice and roughly selects for-0.074mm, and twice selected, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings.Cleaner tailings adopts dense bucket sorting, and fine fraction and flotation tailings are directly as mine tailing, and coarse fraction returns to be roughly selected.
Ore dressing and desiliconizing result: concentrate yield 81.61%, alumina silica ratio 11.02, Al
2O
3The rate of recovery 88.47%, concentrate-0.074mm92.5%, mine tailing-0.074mm95.3%.Mine tailing 2 ore pulp amounts account for 50% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.37.
Embodiment 10: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 58%, twice and roughly selects for-0.074mm, and twice selected, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings.Cleaner tailings adopts separation by shaking table, and shaking table sorts mine tailing and flotation tailings merges directly as mine tailing, and shaking table sorts concentrate and returns ore grinding.
Ore dressing and desiliconizing result: concentrate alumina silica ratio 11.78, Al
2O
3The rate of recovery 90.39%, concentrate-0.074mm59.4%, mine tailing-0.074mm89.7%.Mine tailing 2 ore pulp amounts account for 90% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.1.
Embodiment 11: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 68%, twice and roughly selects, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.Cleaner tailings adopts separation by shaking table, and shaking table sorts mine tailing and flotation tailings merges directly as mine tailing, and shaking table sorts concentrate and flotation concentrate is merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 81.33%, alumina silica ratio 11.56, Al
2O
3The rate of recovery 90.25%, concentrate-0.074mm63.2%, mine tailing-0.074mm88.91%.Mine tailing 2 ore pulp amounts account for 88% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.1.
Embodiment 12: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 68%, one roughing, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.Cleaner tailings adopts the whizzer sorting, and whizzer mine tailing and flotation tailings merge directly as mine tailing, and whizzer concentrate and flotation concentrate are merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 81.07%, alumina silica ratio 11.73, Al
2O
3The rate of recovery 90.88%, concentrate-0.074mm64.1%, mine tailing-0.074mm84.7%.Mine tailing 2 ore pulp amounts account for 88% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.2.
Embodiment 13: other condition is with embodiment 7.Flow process is: grinding fineness accounts for 68%, one roughing, triple cleaning, output flotation concentrate behind the once purging selection, flotation tailings, cleaner tailings for-0.074mm.Cleaner tailings adopts the spiral chute sorting, and spiral chute mine tailing and flotation tailings merge directly as mine tailing, and spiral chute concentrate and flotation concentrate are merged into final concentrate.
Ore dressing and desiliconizing result: concentrate yield 82.3%, alumina silica ratio 11.2 5, Al
2O
3The rate of recovery 91.11%, concentrate-0.074mm64.6%, mine tailing-0.074mm83.8%.Mine tailing 2 ore pulp amounts account for 88% of cleaner tailings ore pulp amount, mine tailing 2 alumina silica ratios 1.06.
Claims (5)
1. the dressing process for desiliconizing of a bauxite, comprise grinde ore, adding flotation reagent are carried out flotation, it is characterized in that: account under the condition of 38%-95% for-0.074mm at grinding fineness, add flotation reagent and carry out flotation, floatation process comprises that one or many is roughly selected, one or many is selected, zero degree or one or many are scanned, output bauxite flotation concentrate, cleaner tailings and flotation tailings (rougher tailings or scan mine tailing), sub-elect mine tailing 2 again from cleaner tailings, merge into true tailings with flotation tailings.
2. the dressing process for desiliconizing of a kind of bauxite according to claim 1, it is characterized in that: the processing of the cleaner tailings that flotation produces be with the cleaner tailings classification and (or) after the screening, fine fraction is a mine tailing 2, and coarse fraction and flotation concentrate merge as final concentrate.
3. the dressing process for desiliconizing of a kind of bauxite according to claim 1 is characterized in that: the processing of the cleaner tailings that flotation produces be with the cleaner tailings classification and (or) after the screening, fine fraction is a mine tailing 2, coarse fraction returns flotation or grinding operation.
4. the dressing process for desiliconizing of a kind of bauxite according to claim 1 is characterized in that: the processing of the cleaner tailings that flotation produces is with after the cleaner tailings gravity treatment, and gravity tailings is a mine tailing 2, and gravity concentrate and flotation concentrate merging are as final concentrate.
5. the dressing process for desiliconizing of a kind of bauxite according to claim 1 is characterized in that: the processing of the cleaner tailings that flotation produces is with after the cleaner tailings gravity treatment, and gravity tailings is a mine tailing 2, and gravity concentrate returns flotation or grinding operation.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348331C (en) * | 2005-11-28 | 2007-11-14 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| WO2008006264A1 (en) * | 2006-07-06 | 2008-01-17 | Aluminum Corporation Of China Limited | Floatation method of desulphurisaiton and desiliconization for bauxite |
| CN100382894C (en) * | 2005-11-01 | 2008-04-23 | 中南大学 | Gradient floatation method for bauxite |
| CN101190426B (en) * | 2006-11-24 | 2010-04-14 | 中南大学 | Vulcanization-oxidization mixing copper ore floatation method |
| CN101081378B (en) * | 2007-05-23 | 2012-04-18 | 华锡集团车河选矿厂 | Novel technics of rough-flotation high concentration high-efficient flotation |
| CN101632962B (en) * | 2009-08-03 | 2013-01-16 | 孝义市天章铝业有限公司 | Beneficiating method of diaspore type bauxite |
| CN103736600A (en) * | 2013-12-30 | 2014-04-23 | 河南省岩石矿物测试中心 | Method for desiliconizing bauxite |
| CN103736582A (en) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | Method for sorting monohydrallite |
| CN103736598A (en) * | 2014-01-14 | 2014-04-23 | 会理县鹏晨废渣利用有限公司 | Copper smelting slag copper recovery and flotation technology |
| CN104174484A (en) * | 2014-07-14 | 2014-12-03 | 高旭 | Desiliconization processing method for bauxite flotation tailings |
| CN106269207A (en) * | 2016-08-22 | 2017-01-04 | 中国铝业股份有限公司 | A kind of method improving bauxite resource utilization rate |
-
2001
- 2001-02-13 CN CN 01106869 patent/CN1369328A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100382894C (en) * | 2005-11-01 | 2008-04-23 | 中南大学 | Gradient floatation method for bauxite |
| CN100348331C (en) * | 2005-11-28 | 2007-11-14 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| WO2008006264A1 (en) * | 2006-07-06 | 2008-01-17 | Aluminum Corporation Of China Limited | Floatation method of desulphurisaiton and desiliconization for bauxite |
| CN101190426B (en) * | 2006-11-24 | 2010-04-14 | 中南大学 | Vulcanization-oxidization mixing copper ore floatation method |
| CN101081378B (en) * | 2007-05-23 | 2012-04-18 | 华锡集团车河选矿厂 | Novel technics of rough-flotation high concentration high-efficient flotation |
| CN101632962B (en) * | 2009-08-03 | 2013-01-16 | 孝义市天章铝业有限公司 | Beneficiating method of diaspore type bauxite |
| CN103736582A (en) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | Method for sorting monohydrallite |
| CN103736600A (en) * | 2013-12-30 | 2014-04-23 | 河南省岩石矿物测试中心 | Method for desiliconizing bauxite |
| CN103736600B (en) * | 2013-12-30 | 2016-07-06 | 河南省岩石矿物测试中心 | Method for desiliconizing bauxite |
| CN103736598A (en) * | 2014-01-14 | 2014-04-23 | 会理县鹏晨废渣利用有限公司 | Copper smelting slag copper recovery and flotation technology |
| CN104174484A (en) * | 2014-07-14 | 2014-12-03 | 高旭 | Desiliconization processing method for bauxite flotation tailings |
| CN106269207A (en) * | 2016-08-22 | 2017-01-04 | 中国铝业股份有限公司 | A kind of method improving bauxite resource utilization rate |
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