CN1569341A - Method for selecting iron ore from red mud - Google Patents
Method for selecting iron ore from red mud Download PDFInfo
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- CN1569341A CN1569341A CN 200410023997 CN200410023997A CN1569341A CN 1569341 A CN1569341 A CN 1569341A CN 200410023997 CN200410023997 CN 200410023997 CN 200410023997 A CN200410023997 A CN 200410023997A CN 1569341 A CN1569341 A CN 1569341A
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- red mud
- red
- iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 26
- 239000012141 concentrate Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims description 14
- 238000000227 grinding Methods 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 26
- 238000011084 recovery Methods 0.000 description 10
- 230000004907 flux Effects 0.000 description 8
- 238000005245 sintering Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000007885 magnetic separation Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 238000004131 Bayer process Methods 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001608 iron mineral Inorganic materials 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- JYIMWRSJCRRYNK-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4] JYIMWRSJCRRYNK-UHFFFAOYSA-N 0.000 description 2
- 229910001648 diaspore Inorganic materials 0.000 description 2
- 239000006148 magnetic separator Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 244000070406 Malus silvestris Species 0.000 description 1
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 241001625808 Trona Species 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000021321 essential mineral Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 229910052598 goethite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910021646 siderite Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention is a method for selecting iron ore from red mud. It preprocesses the red mud to eliminate the tiny red mud and acquires the red mud sand, carries on grinding and classification to the red mud sand then eliminates the tail ore through raw selection and acquires the concentrate after choiceness. The picking process uses high background field density and small pulse frequency, the choiceness uses lower background field density and larger pulse frequency. The flow is simple, and the reclaim rate of iron is high, the reclaim rate of iron can reach to 90%. The invention has excellent economical efficiency and social efficiency.
Description
Technical field
The present invention relates to a kind of method of from red mud, selecting iron ore, belong to field of silicate technology, be used for the processing of alumina producing waste red mud residues.
Background technology
At present, the production method of aluminium oxide comprises sintering process, Bayer process and Baeyer sintering combination method in the world, no matter be which kind of alumina-producing method, the capital produces accessory substance---red mud, red mud is as the accessory substance of alumina producing, one ton of aluminium oxide of every production, by-product 1-1.5 ton red mud, general in the world way is that it is piled into the red mud heap.Domestic only have a small amount of red mud to be used to produce cement and red-sludge plastic goods.Red mud is an alkaline matter, and the sewage that the rain-out red mud produces all has pollution to water quality and soil.Contain multiple valuable composition in the red mud, bulk deposition, discharging not only exerts an influence to environment, also being a kind of waste of resource, is the work that economic benefit and many social benefits are arranged to the red mud comprehensive utilization and to the work that valuable element reclaims therefore.
Produce in the technology of aluminium oxide in Baeyer sintering combination method, Bayer red mud need enter sintering process and prepare burden and continue to utilize, reclaim wherein aluminium oxide and sodium oxide molybdena, but the iron oxide that contains in the Bayer process red mud is not used, thereby mix to join and reach alumina by sintering and produce needed ingredient requirement and quartz wherein needs to consume high grade ore, therefore, how rationally to utilize iron wherein simultaneously can alleviate of the influence of quartzy silicon again, become a difficult problem in the Bayer process aluminum oxide production process sintering process.
The composition of red mud is mainly: aluminium oxide 15-25%, and iron oxide 25-35%, silica 15-25%, sodium oxide molybdena 5-15% also contains some other composition.In the aluminium oxide mineral reserve, exist the ferro-aluminum attendant phenomenon, after having passed through alumina extraction technology, valuable element aluminium is extracted out, and valuable element iron is at the accessory substance of alumina producing---obtained enrichment to a certain degree in the red mud, for providing certain basis, so from red mud, recycle the main direction that iron is comprehensive utilization red mud technical research project in the alumina producing always to its comprehensive utilization.
Red mud is handled and comprehensive utilization, is one of difficult problem of puzzlement countries in the world alumina producing always, and the iron in the recovery red mud is an important ring of red mud comprehensive utilization especially, and the various countries scientific research personnel falls over each other to study this difficult problem.Done many work aspect the research of iron in reclaiming red mud such as the former Soviet Union, Japan, Germany, the U.S., main method is magnetic separation, flotation, gravity treatment and combined process flow thereof, and its effect is all undesirable.With red mud and reducing agent mix grinding and carry out reduction roasting, carry out magnetic separation again, can improve the rate of recovery of iron greatly, but production cost height, flow process complexity.Domestic Zhongnan Polytechnic Univ, Northeastern University etc. also reclaim iron to red mud and have carried out more deep research and discussion." adopting the iron in the pulsating high gradient magnetic separator recovery red mud " literary composition that " Jiangxi non-ferrous metal " published on the 4th phase in 2000 has been introduced and has been used pulsating high gradient magnetic separator recovery Pingguo, Guangxi aluminium company to be raw material with Guigang bauxite, the production aluminium oxide produces the iron in the red mud, the result is that TFe is 19% o'clock in raw material, concentrate grade is 54.7%, the rate of recovery is 35.36%, and the feasibility of commercial Application is not strong.
Summary of the invention
The object of the present invention is to provide a kind of method of from red mud, selecting iron ore, the yield height of iron, the iron ore of acquisition is of high grade.
The method of selecting iron ore from red mud of the present invention is at first carried out preliminary treatment to red mud and is removed thin red mud and obtain red muddy sand, and red muddy sand is carried out grind grading, removes mine tailing through roughly selecting respectively again, selected back obtains concentrate.
Grind grading: the one, remove the bur on iron mineral surface, the 2nd, make iron-bearing mineral reach monomer dissociation, preferably the fineness of controlling behind the red muddy sand grind grading was that 200 mesh sieves account for 60～70%.Classification makes material that reaches certain fineness and the feed separation that does not reach this fineness as yet.Roughly selecting operation is to adopt higher background field intensity and less ripple frequency, can reclaim mineral morely, improves the overall recovery of iron mineral; Selected operation is to adopt lower background field intensity and bigger ripple frequency, non-iron mineral and the intergrowth roughly selected in the mineral is removed, to improve the iron grade in the concentrate to greatest extent; Preferably be controlled to be: the background field intensity of roughly selecting operation is controlled to be 0.85～0.95T, and ripple frequency is controlled to be 100～150 times/minute; Selected background field intensity is controlled to be 0.68～0.85T, and ripple frequency is controlled to be 200～250 times/minute.The classifying cyclone of roughly selecting with selected control is preferably in operation under the condition that pressure is 0.20～0.25Mpa, and is effective.
The gained concentrate is handled through washing, removes impurity as far as possible, so that improve the grade of iron ore, the red muddy sand that thin red mud obtains is also better through washing processing meeting with removing.
In order to reduce cost, slurry can be recycled.
The present invention selects iron ore from red mud method flow is simple, is convenient to implement, and the yield height of iron reaches more than 77%, and the overall recovery of iron can reach more than 90%, and the iron ore ferrous grade height of acquisition reaches more than 56%.Enforcement of the present invention can be alleviated the pressure of Bayer process red mud piece-rate system, reduces the pressure of sintering process ore blending system, produces aluminium oxide for Baeyer sintering combination method and has reduced manufacturing cost, has improved the market competitiveness.Simultaneously the ferro element in the red mud is carried out ore dressing and reclaim, the iron ore of selecting can be used for smelting iron, and has reached the purpose of red mud comprehensive utilization, turns waste into wealth, and is beneficial to environmental protection, has good economic benefit and social benefit.
Description of drawings
Fig. 1, one embodiment of the invention process flow diagram.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
The weight percent of the used red mud composition of the present invention consists of:
SiO
220.55, Fe
2O
336.97, Al
2O
320.46, Na
2O 11.36, surplus are other.Wherein, A/S (Al/Si ratio) 1.00, N/S (Na/Si ratio) 0.55.
Through after the primary election, the weight percent of selected red muddy sand consists of:
SiO
214.83, T Fe (total amount of Fe) 46.87, Al
2O
36.54, CaO 0.43, MgO 0.16, surplus be other.Wherein the S element 0.028, P element 0.255.
Ore in sand form thing phase weight percent consists of: N
2OAl
2O
31.68 SiO
21.73H
2O (moisture sodium silicoaluminate) accounts for 22.4%; 3NaAlSiO
4NaOH accounts for 3.4%; Fe
2O
3Account for 68.6%; AlO (OH) (diaspore) accounts for 2.5%; CaCO
3Account for 1.42%.
Essential mineral is bloodstone, goethite, siderite, contains sodium aluminosilicate of water, diaspore, secondly is aragonite and calcite to also have a spot of trona, waterglass, caustic soda etc. in the ore in sand form.
Processing procedure is as follows:
The thin red mud that red mud is removed wherein gets red muddy sand, and red muddy sand by twice separating, washing, is obtained iron-holder at the 30%-40% red muddy sand; With the red muddy sand grind grading, fineness was controlled to be 200 mesh sieves and accounted for 70%, separated with classifying cyclone, operating pressure is controlled at 0.22Mpa, implements to roughly select and selected operation, roughly selects to remove mine tailing and obtain chats, the selected concentrate that obtains, the process conditions of pulsating high gradient magnetic separation control are as follows:
Roughly select part: background field intensity magnetic flux density 0.855T, pulse frequency 125 times/minute, flow 100L/H gives 3 minutes ore deposit time;
Selected part: background field intensity magnetic flux density 0.681T, pulse frequency 200 times/minute, flow 100L/H gives 3 minutes ore deposit time.
Can carry out carrying out washing treatment to concentrate.Each operation washings can be recycled.
The concentrate grade of Huo Deing is 55.56% at last, and productive rate is 77.79%, and the overall recovery of iron is 90.38%; The chats grade of selecting is 49.55%, and productive rate is 9.26%, and the overall recovery of iron is 9.6%; The tailings grade of selecting is 0.1%, and productive rate is 12.95%, and the overall recovery of iron is 0.02%.
Embodiment 2
The method of selecting iron ore from red mud of the present invention is as follows:
The thin red mud that red mud is removed wherein gets red muddy sand, and red muddy sand by twice separating, washing, is obtained red muddy sand; With the red muddy sand grind grading, fineness was controlled to be 200 mesh sieves and accounted for 60%, separated with classifying cyclone, operating pressure is controlled at 0.20Mpa, implements to roughly select and selected operation, roughly selects to remove mine tailing and obtain chats, the selected concentrate that obtains, the process conditions of pulsating high gradient magnetic separation control are as follows:
Roughly select part: background field intensity magnetic flux density 0.92T, pulse frequency 140 times/minute, flow 100L/H gives 3 minutes ore deposit time;
Selected part: background field intensity magnetic flux density 0.75T, pulse frequency 220 times/minute, flow 100L/H gives 3 minutes ore deposit time.
Can carry out carrying out washing treatment to concentrate.Each operation washings can be recycled.
Other is with embodiment 1.
Embodiment 3
The method of selecting iron ore from red mud of the present invention is as follows:
The thin red mud that red mud is removed wherein gets red muddy sand, and red muddy sand by twice separating, washing, is obtained red muddy sand; With the red muddy sand grind grading, fineness was controlled to be 200 mesh sieves and accounted for 65%, separated with classifying cyclone, operating pressure is controlled at 0.24Mpa, implements to roughly select and selected operation, roughly selects to remove mine tailing and obtain chats, the selected concentrate that obtains, the process conditions of pulsating high gradient magnetic separation control are as follows:
Roughly select part: background field intensity magnetic flux density 0.90T, pulse frequency 120 times/minute, flow 110L/H gives 3 minutes ore deposit time;
Selected part: background field intensity magnetic flux density 0.80T, pulse frequency 230 times/minute, flow 105L/H gives 3 minutes ore deposit time.
Can carry out carrying out washing treatment to concentrate.Each operation washings can be recycled.
Other is with embodiment 1.
Embodiment 4
The method of selecting iron ore from red mud of the present invention is as follows:
The thin red mud that red mud is removed wherein gets red muddy sand, and red muddy sand by twice separating, washing, is obtained red muddy sand; With the red muddy sand grind grading, fineness was controlled to be 200 mesh sieves and accounted for 62%, separated with classifying cyclone, operating pressure is controlled at 0.21Mpa, implements to roughly select and selected operation, roughly selects to remove mine tailing and obtain chats, the selected concentrate that obtains, the process conditions of pulsating high gradient magnetic separation control are as follows:
Roughly select part: background field intensity magnetic flux density 0.88T, pulse frequency 140 times/minute, flow 110L/H gives 3.5 minutes ore deposit time;
Selected part: background field intensity magnetic flux density 0.81T, pulse frequency 225 times/minute, flow 110L/H gives 3 minutes ore deposit time.
Other is with embodiment 1.
Claims (9)
1, a kind of method of selecting iron ore from red mud is characterized in that at first red mud is carried out preliminary treatment to be removed thin red mud and obtain red muddy sand, and red muddy sand is carried out grind grading, removes mine tailing through roughly selecting respectively again, selected back obtains concentrate.
2, method according to claim 1 is characterized in that fineness was controlled at 200 mesh sieves behind the red mud grind grading to account for 60～70%.
3, method according to claim 2, it is characterized in that roughly selecting operation is to adopt higher background field intensity and less ripple frequency to carry out.
4, method according to claim 3 is characterized in that the background field intensity of roughly selecting operation is controlled to be 0.85～0.95T, and ripple frequency is controlled to be 100～150 times/minute.
5, method according to claim 3 is characterized in that selected operation is to adopt lower background field intensity and bigger ripple frequency to carry out.
6, method according to claim 5 is characterized in that selected background field intensity is controlled to be 0.68～0.85T, and ripple frequency is controlled to be 200～250 times/minute.
7, according to the described method of the arbitrary claim of claim 1-6, the pressure that it is characterized in that roughly selecting with the classifying cyclone of selected control is 0.20～0.25MPa.
8, method according to claim 7 is characterized in that concentrate need be through the washing processing.
9, method according to claim 8 is characterized in that removing thin red mud and obtains red muddy sand and need handle through washing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023997 CN1246082C (en) | 2004-05-14 | 2004-05-14 | Method for selecting iron ore from red mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023997 CN1246082C (en) | 2004-05-14 | 2004-05-14 | Method for selecting iron ore from red mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1569341A true CN1569341A (en) | 2005-01-26 |
| CN1246082C CN1246082C (en) | 2006-03-22 |
Family
ID=34480423
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410023997 Expired - Lifetime CN1246082C (en) | 2004-05-14 | 2004-05-14 | Method for selecting iron ore from red mud |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865146B (en) * | 2005-05-18 | 2010-07-28 | 贵阳铝镁设计研究院 | Red mud desanding and coarse matter removing method in alumina production |
| CN101831560A (en) * | 2010-06-10 | 2010-09-15 | 中国铝业股份有限公司 | Method for producing iron ore concentrate by using Bayer process red muddy sand |
| CN101875499A (en) * | 2010-06-10 | 2010-11-03 | 中国铝业股份有限公司 | Non-waste-residue production process for bauxite |
| CN101153350B (en) * | 2007-09-17 | 2011-05-25 | 济南钢铁股份有限公司 | Technique for industrialized development and utilization of red mud |
| CN101417261B (en) * | 2008-11-21 | 2011-10-26 | 中国铝业股份有限公司 | Bayer process red mud processing method |
| CN102989581A (en) * | 2012-09-29 | 2013-03-27 | 贵州绿水青山环保科技有限公司 | Method for removing radioactivity of red mud |
| CN104368440A (en) * | 2014-09-30 | 2015-02-25 | 中国铝业股份有限公司 | Novel technology and device for Bayer process-based separation of iron in high-iron red mud |
| CN105478218A (en) * | 2015-05-07 | 2016-04-13 | 王海超 | Processing method of separating fine red mud |
| CN108686828A (en) * | 2018-05-29 | 2018-10-23 | 湖南埃铝环保科技有限公司 | A method of sorting carries iron and removes sodium from red mud |
| CN111589572A (en) * | 2020-05-21 | 2020-08-28 | 金建工程设计有限公司 | Process for recovering iron ore concentrate and ore sand from alumina red mud |
| WO2024098929A1 (en) * | 2022-11-08 | 2024-05-16 | 中铝郑州有色金属研究院有限公司 | Treatment method for red mud resulting from digestion of high-iron bauxite |
-
2004
- 2004-05-14 CN CN 200410023997 patent/CN1246082C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865146B (en) * | 2005-05-18 | 2010-07-28 | 贵阳铝镁设计研究院 | Red mud desanding and coarse matter removing method in alumina production |
| CN101153350B (en) * | 2007-09-17 | 2011-05-25 | 济南钢铁股份有限公司 | Technique for industrialized development and utilization of red mud |
| CN101417261B (en) * | 2008-11-21 | 2011-10-26 | 中国铝业股份有限公司 | Bayer process red mud processing method |
| CN101831560A (en) * | 2010-06-10 | 2010-09-15 | 中国铝业股份有限公司 | Method for producing iron ore concentrate by using Bayer process red muddy sand |
| CN101875499A (en) * | 2010-06-10 | 2010-11-03 | 中国铝业股份有限公司 | Non-waste-residue production process for bauxite |
| CN102989581A (en) * | 2012-09-29 | 2013-03-27 | 贵州绿水青山环保科技有限公司 | Method for removing radioactivity of red mud |
| CN104368440A (en) * | 2014-09-30 | 2015-02-25 | 中国铝业股份有限公司 | Novel technology and device for Bayer process-based separation of iron in high-iron red mud |
| CN105478218A (en) * | 2015-05-07 | 2016-04-13 | 王海超 | Processing method of separating fine red mud |
| CN108686828A (en) * | 2018-05-29 | 2018-10-23 | 湖南埃铝环保科技有限公司 | A method of sorting carries iron and removes sodium from red mud |
| CN111589572A (en) * | 2020-05-21 | 2020-08-28 | 金建工程设计有限公司 | Process for recovering iron ore concentrate and ore sand from alumina red mud |
| WO2024098929A1 (en) * | 2022-11-08 | 2024-05-16 | 中铝郑州有色金属研究院有限公司 | Treatment method for red mud resulting from digestion of high-iron bauxite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1246082C (en) | 2006-03-22 |
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