CN1140355C - Counterfloatating desiliconization process for diaspore type bauxite - Google Patents
Counterfloatating desiliconization process for diaspore type bauxite Download PDFInfo
- Publication number
- CN1140355C CN1140355C CNB011068876A CN01106887A CN1140355C CN 1140355 C CN1140355 C CN 1140355C CN B011068876 A CNB011068876 A CN B011068876A CN 01106887 A CN01106887 A CN 01106887A CN 1140355 C CN1140355 C CN 1140355C
- Authority
- CN
- China
- Prior art keywords
- diaspore
- bauxite
- flotation
- type bauxite
- diaspore type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910001648 diaspore Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 24
- 238000005188 flotation Methods 0.000 claims abstract description 20
- -1 alkyl halide quaternary ammonium salt Chemical class 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 5
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 5
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 16
- 239000012141 concentrate Substances 0.000 abstract description 11
- 229910052900 illite Inorganic materials 0.000 abstract description 10
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 abstract description 10
- 239000000377 silicon dioxide Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 229910018404 Al2 O3 Inorganic materials 0.000 abstract 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 abstract 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 abstract 1
- 239000008396 flotation agent Substances 0.000 abstract 1
- 229910052901 montmorillonite Inorganic materials 0.000 abstract 1
- 229910052903 pyrophyllite Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 17
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 9
- 229910052622 kaolinite Inorganic materials 0.000 description 9
- 229910052604 silicate mineral Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000004131 Bayer process Methods 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The present invention relates to a reverse floatation desiliconizing method for diaspore type bauxite. The present invention makes use of flotation agents and definite technology to improve the difference of hydrophilic / non-hydrophilic properties between the surface of diasporite and the surfaces of aluminosilicate minerals particularly comprising montmorillonite, illite, pyrophyllite, etc. The present invention adopts reverse flotation method for desiliconizing diaspore type bauxite to realize the reverse flotation desiliconization of the diaspore type bauxite. The alumina-silica ratio of flotation concentrate can reach more than 10 and the recovery rate of Al2 O3 is above 80% by adopting the present invention to process bauxite of which the alumina-silica ratio is from 4 to 6.
Description
[technical field] the present invention relates to a kind of method of diaspore type bauxite Counterfloatating desiliconization.
The bauxite resource of [background technology] China is abundant, but the overwhelming majority belongs to diaspore type bauxite, has high silicon, low iron, low alumina silica ratio (A/S) and forms complicated characteristics.Because the siliceous height of ore, alumina silica ratio are low, make China's alumina producing energy consumption height, deficiency in economic performance.Therefore, adopting economical rationality and effective method for desilication and technology, improve the alumina silica ratio of alumina producing raw material, is to realize one of important channel that China's aluminium oxide is efficient, low energy consumption is produced.At present, the desilication method of diaspore type bauxite has floatation, the pre-desiliconization method of roasting, the biological desiliconization method etc. that leaches, and wherein " ore dressing (flotation)--Bayer process " is considered to solve at present the effective way that Chinese diaspore type bauxite resource is produced aluminium oxide.But adopt floating agent emersion diaspore, and suppress the direct floatation process of aluminium silicate mineral because the shortcoming of himself, be difficult to use rapidly in practice, main shortcoming is: come-up concentrate amount is big, the filtering means dehydration difficulty, and the floating agent residual volume is big in the concentrate, and Baeyer (Bayer) the method stripping of back segment alumina producing is had harmful effect.
[summary of the invention] in order to improve in the diaspore type bauxite the particularly efficient of the FLOTATION SEPARATION of kaolinite, illite and pyrophillite etc. of diaspore mineral surface and aluminium silicate mineral, specially proposes the present invention.
Reverse floatation process is with flotation collector emersion aluminium silicate mineral, and diaspore is suppressed, and staying in the flotation trough becomes concentrate., because surface hydrophilic be easy to filter, and floating agent content is few in the concentrate Baeyer (Bayer) the method stripping of back segment alumina producing is had no adverse effects based on the concentrate of diaspore.
The present invention utilizes floating agent and certain technology to improve the particularly difference of the surface hydrophilic/hydrophobic property of kaolinite, illite and pyrophillite etc. of diaspore surface and aluminium silicate mineral, adopt reverse flotation method to carry out the desiliconization of diaspore type bauxite, realize the diaspore type bauxite Counterfloatating desiliconization.The reverse floatation process condition is as follows:
Adopt the wet type rod mill to carry out the selective milling of diaspore type bauxite, the granularity of ore milling product accounts for 70～90% for-0.074mm, ore milling product is without desliming, directly enter flotation, floatation concentration is 15～30%, adopt roughly select for twice, flow process that three times are scanned, the mash acid alkalinity of whole floatation process keeps pH less than 6.0.As the froth pulp emersion, diaspore is then stayed in the groove as bauxite concentrate silicate minerals such as kaolinite, illite and pyrophillites;
The collecting agent of reverse flotation is the alkyl halide quaternary ammonium salt, and molecule is:
Br (Cl or I) alkyl halide quaternary ammonium salt has strong basicity, therefore ionization fully in water, exchange absorption can take place with the metal ion of clay mineral in ammonium cation, and is adsorbed in silicate mineral surfaces such as kaolinite, illite and pyrophillite, makes these mineral surfaces hydrophobic; And with the effect on diaspore surface be Electrostatic Absorption, the zero point of diaspore is more than the pH=6, when pH less than 6 the time, alkyl halide quaternary ammonium salt and diaspore effect are very weak, and the method for floating that the present invention adopts, the mash acid alkalinity of its whole floatation process keeps pH less than 6.0, so diaspore is difficult to come-up, can with silicate minerals such as kaolinite, illite and pyrophillite effectively reverse flotation separate; The consumption of alkyl halide quaternary ammonium salt is 100～500 gram/ton raw ores.
The diaspore type bauxite not desliming of the present invention after to ore grinding, the low acidity environment (pH＜6.0) that keeps flotation pulp, by adding the alkyl halide quaternary ammonium salt as collecting agent, to change the diaspore mineral surface and silicate mineral surface hydrophilic/hydrophobic properties such as kaolinite, illite and pyrophillite in the bauxite, make the diaspore surface hydrophilic, and do not have an effect with flotation collector; Silicate mineral surface hydrophobicities such as kaolinite, illite and pyrophillite.By changing the hydrophilic/hydrophobic character on diaspore and silicate mineral surfaces such as kaolinite, illite and pyrophillite, can make diaspore and silicate minerals such as kaolinite, illite and pyrophillite realize that reverse flotation separates.Adopt the present invention to handle the bauxite of alumina silica ratio 4-6, the flotation concentrate alumina silica ratio can reach more than 10, Al
2O
3The rate of recovery is more than 80%.
[specific embodiment]
1) use the Henan bauxite of raw ore alumina silica ratio A/S=5.6, process system is: the granularity of ore milling product accounts for about 86% for-0.074mm, and the acid-base value of flotation system is controlled at pH less than 6; With the alkyl halide quaternary ammonium salt is collecting agent (alkyl halide quaternary ammonium salt), carry out reverse flotation and can obtain product in the groove, and as bauxite concentrate, its grade (Al
2O
3) be 70%, SiO in the concentrate
2Content is 7%, and concentrate alumina silica ratio A/S=10 is with Al
2O
3Calculate recovery rate is 81%.
Claims (1)
1, diaspore type bauxite Counterfloatating desiliconization process, it is characterized in that: utilize floating agent to improve the difference of diaspore surface and aluminium silicate mineral surface hydrophilic/hydrophobic property, adopt reverse flotation method to carry out the desiliconization of diaspore type bauxite, the reverse floatation process condition is as follows:
A〉adopt the wet type rod mill to carry out the selective milling of diaspore type bauxite, the granularity of ore milling product accounts for 70～90% for-0.074mm, ore milling product is without desliming, directly enter flotation, floatation concentration is 15～30%, adopt roughly select for twice, flow process that three times are scanned, the mash acid alkalinity of whole floatation process keeps pH less than 6.0;
B〉collecting agent of reverse flotation is the alkyl halide quaternary ammonium salt, molecule is:
The consumption of Br (Cl or I) alkyl halide quaternary ammonium salt is 100～500 gram/ton raw ores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068876A CN1140355C (en) | 2001-02-23 | 2001-02-23 | Counterfloatating desiliconization process for diaspore type bauxite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011068876A CN1140355C (en) | 2001-02-23 | 2001-02-23 | Counterfloatating desiliconization process for diaspore type bauxite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1370625A CN1370625A (en) | 2002-09-25 |
| CN1140355C true CN1140355C (en) | 2004-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011068876A Expired - Lifetime CN1140355C (en) | 2001-02-23 | 2001-02-23 | Counterfloatating desiliconization process for diaspore type bauxite |
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| CN (1) | CN1140355C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594182C (en) * | 2005-05-18 | 2010-03-17 | 中国铝业股份有限公司 | Method of reverse flotation for preparing alumina from concentrate of beauxite |
| CN100354045C (en) * | 2005-12-02 | 2007-12-12 | 中南大学 | Bauxite crude-fine grading flotation desilicification method |
| CN101337204B (en) * | 2008-08-13 | 2011-03-30 | 中南大学 | Use of quaternaries compound in floating silicate mineral and silicate mineral floating trapping agent |
| CN101816981B (en) * | 2010-03-16 | 2012-12-19 | 武汉理工大学 | Environmentally-friendly amine cationic collector and using method thereof |
| CN102218374A (en) * | 2010-04-13 | 2011-10-19 | 中南大学 | Method for selectively milling cassiterite multi-metal sulfides ores |
| CN101844112B (en) * | 2010-06-30 | 2013-06-19 | 中南大学 | Application of collecting agent in reverse floatation of bauxite |
| CN102205275A (en) * | 2011-05-18 | 2011-10-05 | 昆明理工大学 | Reinforced floatation desilicification method for high-silicon bauxite |
| CN102407189B (en) * | 2011-10-11 | 2013-04-17 | 辽宁科技大学 | Preparation method of reverse flotation collector for bauxite |
| CN104069949B (en) * | 2014-05-29 | 2016-06-29 | 西安建筑科技大学 | A kind of pyrophyllite and quartzy flotation separation method |
| CN105396698B (en) * | 2015-11-19 | 2018-01-05 | 中钢集团马鞍山矿山研究院有限公司 | A kind of compound quaternary ammonium salt cationic silicate mineral collecting agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207962A (en) * | 1998-07-22 | 1999-02-17 | 北京矿冶研究总院 | Bauxite flotation method |
-
2001
- 2001-02-23 CN CNB011068876A patent/CN1140355C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207962A (en) * | 1998-07-22 | 1999-02-17 | 北京矿冶研究总院 | Bauxite flotation method |
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| Publication number | Publication date |
|---|---|
| CN1370625A (en) | 2002-09-25 |
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Owner name: CHINESE ALUMINIUM CO., LTD. Free format text: FORMER OWNER: CENTRAL-SOUTH CHINA UNIV. Effective date: 20060721 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060721 Address after: 100814 No. 12, Fuxing Road, Beijing Patentee after: Aluminum Corporation of China Limited Address before: 410083 Hunan city Changsha left ridge Patentee before: Central South University |
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| CX01 | Expiry of patent term |
Granted publication date: 20040303 |
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| CX01 | Expiry of patent term |