WO2014021729A1 - Способ получения глинозема - Google Patents
Способ получения глинозема Download PDFInfo
- Publication number
- WO2014021729A1 WO2014021729A1 PCT/RU2012/000630 RU2012000630W WO2014021729A1 WO 2014021729 A1 WO2014021729 A1 WO 2014021729A1 RU 2012000630 W RU2012000630 W RU 2012000630W WO 2014021729 A1 WO2014021729 A1 WO 2014021729A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alumina
- aluminum
- chloride
- aluminum chloride
- chloride hexahydrate
- Prior art date
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 24
- JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 claims abstract description 16
- 229940009861 aluminum chloride hexahydrate Drugs 0.000 claims abstract description 16
- 239000013078 crystal Substances 0.000 claims abstract description 12
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 10
- 238000002425 crystallisation Methods 0.000 claims abstract description 10
- 230000008025 crystallization Effects 0.000 claims abstract description 10
- 239000001110 calcium chloride Substances 0.000 claims abstract description 9
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims description 7
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 239000000243 solution Substances 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000006228 supernatant Substances 0.000 abstract 1
- 239000010414 supernatant solution Substances 0.000 abstract 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229940063656 aluminum chloride Drugs 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005185 salting out Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical class Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 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 1
- 239000011259 mixed solution 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
- 239000002244 precipitate Substances 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000009738 saturating Methods 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
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/22—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with halides or halogen acids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/306—Thermal decomposition of hydrated chlorides, e.g. of aluminium trichloride hexahydrate
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0015—Obtaining aluminium by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Definitions
- the invention relates to metallurgy, in particular to acidic methods for producing alumina and can be used in the processing of low-grade aluminum-containing raw materials.
- a known method of producing alumina from high-silica bauxite through hydrochloric acid leaching including roasting aluminum-containing raw materials at temperatures up to 700 ° C, treating it with hydrochloric acid, salting out aluminum chloride by saturating the clarified chloride solution with hydrogen chloride gas, calcining aluminum chloride to obtain aluminum oxide and pyrohydrolysis with the return of hydrogen chloride at the stage of acid treatment and salting out (Eisner D., Jenkins DH and Sinha HN Alumina via hydrochloric acid leaching of high silica bauxites - process development. Light metals, 1984, p. 411-426).
- the disadvantages of this method should also include the need to obtain dry gaseous hydrogen chloride at subsequent stages of the technology to return it to the redistribution of salting out, which in some cases complicates the process and increases the consumption of thermal energy.
- the basis of the invention is the task of developing a method for producing metallurgical alumina from low-grade raw materials, which allows processing of poor high-siliceous ores and waste.
- the technical result is to increase the quality of alumina and reduce energy consumption.
- the method of producing alumina is as follows.
- a clarified solution of aluminum chloride after leaching of natural aluminum-containing raw materials with hydrochloric acid, separation of insoluble precipitate and preliminary evaporation to a saturation stage with a concentration of about 30% according to A1Cl 3 is mixed with a 50-70% CaCl 2 solution (700-900 g / l), based on further reducing its concentration in a mixed solution below 30-40%. Crystallization is carried out in the presence of seed crystals of aluminum chloride hexahydrate with a particle size of 250-500 microns, continuing evaporation and maintaining the rate of salt evolution, providing the required size of production crystals.
- the crystallization process is completed after increasing the concentration of CaCl 2 in the mother liquor to the initial level of 700-900 g / l and reducing the content of Al 2 0 3 to 5-10 g / l. At the same time, more than 90% of A1 2 0 3 entering the process is released with salt. The resulting pulp is separated, the mother liquor is returned to the head of the process, and the crystals of aluminum chloride hexahydrate are sent to obtain alumina by thermal decomposition.
- a method for producing alumina is illustrated by specific examples.
- the clarified chloride solution was evaporated in a flask to an AlCl content of 3 31% and gradually poured into heated 60 percent calcium chloride solution prior to isolating the crystals of aluminum chloride hexahydrate was added and seed crystals of a size of 250-500 microns from previous experiments in an amount equal to twice the calculated weight A1C1 3 -6H 2 O introduced into the process with chloride clarified pa create, continuing evaporation for 1 hour.
- the resulting crystals were washed with 38 percent hydrochloric acid on the filter, and calcined at 1000 ° C.
- the content of P 2 O 5 in the obtained alumina was less than 0.001%, and the average particle size of the product was 82.3 ⁇ m. This fully meets the requirements for metallurgical alumina.
- Example 2 The experiment was repeated under the same conditions, but without introducing calcium chloride into the process.
- the content of P 2 O 5 in the obtained alumina was 0.004%, and the average particle size of the product was 71.2 ⁇ m, that is, there is a mismatch with the requirements for the content of impurities.
- Example 3 The experiment was repeated under the conditions of Example 1, but crystals of aluminum chloride hexahydrate of size 100-250 ⁇ m were introduced as seeds.
- the content of P 2 O 5 in the obtained alumina was less than 0.002%, and the average particle size of the product was 52.2 ⁇ m, that is, there are inconsistencies with the requirements for particle size distribution.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN662DEN2015 IN2015DN00662A (en:Method) | 2012-08-01 | 2012-08-01 | |
| CA2877653A CA2877653C (en) | 2012-08-01 | 2012-08-01 | Process to produce alumina |
| US14/417,724 US9322080B2 (en) | 2012-08-01 | 2012-08-01 | Method for producing alumina |
| CN201280074926.4A CN104736482B (zh) | 2012-08-01 | 2012-08-01 | 生产氧化铝的方法 |
| AU2012386620A AU2012386620B2 (en) | 2012-08-01 | 2012-08-01 | Method for producing alumina |
| RU2013151914/05A RU2570077C2 (ru) | 2012-08-01 | 2012-08-01 | Способ получения глинозема |
| PCT/RU2012/000630 WO2014021729A1 (ru) | 2012-08-01 | 2012-08-01 | Способ получения глинозема |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/RU2012/000630 WO2014021729A1 (ru) | 2012-08-01 | 2012-08-01 | Способ получения глинозема |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014021729A1 true WO2014021729A1 (ru) | 2014-02-06 |
Family
ID=50028297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2012/000630 WO2014021729A1 (ru) | 2012-08-01 | 2012-08-01 | Способ получения глинозема |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9322080B2 (en:Method) |
| CN (1) | CN104736482B (en:Method) |
| AU (1) | AU2012386620B2 (en:Method) |
| CA (1) | CA2877653C (en:Method) |
| IN (1) | IN2015DN00662A (en:Method) |
| RU (1) | RU2570077C2 (en:Method) |
| WO (1) | WO2014021729A1 (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2705071C1 (ru) * | 2018-11-07 | 2019-11-01 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" | Способ получения металлургического глинозема кислотно-щелочным способом |
| EP4025717A4 (en) * | 2019-09-06 | 2023-10-04 | Alcoa Of Australia Limited | METHOD FOR PRODUCING ALUMINUM OXIDE |
| TW202246180A (zh) * | 2021-03-05 | 2022-12-01 | 澳大利亞商美鋁澳大利亞有限公司 | 製備氧化鋁之方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE562498C (de) * | 1930-02-05 | 1932-10-26 | I G Farbenindustrie Akt Ges | Herstellung von praktisch eisenfreier Tonerde aus Ton |
| US4222989A (en) * | 1978-01-27 | 1980-09-16 | Milan Belsky | Method for the manufacture of pure aluminum oxide from aluminum ore |
| SU1161467A1 (ru) * | 1983-09-28 | 1985-06-15 | Казахский политехнический институт им.В.И.Ленина | Способ получени глинозема из высококремнистого алюминийсодержащего сырь |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL116409A (en) * | 1995-12-15 | 1999-11-30 | Mashal Alumina Ind Ltd | Process for the recovery of alumina and silica |
| CN1298872C (zh) * | 2002-12-09 | 2007-02-07 | 攀枝花钢铁有限责任公司钢铁研究院 | 含钒熟料浸出液的除磷净化方法 |
| CN100465096C (zh) * | 2007-05-08 | 2009-03-04 | 浙江大学 | 一种以煤系高岭岩或粉煤灰为原料制备片状氧化铝的方法 |
| EP2686458A4 (en) * | 2011-03-18 | 2015-04-15 | Orbite Aluminae Inc | METHODS FOR RECOVERING RARE EARTH ELEMENTS FROM ALUMINUM-CONTAINING MATERIALS |
| BR112014006275A2 (pt) * | 2011-09-16 | 2017-04-11 | Orbite Aluminae Inc | processos de preparação de alumina e de vários outros produtos |
-
2012
- 2012-08-01 CA CA2877653A patent/CA2877653C/en not_active Expired - Fee Related
- 2012-08-01 RU RU2013151914/05A patent/RU2570077C2/ru not_active IP Right Cessation
- 2012-08-01 AU AU2012386620A patent/AU2012386620B2/en not_active Ceased
- 2012-08-01 IN IN662DEN2015 patent/IN2015DN00662A/en unknown
- 2012-08-01 WO PCT/RU2012/000630 patent/WO2014021729A1/ru active Application Filing
- 2012-08-01 US US14/417,724 patent/US9322080B2/en not_active Expired - Fee Related
- 2012-08-01 CN CN201280074926.4A patent/CN104736482B/zh not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE562498C (de) * | 1930-02-05 | 1932-10-26 | I G Farbenindustrie Akt Ges | Herstellung von praktisch eisenfreier Tonerde aus Ton |
| US4222989A (en) * | 1978-01-27 | 1980-09-16 | Milan Belsky | Method for the manufacture of pure aluminum oxide from aluminum ore |
| SU1161467A1 (ru) * | 1983-09-28 | 1985-06-15 | Казахский политехнический институт им.В.И.Ленина | Способ получени глинозема из высококремнистого алюминийсодержащего сырь |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150203936A1 (en) | 2015-07-23 |
| CN104736482B (zh) | 2016-09-14 |
| RU2013151914A (ru) | 2015-05-27 |
| AU2012386620B2 (en) | 2017-02-02 |
| CA2877653C (en) | 2016-07-12 |
| CN104736482A (zh) | 2015-06-24 |
| US9322080B2 (en) | 2016-04-26 |
| CA2877653A1 (en) | 2014-02-06 |
| RU2570077C2 (ru) | 2015-12-10 |
| IN2015DN00662A (en:Method) | 2015-06-26 |
| AU2012386620A1 (en) | 2015-01-22 |
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