MY186787A - The smelter-grade alumina production method (embodiments) - Google Patents
The smelter-grade alumina production method (embodiments)Info
- Publication number
- MY186787A MY186787A MYPI2019001538A MYPI2019001538A MY186787A MY 186787 A MY186787 A MY 186787A MY PI2019001538 A MYPI2019001538 A MY PI2019001538A MY PI2019001538 A MYPI2019001538 A MY PI2019001538A MY 186787 A MY186787 A MY 186787A
- Authority
- MY
- Malaysia
- Prior art keywords
- alumina
- aluminium
- liquor
- spent liquor
- chloride
- 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 abstract 11
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 5
- 238000001556 precipitation Methods 0.000 abstract 4
- 238000002386 leaching Methods 0.000 abstract 3
- 239000002994 raw material Substances 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 abstract 2
- JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 150000004645 aluminates Chemical class 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 239000013067 intermediate product Substances 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to metallurgy. The authors proposed some embodiments of the smelter-grade alumina production method, which provides for the following operations: extraction of aluminium-containing raw materials with hydrochloric acid, separation of the formed chloride slurry into waste silica precipitate and clarified chloride liquor, crystallisation of aluminium chloride hexahydrate from the clarified chloride liquor, aluminium chloride hexahydrate thermal precipitation into aluminium oxide followed by its calcination to produce crude alumina as an intermediate product, crude alumina leaching with alkaline spent liquor and precipitation of the resulting aluminate liquor, water washing and subsequent calcination of the aluminium hydroxide separated, and boiling-down of the spent liquor, which left the precipitation area, and the water, which was used to wash down aluminium hydroxide to produce alkaline spent liquor, which is returned to the intermediate alumina product leaching stage. In this case, about 15% of the acidic spent liquor is subjected to pyrohydrolysis, the chloride ion concentration in the crude alumina is maintained at a level of 0.2-5.0%, the chloride ion concentration in the alkaline spent liquor is maintained at a level of 40-90 g/L and the spent liquor, which left the precipitation area (10-40 wt.% of the total flow), is boiled-down, until the chlorine-containing compound crystals to be removed from the process are separated. The spent liquor is largely used for leaching aluminium-containing raw materials and only a part of it is fed to remove impurities by pyrohydrolysis. The technical result is a better quality of alumina and lower energy consumption in the production of smelter-grade alumina from low-grade raw materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2016138762A RU2647041C1 (en) | 2016-09-30 | 2016-09-30 | Method of producing metallurgical alumina (variants) |
| PCT/RU2017/000678 WO2018063029A1 (en) | 2016-09-30 | 2017-09-20 | Method for producing metallurgical alumina (variants) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY186787A true MY186787A (en) | 2021-08-20 |
Family
ID=61629520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI2019001538A MY186787A (en) | 2016-09-30 | 2017-09-20 | The smelter-grade alumina production method (embodiments) |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN109790045B (en) |
| CA (2) | CA3118678C (en) |
| MY (1) | MY186787A (en) |
| RU (1) | RU2647041C1 (en) |
| WO (1) | WO2018063029A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2705071C1 (en) * | 2018-11-07 | 2019-11-01 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" | Method of producing metallurgical alumina by an acid-alkaline method |
| AU2019449397A1 (en) * | 2019-06-07 | 2022-01-06 | Metso Outotec (Finland) Oy | Process and plant for thermal decomposition of aluminium chloride hydrate into aluminium oxide |
| CN110963662A (en) * | 2019-12-09 | 2020-04-07 | 上海净屹环保科技有限公司 | Method for recovering aluminum salt coagulant from aluminum-containing sludge |
| CN111186851B (en) * | 2020-03-05 | 2022-03-08 | 昆明冶金研究院有限公司 | Method for preparing modified aluminum-based catalyst by recycling electric dust collection powder of fluidized bed roaster |
| WO2024040302A1 (en) * | 2022-08-26 | 2024-02-29 | Alcoa Of Australia Limited | Process for preparing alumina |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961030A (en) * | 1974-08-12 | 1976-06-01 | Freeport Minerals Company | Production of alumina from ores |
| DD147185A3 (en) * | 1978-04-24 | 1981-03-25 | Siegfried Ziegenbalg | METHOD FOR PRODUCING PURE ALUMINUM OXIDE |
| CN100410174C (en) * | 2006-08-29 | 2008-08-13 | 神华准格尔能源有限责任公司 | Method for preparing aluminum oxide |
| RU2554136C2 (en) * | 2012-07-20 | 2015-06-27 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Method of producing alumina |
| CN103738989B (en) * | 2012-12-28 | 2015-08-19 | 中国神华能源股份有限公司 | A kind of middle-low bauxite produces the method for aluminum oxide |
| CN103693665B (en) * | 2012-12-28 | 2015-11-18 | 中国神华能源股份有限公司 | A kind of coal ash for manufacturing is for the method for high purity aluminium oxide |
| CA2900260C (en) * | 2013-02-04 | 2019-02-19 | Aleksandr Sergeevich SENYUTA | Method of producing aluminum oxide |
-
2016
- 2016-09-30 RU RU2016138762A patent/RU2647041C1/en active
-
2017
- 2017-09-20 CN CN201780060150.3A patent/CN109790045B/en active Active
- 2017-09-20 MY MYPI2019001538A patent/MY186787A/en unknown
- 2017-09-20 CA CA3118678A patent/CA3118678C/en active Active
- 2017-09-20 CA CA3032938A patent/CA3032938A1/en active Pending
- 2017-09-20 WO PCT/RU2017/000678 patent/WO2018063029A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CA3032938A1 (en) | 2018-04-05 |
| CA3118678C (en) | 2024-05-14 |
| CA3118678A1 (en) | 2018-04-05 |
| CN109790045A (en) | 2019-05-21 |
| WO2018063029A1 (en) | 2018-04-05 |
| CN109790045B (en) | 2022-06-17 |
| RU2647041C1 (en) | 2018-03-13 |
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