JO2879B1 - Process and Plant for Producing Alumina from Aluminum Hydroxide - Google Patents
Process and Plant for Producing Alumina from Aluminum HydroxideInfo
- Publication number
- JO2879B1 JO2879B1 JO2011320A JOP20110320A JO2879B1 JO 2879 B1 JO2879 B1 JO 2879B1 JO 2011320 A JO2011320 A JO 2011320A JO P20110320 A JOP20110320 A JO P20110320A JO 2879 B1 JO2879 B1 JO 2879B1
- Authority
- JO
- Jordan
- Prior art keywords
- aluminum hydroxide
- water
- alumina
- stream
- hydrate filter
- Prior art date
Links
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 title abstract 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 7
- 238000005406 washing Methods 0.000 abstract 4
- 238000001816 cooling Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- 238000009835 boiling Methods 0.000 abstract 1
- 239000002826 coolant Substances 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 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
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
- C01F7/444—Apparatus therefor
-
- 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
- C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
- C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
- C01F7/445—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination making use of a fluidised bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00006—Large-scale industrial plants
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Process and Plant for Producing Alumina from Aluminum Hydroxide In the production of alumina from aluminum hydroxide, a) aluminum hydroxide is purified with washing water in a hydrate filter b) the purified aluminum hydroxide is at least partly dried and/or precalcined in at least one preheating stage c) this pretreated aluminum hydroxide is calcined in a fluidized-bed reactor to obtain alumina d) the alumina obtained is cooled in at least one indirect cooling stage using water as coolant e) the steam (D) obtained from the cooling water due to the heat transfer in the indirect cooling stage is separated from the liquid fraction (A) of the exit stream from the cooling stage (E) f) and the least one partial stream (T) of the liquid fraction (A) guided to the hydrate filter and used there as washing water for purifying the aluminum hydroxide in the hydrate filter. In accordance with the invention, and additional water stream (Z) is added to the partial stream (T) of the liquid fraction (A) guided to the hydrate filter and the mixing ratio of the two streams (T, Z) is adjusted such that the washing water stream (W) resulting thereform has a constant maximum temperature value below the boiling point of water and the volume flow required by the hydrate filter as washing water (Fig. 1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010050495.5A DE102010050495B4 (en) | 2010-11-08 | 2010-11-08 | Process and plant for the production of aluminum oxide from aluminum hydroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JO2879B1 true JO2879B1 (en) | 2015-03-15 |
Family
ID=44907853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JO2011320A JO2879B1 (en) | 2010-11-08 | 2011-10-24 | Process and Plant for Producing Alumina from Aluminum Hydroxide |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU2011328390B2 (en) |
| BR (1) | BR112013011240B8 (en) |
| DE (1) | DE102010050495B4 (en) |
| EA (1) | EA022436B1 (en) |
| JO (1) | JO2879B1 (en) |
| UA (1) | UA105585C2 (en) |
| WO (1) | WO2012062593A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2022100082B4 (en) * | 2019-11-26 | 2023-06-22 | Metso Metals Oy | Optimized semi-dry process for sintering of aluminosilicates in the production of alumina |
| DE102020127374A1 (en) | 2020-10-16 | 2022-04-21 | Technische Universität Bergakademie Freiberg | Process for decomposing a metal carbonate and/or metal hydroxide to their metal oxide by means of microwaves |
| CN112429756A (en) * | 2020-12-17 | 2021-03-02 | 中铝国际工程股份有限公司 | Method and device for controlling temperature of first decomposition tank |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU518907B2 (en) * | 1979-01-08 | 1981-10-29 | Monash University | Alumina production |
| DE3615622A1 (en) | 1986-05-09 | 1987-11-12 | Metallgesellschaft Ag | METHOD FOR CARRYING OUT ENDOTHERMAL PROCESSES |
| DE19542309A1 (en) | 1995-11-14 | 1997-05-15 | Metallgesellschaft Ag | Process for the production of aluminum oxide from aluminum hydroxide |
| AU2005237179B2 (en) | 2005-11-25 | 2011-03-17 | Outotec Oyj | Process and plant for producing metal oxide from metal compounds |
| DE102007014435B4 (en) | 2007-03-22 | 2014-03-27 | Outotec Oyj | Process and plant for the production of metal oxide from metal salts |
| DE102009006094B4 (en) | 2009-01-26 | 2018-10-31 | Outotec Oyj | Process and plant for the production of aluminum oxide from aluminum hydroxide |
-
2010
- 2010-11-08 DE DE102010050495.5A patent/DE102010050495B4/en active Active
-
2011
- 2011-10-24 JO JO2011320A patent/JO2879B1/en active
- 2011-10-27 UA UAA201304040A patent/UA105585C2/en unknown
- 2011-10-27 WO PCT/EP2011/068849 patent/WO2012062593A1/en not_active Ceased
- 2011-10-27 BR BR112013011240A patent/BR112013011240B8/en active IP Right Grant
- 2011-10-27 AU AU2011328390A patent/AU2011328390B2/en active Active
- 2011-10-27 EA EA201390607A patent/EA022436B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010050495B4 (en) | 2018-05-24 |
| EA201390607A1 (en) | 2013-10-30 |
| BR112013011240B8 (en) | 2023-03-28 |
| AU2011328390A1 (en) | 2013-05-02 |
| UA105585C2 (en) | 2014-05-26 |
| BR112013011240A2 (en) | 2016-11-01 |
| DE102010050495A1 (en) | 2012-05-10 |
| WO2012062593A1 (en) | 2012-05-18 |
| BR112013011240B1 (en) | 2020-12-08 |
| AU2011328390B2 (en) | 2014-08-21 |
| EA022436B1 (en) | 2015-12-30 |
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