CN101077789A - Method for preparing aluminum fluoride - Google Patents
Method for preparing aluminum fluoride Download PDFInfo
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- CN101077789A CN101077789A CN 200610017816 CN200610017816A CN101077789A CN 101077789 A CN101077789 A CN 101077789A CN 200610017816 CN200610017816 CN 200610017816 CN 200610017816 A CN200610017816 A CN 200610017816A CN 101077789 A CN101077789 A CN 101077789A
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- Prior art keywords
- fluoride
- reaction
- aluminum fluoride
- ammonium
- temperature
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Abstract
The present invention relates to process of producing aluminum fluoride with ammonium fluoride or ammonium bifluoride and solid aluminum hydroxide as material. The process includes the following steps: gasifying ammonium fluoride or ammonium bifluoride at high temperature, mixing gaseous ammonium fluoride or ammonium bifluoride and solid aluminum hydroxide in the reaction ratio inside a fluidized bed reactor to react fast at 500-600 deg.c to produce solid aluminum fluoride product, and condensating the mixed gas of ammonia and water vapor the reaction produces to obtain ammonia water. The process is simple, and has low cost and high aluminum fluoride product quality.
Description
Technical field
The present invention relates to a kind of method of producing aluminum fluoride, relate in particular to a kind of method with Neutral ammonium fluoride or ammonium bifluoride and aluminium hydroxide solid reaction production aluminum fluoride.
Background technology
Aluminum fluoride is used as auxiliary agent in Aluminum Electrolysis Production, be used to reduce electrolytical fusing point, improve electrolytical electric conductivity.Its traditional processing technology is a hydrofluoric acid---dry process and hydrofluoric acid---wet processing.The raw material of hydrofluoric acid---dry process is hydrogen fluoride and aluminium hydroxide, its production technique is for comprising that aluminium hydroxide is carried out pre-treatment removes crystal water, the thorough mixing reaction under 500-600 ℃ temperature with powdery aluminium hydroxide and hydrogen fluoride gas then, generate aluminum trifluoride at reactor bottom, with aluminum trifluoride send into rotary drum cool off finished product; The raw material of hydrofluoric acid---wet processing is hydrofluoric acid and aluminium hydroxide, and production technique is that hydrofluoric acid and aluminum hydroxide slime react, crystallization, gets aluminum fluoride trihydrate, and drying dehydration again makes aluminium fluoride product.Above-mentioned production technique cost of material height, the production cost height, and the dry process facility investment is big, complex process.
Summary of the invention
The object of the invention is to provide a kind of method of producing aluminum fluoride, to reduce production costs greatly, simplifies production technique.
To achieve these goals, technical program of the present invention lies in adopting a kind of method of producing aluminum fluoride, with Neutral ammonium fluoride or ammonium bifluoride and aluminium hydroxide solid is raw material, to be fed in thorough mixing and rapid reaction in the fluidized-bed reactor with solid aluminum hydroxide by reaction ratio behind Neutral ammonium fluoride or the ammonium bifluoride high-temperature gasification, temperature of reaction is controlled at 500-600 ℃, reaction has generated the solid phase prod aluminum fluoride, and the Mixed Gas Condensation of ammonia and water vapour is obtained ammoniacal liquor.
Described high-temperature gasification temperature is 200-300 ℃.
Reaction formula of the present invention is:
3NH
4F+Al(OH)
3＝AlF
3+3NH
3+3H
2O
Or 3NH
4HF
2+ 2Al (OH)
3=2AlF
3+ 3NH
3+ 6H
2O
The aluminium fluoride product mass analysis result that method of the present invention is produced
| Grade | Chemical ingredients % | |||||||
| Be not less than | Impurity is not more than | |||||||
| F | Al | Na | SiO 2 | Fe 2O 3 | SO 4 2- | P 2O 5 | H 2O | |
| Special one-level | 61 | 30 | 0.5 | 0.28 | 0.10 | 0.5 | 0.04 | 0.5 |
| Special secondary | 60 | 30 | 0.5 | 0.30 | 0.13 | 0.8 | 0.04 | 1.0 |
| One-level | 58 | 28.2 | 3.0 | 0.30 | 0.13 | 1.1 | 0.04 | 6.0 |
| Secondary | 57 | 28.2 | 3.5 | 0.35 | 0.15 | 1.2 | 0.04 | 7.0 |
| Present method 1# | 61.8 | 31 | 0.2 | 0.15 | 0.01 | 0.4 | 0.01 | 0.3 |
| Present method 2# | 61.3 | 30.8 | 0.2 | 0.18 | 0.02 | 0.5 | 0.02 | 0.4 |
Method of the present invention is the raw material production aluminium fluoride product with Neutral ammonium fluoride or ammonium bifluoride and aluminium hydroxide solid, and its cost of material is low, thereby makes the cost of method of the present invention reduce greatly; Adopt the quality index of the aluminium fluoride product that method of the present invention produces to meet and exceed the requirement of the special one-level of GB, have good economic worth and social value.
Embodiment
Embodiment 1
The method of the production aluminum fluoride of present embodiment is: will be fed in thorough mixing and rapid reaction in the fluidized-bed reactor with aluminium hydroxide by reaction ratio behind the Neutral ammonium fluoride high-temperature gasification, temperature of reaction is controlled at 500 ℃, reaction has generated the solid phase prod aluminum fluoride, and the Mixed Gas Condensation of ammonia and water vapour is obtained ammoniacal liquor.
Embodiment 2
The method of the production aluminum fluoride of present embodiment is: will be fed in thorough mixing and rapid reaction in the fluidized-bed reactor with aluminium hydroxide by reaction ratio behind the ammonium bifluoride high-temperature gasification, temperature of reaction is controlled at 550 ℃, reaction has generated the solid phase prod aluminum fluoride, and the Mixed Gas Condensation of ammonia and water vapour is obtained ammoniacal liquor.
Embodiment 3
The method of the production aluminum fluoride of present embodiment is: will be fed in thorough mixing and rapid reaction in the fluidized-bed reactor with aluminium hydroxide by reaction ratio behind the Neutral ammonium fluoride high-temperature gasification, temperature of reaction is controlled at 600 ℃, reaction has generated the solid phase prod aluminum fluoride, and the Mixed Gas Condensation of ammonia and water vapour is obtained ammoniacal liquor.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1, a kind of method of producing aluminum fluoride, it is characterized in that: with Neutral ammonium fluoride or ammonium bifluoride and aluminium hydroxide solid is raw material, to be fed in thorough mixing and rapid reaction in the fluidized-bed reactor with solid aluminum hydroxide by reaction ratio behind Neutral ammonium fluoride or the ammonium bifluoride high-temperature gasification, temperature of reaction is controlled at 500-600 ℃, reaction has generated the solid phase prod aluminum fluoride, and the Mixed Gas Condensation of ammonia and water vapour is obtained ammoniacal liquor.
2, the method for production aluminum fluoride according to claim 1 is characterized in that: described high-temperature gasification temperature is 200-300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610017816 CN101077789A (en) | 2006-05-22 | 2006-05-22 | Method for preparing aluminum fluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610017816 CN101077789A (en) | 2006-05-22 | 2006-05-22 | Method for preparing aluminum fluoride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101077789A true CN101077789A (en) | 2007-11-28 |
Family
ID=38905485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610017816 Pending CN101077789A (en) | 2006-05-22 | 2006-05-22 | Method for preparing aluminum fluoride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101077789A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515203A (en) * | 2011-11-16 | 2012-06-27 | 多氟多化工股份有限公司 | Processing method of wastes produced when battery grade lithium fluoride is manufactured by adopting carbonization method |
| CN102992370A (en) * | 2011-09-14 | 2013-03-27 | 山东博丰利众化工有限公司 | High-purity aluminum fluoride production technology |
| CN103771473A (en) * | 2014-02-18 | 2014-05-07 | 贵州万方铝化科技开发有限公司 | Method for preparing small particle size Al2O3 powder |
| CN110639463A (en) * | 2019-09-29 | 2020-01-03 | 河南省睿博环境工程技术有限公司 | Intensive fluorination reactor for producing dry-process aluminum fluoride |
| CN110668482A (en) * | 2019-09-29 | 2020-01-10 | 河南省睿博环境工程技术有限公司 | Dry-process aluminum fluoride production method |
-
2006
- 2006-05-22 CN CN 200610017816 patent/CN101077789A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992370A (en) * | 2011-09-14 | 2013-03-27 | 山东博丰利众化工有限公司 | High-purity aluminum fluoride production technology |
| CN102992370B (en) * | 2011-09-14 | 2014-09-10 | 山东博丰利众化工有限公司 | High-purity aluminum fluoride production technology |
| CN102515203A (en) * | 2011-11-16 | 2012-06-27 | 多氟多化工股份有限公司 | Processing method of wastes produced when battery grade lithium fluoride is manufactured by adopting carbonization method |
| CN102515203B (en) * | 2011-11-16 | 2013-12-11 | 多氟多化工股份有限公司 | Processing method of wastes produced when battery grade lithium fluoride is manufactured by adopting carbonization method |
| CN103771473A (en) * | 2014-02-18 | 2014-05-07 | 贵州万方铝化科技开发有限公司 | Method for preparing small particle size Al2O3 powder |
| CN103771473B (en) * | 2014-02-18 | 2015-08-05 | 贵州万方铝化科技开发有限公司 | One prepares small particle size Al 2o 3the method of powder |
| CN110639463A (en) * | 2019-09-29 | 2020-01-03 | 河南省睿博环境工程技术有限公司 | Intensive fluorination reactor for producing dry-process aluminum fluoride |
| CN110668482A (en) * | 2019-09-29 | 2020-01-10 | 河南省睿博环境工程技术有限公司 | Dry-process aluminum fluoride production method |
| CN110668482B (en) * | 2019-09-29 | 2022-04-19 | 河南省睿博环境工程技术有限公司 | Dry-process aluminum fluoride production method |
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Open date: 20071128 |