IN159125B - - Google Patents
Info
- Publication number
- IN159125B IN159125B IN442/CAL/84A IN442CA1984A IN159125B IN 159125 B IN159125 B IN 159125B IN 442CA1984 A IN442CA1984 A IN 442CA1984A IN 159125 B IN159125 B IN 159125B
- Authority
- IN
- India
- Prior art keywords
- aluminum hydroxide
- solids
- fluidized bed
- alumina hydrate
- hydrogen fluoride
- Prior art date
Links
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
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
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)
- Glass Compositions (AREA)
- Catalysts (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Electrolytic Production Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Removal Of Specific Substances (AREA)
- Treating Waste Gases (AREA)
Abstract
1. A process of producing aluminum fluoride from aluminum hydroxide or alumina hydrate and hydrogen fluoride in a circulating fluidized bed system including a fluidized bed reactor, a cyclone separator and a recycling line, characterized in that partly reacted aluminum hydroxide circulated in a cooling cycle is added to fresh aluminum hydroxide or alumina hydrate in a first stage, in which the aluminum hydroxide is contacted with the hydrogen fluoride-containing exhaust gases from the circulating fluidized bed system so as to form a gas-solids suspension at a temperature of 150 to 250 degrees C, whereafter the solids are collected from the gas stream, at least part of the collected solids are passed through a cooler, cooled solids are re-contacted with fresh aluminum hydroxide or alumina hydrate, and a partial stream of the collected solids is supplied to the circulating fluidized bed system and is reacted therein at a temperature of at least 450 degrees C with hydrogen fluoride supplied in the form of a gas in a concentration up to 25 vol. %.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843405452 DE3405452A1 (en) | 1984-02-16 | 1984-02-16 | METHOD FOR PRODUCING ALUMINUM FLUORIDE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN159125B true IN159125B (en) | 1987-03-28 |
Family
ID=6227834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN442/CAL/84A IN159125B (en) | 1984-02-16 | 1984-06-25 |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0152133B1 (en) |
| JP (1) | JPS60186415A (en) |
| AT (1) | ATE32054T1 (en) |
| AU (1) | AU575121B2 (en) |
| BR (1) | BR8500675A (en) |
| CA (1) | CA1265318A (en) |
| CS (1) | CS274602B2 (en) |
| DE (2) | DE3405452A1 (en) |
| HU (1) | HU199353B (en) |
| IN (1) | IN159125B (en) |
| MA (1) | MA20348A1 (en) |
| PL (1) | PL143342B1 (en) |
| YU (1) | YU44489B (en) |
| ZA (1) | ZA851180B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4025083A1 (en) * | 1990-08-08 | 1992-02-13 | Vaw Ver Aluminium Werke Ag | METHOD FOR REPRODUCING FLUORINATE BACKPACKS |
| CN104084095A (en) * | 2014-07-04 | 2014-10-08 | 长沙矿冶研究院有限责任公司 | Vibratory fluidized bed reactor for continuous production of rare earth fluorides and production method |
| CN104163448A (en) * | 2014-07-16 | 2014-11-26 | 宁夏金和化工有限公司 | Method and device using double fluidized bed tail gas for drying aluminum hydroxide in dry method aluminum fluoride production |
| CN108840358B (en) * | 2018-09-13 | 2023-07-18 | 衢州市鼎盛化工科技有限公司 | Device and method for preparing anhydrous aluminum fluoride |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2996354A (en) * | 1956-10-11 | 1961-08-15 | Pechiney Prod Chimiques Sa | Process for treating powdered materials with gases and resultant products |
| SE366722B (en) * | 1970-01-27 | 1974-05-06 | Montedison Spa | |
| GB1290749A (en) * | 1970-05-04 | 1972-09-27 | ||
| JPS5033992B1 (en) * | 1970-12-23 | 1975-11-05 | ||
| US4160809A (en) * | 1978-07-24 | 1979-07-10 | Kaiser Aluminum & Chemical Corporation | Modified pyrohydrolysis process for spent aluminum reduction cell linings |
-
1984
- 1984-02-16 DE DE19843405452 patent/DE3405452A1/en not_active Withdrawn
- 1984-06-25 IN IN442/CAL/84A patent/IN159125B/en unknown
-
1985
- 1985-01-24 DE DE8585200071T patent/DE3561454D1/en not_active Expired
- 1985-01-24 EP EP85200071A patent/EP0152133B1/en not_active Expired
- 1985-01-24 AT AT85200071T patent/ATE32054T1/en not_active IP Right Cessation
- 1985-02-05 YU YU168/85A patent/YU44489B/en unknown
- 1985-02-08 MA MA20572A patent/MA20348A1/en unknown
- 1985-02-13 BR BR8500675A patent/BR8500675A/en not_active IP Right Cessation
- 1985-02-14 CS CS105285A patent/CS274602B2/en unknown
- 1985-02-15 CA CA000474437A patent/CA1265318A/en not_active Expired - Lifetime
- 1985-02-15 ZA ZA851180A patent/ZA851180B/en unknown
- 1985-02-15 AU AU38788/85A patent/AU575121B2/en not_active Ceased
- 1985-02-15 HU HU85572A patent/HU199353B/en not_active IP Right Cessation
- 1985-02-15 PL PL1985251971A patent/PL143342B1/en unknown
- 1985-02-16 JP JP60029179A patent/JPS60186415A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU3878885A (en) | 1985-08-22 |
| HU199353B (en) | 1990-02-28 |
| DE3561454D1 (en) | 1988-02-25 |
| YU16885A (en) | 1987-06-30 |
| EP0152133A1 (en) | 1985-08-21 |
| ATE32054T1 (en) | 1988-02-15 |
| YU44489B (en) | 1990-08-31 |
| PL251971A1 (en) | 1985-11-19 |
| BR8500675A (en) | 1985-10-01 |
| EP0152133B1 (en) | 1988-01-20 |
| JPH0446895B2 (en) | 1992-07-31 |
| AU575121B2 (en) | 1988-07-21 |
| CA1265318A (en) | 1990-02-06 |
| CS105285A2 (en) | 1990-08-14 |
| JPS60186415A (en) | 1985-09-21 |
| ZA851180B (en) | 1986-10-29 |
| MA20348A1 (en) | 1985-10-01 |
| PL143342B1 (en) | 1988-02-29 |
| CS274602B2 (en) | 1991-09-15 |
| DE3405452A1 (en) | 1985-08-22 |
| HUT36426A (en) | 1985-09-30 |
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