BE851618A - Procede pour l'otention de solutions aqueuses d'acide fluosilicique d'une concentration et qualite constantes - Google Patents
Procede pour l'otention de solutions aqueuses d'acide fluosilicique d'une concentration et qualite constantesInfo
- Publication number
- BE851618A BE851618A BE175092A BE175092A BE851618A BE 851618 A BE851618 A BE 851618A BE 175092 A BE175092 A BE 175092A BE 175092 A BE175092 A BE 175092A BE 851618 A BE851618 A BE 851618A
- Authority
- BE
- Belgium
- Prior art keywords
- provision
- quality
- aqueous solutions
- constant concentration
- fluosilicic acid
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/08—Compounds containing halogen
- C01B33/10—Compounds containing silicon, fluorine, and other elements
- C01B33/103—Fluosilicic acid; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
-
- 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
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/660,294 US4008130A (en) | 1976-02-23 | 1976-02-23 | Method for distilling a ternary azeotrope of fluorosilicic acid, hydrogen fluoride and water |
Publications (1)
Publication Number | Publication Date |
---|---|
BE851618A true BE851618A (fr) | 1977-08-18 |
Family
ID=24648913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE175092A BE851618A (fr) | 1976-02-23 | 1977-02-18 | Procede pour l'otention de solutions aqueuses d'acide fluosilicique d'une concentration et qualite constantes |
Country Status (10)
Country | Link |
---|---|
US (1) | US4008130A (fr) |
JP (1) | JPS52111494A (fr) |
BE (1) | BE851618A (fr) |
CA (1) | CA1076513A (fr) |
DE (1) | DE2707487A1 (fr) |
DK (1) | DK66577A (fr) |
FR (1) | FR2341521A1 (fr) |
GB (1) | GB1538714A (fr) |
NL (1) | NL7701569A (fr) |
SE (1) | SE422781B (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3246121A1 (de) * | 1982-12-13 | 1984-06-14 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum herstellen von borfreiem siliziumdioxid |
US4470959A (en) * | 1983-06-20 | 1984-09-11 | Allied Corporation | Continuous production of silicon tetrafluoride gas in a vertical column |
US4714604A (en) * | 1986-08-13 | 1987-12-22 | The Dow Chemical Company | Method of separating HF and SiF4 from HCl |
US4980032A (en) * | 1988-08-12 | 1990-12-25 | Alameda Instruments, Inc. | Distillation method and apparatus for reprocessing sulfuric acid |
US5061348A (en) * | 1988-08-12 | 1991-10-29 | Alameda Instruments | Sulfuric acid reprocessor with continuous purge of second distillation vessel |
US4936955A (en) * | 1988-08-12 | 1990-06-26 | Alameda Instruments, Inc. | Hydrofluoric acid reprocessing for semiconductor standards |
US6793738B2 (en) * | 2002-03-28 | 2004-09-21 | General Electric Company | Method for processing acid treatment solution, solution processed thereby, and method for treating articles therewith |
DE102006040830A1 (de) * | 2006-08-31 | 2008-03-06 | Wacker Chemie Ag | Verfahren zur Aufarbeitung einer Ätzmischung, die bei der Herstellung von hochreinem Silicium anfällt |
CN103848426B (zh) * | 2014-02-25 | 2015-08-26 | 瓮福(集团)有限责任公司 | 利用真空降膜蒸发法浓缩氟硅酸的方法 |
CN104828787B (zh) * | 2015-04-09 | 2017-01-25 | 南通晨光石墨设备有限公司 | 一种混合酸的分离、浓缩工艺方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1484195A (fr) | 1959-08-10 | 1967-06-09 | Chemie Linz Ag | Procédé et dispositif pour la purification ou la concentration éventuellement continue de solutions aqueuses d'acide fluosilicique |
US3326634A (en) | 1963-12-04 | 1967-06-20 | Porter J Cheairs | Processes for recovering hydrogen fluoride |
GB1243802A (en) * | 1968-09-25 | 1971-08-25 | Mitchell Ltd L A | Purification of fluosilicic acid |
DE2035300C2 (de) * | 1970-07-16 | 1983-07-28 | Gewerkschaft Victor Chemische Werke, 4620 Castrop-Rauxel | Verfahren zur Herstellung von konzentrierter H↓2↓SiF↓6↓-Lösung |
DE2248149A1 (de) * | 1972-09-30 | 1974-04-04 | Bayer Ag | Verfahren zur aufbereitung waessriger kieselfluorwasserstoffsaeuren |
US3855399A (en) * | 1973-08-16 | 1974-12-17 | Dow Chem Bv | Process of producing hydrogen fluoride from fluosilicic acid |
-
1976
- 1976-02-23 US US05/660,294 patent/US4008130A/en not_active Expired - Lifetime
-
1977
- 1977-02-15 NL NL7701569A patent/NL7701569A/xx not_active Application Discontinuation
- 1977-02-16 DK DK66577A patent/DK66577A/da not_active Application Discontinuation
- 1977-02-18 BE BE175092A patent/BE851618A/fr not_active IP Right Cessation
- 1977-02-21 DE DE19772707487 patent/DE2707487A1/de not_active Withdrawn
- 1977-02-21 CA CA272,168A patent/CA1076513A/fr not_active Expired
- 1977-02-22 GB GB7478/77A patent/GB1538714A/en not_active Expired
- 1977-02-22 JP JP1783677A patent/JPS52111494A/ja active Pending
- 1977-02-22 FR FR7705047A patent/FR2341521A1/fr active Granted
- 1977-02-23 SE SE7702026A patent/SE422781B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US4008130A (en) | 1977-02-15 |
FR2341521B1 (fr) | 1980-12-19 |
NL7701569A (nl) | 1977-08-25 |
DE2707487A1 (de) | 1977-08-25 |
DK66577A (da) | 1977-08-24 |
GB1538714A (en) | 1979-01-24 |
JPS52111494A (en) | 1977-09-19 |
SE422781B (sv) | 1982-03-29 |
FR2341521A1 (fr) | 1977-09-16 |
CA1076513A (fr) | 1980-04-29 |
SE7702026L (sv) | 1977-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: THE DOW CHEMICAL CY Effective date: 19860228 |