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 constantes

Info

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
Application number
BE175092A
Other languages
English (en)
French (fr)
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of BE851618A publication Critical patent/BE851618A/xx

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)
BE175092A 1976-02-23 1977-02-18 Procede pour l'otention de solutions aqueuses d'acide fluosilicique d'une concentration et qualite constantes BE851618A (fr)

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 (da)
JP (1) JPS52111494A (da)
BE (1) BE851618A (da)
CA (1) CA1076513A (da)
DE (1) DE2707487A1 (da)
DK (1) DK66577A (da)
FR (1) FR2341521A1 (da)
GB (1) GB1538714A (da)
NL (1) NL7701569A (da)
SE (1) SE422781B (da)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
US5061348A (en) * 1988-08-12 1991-10-29 Alameda Instruments Sulfuric acid reprocessor with continuous purge of second distillation vessel
US4980032A (en) * 1988-08-12 1990-12-25 Alameda Instruments, Inc. Distillation method and apparatus for reprocessing sulfuric acid
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
GB1538714A (en) 1979-01-24
CA1076513A (en) 1980-04-29
NL7701569A (nl) 1977-08-25
SE7702026L (sv) 1977-08-24
FR2341521A1 (fr) 1977-09-16
FR2341521B1 (da) 1980-12-19
SE422781B (sv) 1982-03-29
US4008130A (en) 1977-02-15
JPS52111494A (en) 1977-09-19
DE2707487A1 (de) 1977-08-25
DK66577A (da) 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