FR2244713B1 - - Google Patents

Info

Publication number
FR2244713B1
FR2244713B1 FR7431870A FR7431870A FR2244713B1 FR 2244713 B1 FR2244713 B1 FR 2244713B1 FR 7431870 A FR7431870 A FR 7431870A FR 7431870 A FR7431870 A FR 7431870A FR 2244713 B1 FR2244713 B1 FR 2244713B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7431870A
Other versions
FR2244713A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of FR2244713A1 publication Critical patent/FR2244713A1/fr
Application granted granted Critical
Publication of FR2244713B1 publication Critical patent/FR2244713B1/fr
Expired legal-status Critical Current

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
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/186—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof from or via fluosilicic acid or salts thereof by a wet process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/16—Halides of ammonium
    • C01C1/162—Ammonium fluoride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)
FR7431870A 1973-09-21 1974-09-20 Expired FR2244713B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2347485A DE2347485C3 (de) 1973-09-21 1973-09-21 Verfahren zur Herstellung von Ammoniumfluorid aus Kieselfluorwasserstoffsäure

Publications (2)

Publication Number Publication Date
FR2244713A1 FR2244713A1 (fr) 1975-04-18
FR2244713B1 true FR2244713B1 (fr) 1978-03-31

Family

ID=5893214

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7431870A Expired FR2244713B1 (fr) 1973-09-21 1974-09-20

Country Status (10)

Country Link
US (1) US4026997A (fr)
JP (1) JPS5057999A (fr)
CA (1) CA1040838A (fr)
DE (1) DE2347485C3 (fr)
ES (1) ES430237A1 (fr)
FR (1) FR2244713B1 (fr)
GB (1) GB1427124A (fr)
IT (1) IT1019342B (fr)
NL (1) NL187905C (fr)
SE (1) SE7411814L (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308244A (en) * 1980-03-28 1981-12-29 Occidental Research Corp. Process for producing fluorine compounds and amorphous silica
NL8006571A (nl) * 1980-12-03 1982-07-01 Stamicarbon Werkwijze voor het winnen van een uraniumbevattend concentraat en fosforzuur, alsmede uraniumbevattend concentraat en fosforzuur verkregen volgens deze werkwijze.
DE3206766A1 (de) * 1982-02-25 1983-09-01 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von fuer solarzellen verwendbarem silizium
NL8201924A (nl) * 1982-05-11 1983-12-01 Stamicarbon Werkwijze voor het bereiden van zuiver siliciumdioxide met hoge mechanische sterkte, alsmede siliciumdioxide verkregen met deze werkwijze.
NL8204704A (nl) * 1982-12-04 1984-07-02 Stamicarbon Werkwijze voor het bereiden van zuiver siliciumdioxide.
US4915705A (en) * 1986-08-01 1990-04-10 Freeport Research And Engineering Co. Production of silica and fluorine-containing coproducts from fluosilicic acid
DE3722163A1 (de) * 1987-07-04 1989-01-12 Kali Chemie Ag Verfahren zur herstellung von nf(pfeil abwaerts)3(pfeil abwaerts)
JP3018338B2 (ja) * 1987-12-26 2000-03-13 日産化学工業株式会社 感熱記録紙用充填剤及びその製造法
US5679315A (en) * 1995-09-25 1997-10-21 Nu-West Industries, Inc. Method of production of high purity silica
CN100577568C (zh) * 2006-03-01 2010-01-06 多氟多化工股份有限公司 一种生产氟化氢铵联产白炭黑的方法
EP2359690A1 (fr) 2010-02-23 2011-08-24 East Coast Pharmaceutical Research LLC Multiplication de l'efficacité des agents anti-infectieux par une composition comprenant conjointement un agent dispersant et un agent activateur métallique
JP2012201554A (ja) * 2011-03-25 2012-10-22 Seiko Epson Corp 分離方法および分離装置
CN102491369A (zh) * 2011-12-02 2012-06-13 瓮福（集团）有限责任公司 一种回收氟资源生产氟化铵的方法
CN102887528B (zh) * 2012-10-15 2014-05-07 张军航 一种氟化氢铵的生产工艺
CN105502435B (zh) * 2015-12-18 2017-09-22 云南天安化工有限公司 一种由叔胺‑氟硅酸制备氟化铵的方法
CN109384248A (zh) * 2018-12-29 2019-02-26 贵州瓮福蓝天氟化工股份有限公司 一种降低氟化铵中氟硅酸铵的方法
CN113479907B (zh) * 2021-07-15 2022-10-18 江西省东沿药业有限公司 一种氟化铵或氟化氢铵的结晶方法
CN115403056A (zh) * 2022-09-26 2022-11-29 罗立汉 一种副产氟硅酸、稀氨水与硫酸钠综合利用方法
CN116143133A (zh) * 2022-12-29 2023-05-23 黄冈师范学院 一种制备半导体单晶硅生长用石英坩埚内层原料石英砂的方法
CN116495743A (zh) * 2023-05-12 2023-07-28 昆明理工大学 一种氟硅酸制备二氧化硅产品的方法及应用

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780522A (en) * 1953-12-17 1957-02-05 Int Minerals & Chem Corp Production of fluorine compounds
US2816818A (en) * 1954-12-31 1957-12-17 Int Minerals & Chem Corp Process for the preparation of ammonium fluoride
US3271107A (en) * 1963-07-31 1966-09-06 Int Minerals & Chem Corp Silica pigments from fluosilicic acid
US3563699A (en) * 1969-05-28 1971-02-16 Montedison Spa Process for the preparation of very pure cryolite from sodium fluosilicate and ammonia

Also Published As

Publication number Publication date
NL7412479A (nl) 1975-03-25
CA1040838A (fr) 1978-10-24
DE2347485B2 (de) 1980-01-10
IT1019342B (it) 1977-11-10
ES430237A1 (es) 1976-10-16
JPS5057999A (fr) 1975-05-20
SE7411814L (fr) 1975-03-24
NL187905C (nl) 1992-02-17
DE2347485A1 (de) 1975-04-03
FR2244713A1 (fr) 1975-04-18
NL187905B (nl) 1991-09-16
DE2347485C3 (de) 1980-09-04
US4026997A (en) 1977-05-31
GB1427124A (en) 1976-03-10

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Legal Events

Date Code Title Description
ST Notification of lapse