DE68916309D1 - Verfahren zur Herstellung von sehr reiner Kieselsäure und von reinem Ammoniumfluorid. - Google Patents

Verfahren zur Herstellung von sehr reiner Kieselsäure und von reinem Ammoniumfluorid.

Info

Publication number
DE68916309D1
DE68916309D1 DE68916309T DE68916309T DE68916309D1 DE 68916309 D1 DE68916309 D1 DE 68916309D1 DE 68916309 T DE68916309 T DE 68916309T DE 68916309 T DE68916309 T DE 68916309T DE 68916309 D1 DE68916309 D1 DE 68916309D1
Authority
DE
Germany
Prior art keywords
solution
ammonium
ammonium fluoride
gas
fluosilicate
Prior art date
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 - Fee Related
Application number
DE68916309T
Other languages
English (en)
Other versions
DE68916309T2 (de
Inventor
Paul C Chieng
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.)
Mallinckrodt Inc
Original Assignee
International Minerals and Chemical Corp
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 International Minerals and Chemical Corp filed Critical International Minerals and Chemical Corp
Application granted granted Critical
Publication of DE68916309D1 publication Critical patent/DE68916309D1/de
Publication of DE68916309T2 publication Critical patent/DE68916309T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
DE68916309T 1988-04-14 1989-04-11 Verfahren zur Herstellung von sehr reiner Kieselsäure und von reinem Ammoniumfluorid. Expired - Fee Related DE68916309T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/181,380 US4981664A (en) 1988-04-14 1988-04-14 Method of production of high purity silica and ammonium fluoride

Publications (2)

Publication Number Publication Date
DE68916309D1 true DE68916309D1 (de) 1994-07-28
DE68916309T2 DE68916309T2 (de) 1994-11-17

Family

ID=22664039

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68916309T Expired - Fee Related DE68916309T2 (de) 1988-04-14 1989-04-11 Verfahren zur Herstellung von sehr reiner Kieselsäure und von reinem Ammoniumfluorid.

Country Status (6)

Country Link
US (1) US4981664A (de)
EP (2) EP0337712B1 (de)
JP (1) JPH0214808A (de)
AT (1) ATE107610T1 (de)
DE (1) DE68916309T2 (de)
ES (1) ES2060761T3 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5165907A (en) * 1988-04-14 1992-11-24 Imcera Group Inc. Method of production of high purity silica and ammonium fluoride
US5266289A (en) * 1989-11-16 1993-11-30 Nissan Chemical Industries Ltd. Process for producing high-purity silica by reacting crude silica with ammonium fluoride
TW225511B (de) * 1989-12-14 1994-06-21 Nissan Chemical Ind Ltd
US5028407A (en) * 1990-01-25 1991-07-02 International Minerals & Chemical Corp. Method of production of high purity fusible silica
US5679315A (en) * 1995-09-25 1997-10-21 Nu-West Industries, Inc. Method of production of high purity silica
US6193944B1 (en) 1995-12-08 2001-02-27 Goldendale Aluminum Company Method of recovering fumed silica from spent potliner
US6217840B1 (en) 1995-12-08 2001-04-17 Goldendale Aluminum Company Production of fumed silica
US5853685A (en) * 1996-08-28 1998-12-29 Erickson; William R. Process for the production of high purity silica from waste by-product silica and hydrogen fluoride
US6248302B1 (en) 2000-02-04 2001-06-19 Goldendale Aluminum Company Process for treating red mud to recover metal values therefrom
US7250081B2 (en) * 2003-12-04 2007-07-31 Honeywell International, Inc. Methods for repair of single crystal superalloys by laser welding and products thereof
US20070066503A1 (en) 2005-08-19 2007-03-22 Mores Basaly Methods and compositions for acid treatment of a metal surface
CN1884077B (zh) * 2006-07-07 2010-08-18 贵州省化工研究院 一种氟硅化合物的氨解及氟硅元素的分离方法
BRPI0904351A2 (pt) * 2009-10-09 2011-06-14 Quirios Produtos Quimicos S A processo para a produÇço de fluoretos inorgÂnicos e sÍlica precipitada amorfa a partir de Ácido fluosilÍcico
TWI434725B (zh) * 2011-03-08 2014-04-21 Asia Union Electronical Chemical Corp 利用氫氧基化合物和離子交換樹脂吸附以純化氟酸系蝕刻液的處理方法
JP2012193074A (ja) * 2011-03-16 2012-10-11 Seiko Epson Corp 分離方法および分離装置
JP2012201554A (ja) * 2011-03-25 2012-10-22 Seiko Epson Corp 分離方法および分離装置
CN102557040B (zh) * 2011-12-14 2013-10-23 铜陵化学工业集团有限公司 一种磷肥副产氟硅酸的综合利用方法
CN102887532B (zh) * 2012-11-13 2014-04-16 湖南有色氟化学科技发展有限责任公司 一种氟硅酸制备氟化钾并联产白炭黑的工艺
CN105366643B (zh) * 2015-12-18 2018-04-10 云南省化工研究院 一种溶剂萃取稀氟硅酸制备氟化盐联产白炭黑的方法
RU2614770C1 (ru) * 2016-02-29 2017-03-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Башкирский государственный университет" Способ получения кремнефторида аммония
JP6095837B1 (ja) * 2016-04-01 2017-03-15 佐々木化学薬品株式会社 アルカリ金属塩含有成型体およびそれを用いた酸性水溶液の再生処理方法
CN110451513B (zh) * 2019-07-09 2020-12-04 武汉工程大学 一种湿法磷酸连续反应结晶制备大颗粒工业级磷酸脲产品的方法
CN111762797A (zh) * 2019-12-31 2020-10-13 承德莹科精细化工股份有限公司 一种以氟硅酸为原料制备低硅氟化氢铵的生产工艺
CN112320803B (zh) * 2020-10-27 2022-05-13 贵州省化工研究院 一种利用磷酸中氟硅酸生产固体氟硅酸铵的方法
CN112320817B (zh) * 2020-10-27 2022-05-13 贵州省化工研究院 一种利用磷酸中氟硅酸生产固体氟化铵的方法

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US461665A (en) * 1891-10-20 Process of producing hydrofluosilicic acid
US3273713A (en) * 1966-09-20 Removal of fluorine compounds from phosphoric acid
US2768063A (en) * 1953-02-05 1956-10-23 Corning Glass Works Method of preparing silica
US2780524A (en) * 1953-12-17 1957-02-05 Int Minerals & Chem Corp Process for production of substantially phosphate-free ammonium silicofluoride from den gas
US3021194A (en) * 1959-01-16 1962-02-13 Grace W R & Co Production of ammonium hydrogen fluoride
US3111384A (en) * 1960-03-23 1963-11-19 Chemwest Inc Silica manufacture
NL267418A (de) * 1960-08-01
US3128152A (en) * 1961-10-10 1964-04-07 Cabot Corp Process for recovering hydrogen fluoride from aqueous fluosilicic acid solution
US3195979A (en) * 1961-12-18 1965-07-20 Int Minerals & Chem Corp Process of preparing hydrogen fluoride from fluosilicic acid
US3256061A (en) * 1962-06-14 1966-06-14 Hooker Chemical Corp Recovery of hydrogen fluoride
US3271107A (en) * 1963-07-31 1966-09-06 Int Minerals & Chem Corp Silica pigments from fluosilicic acid
US3316060A (en) * 1964-05-27 1967-04-25 Hooker Chemical Corp Recovery of anhydrous hydrogen fluoride from gaseous mixtures
US3338673A (en) * 1964-10-02 1967-08-29 Hooker Chemical Corp Recovery of substantially anhydrous hydrogen fluoride from an impure aqueous ammonium fluoride solution
DE2248149A1 (de) * 1972-09-30 1974-04-04 Bayer Ag Verfahren zur aufbereitung waessriger kieselfluorwasserstoffsaeuren
US4046860A (en) * 1973-05-14 1977-09-06 Kidde Gustave E Ammonium fluoride process for defluorinating phosphoric acids and production of ammonium fluosilicate
US3855399A (en) * 1973-08-16 1974-12-17 Dow Chem Bv Process of producing hydrogen fluoride from fluosilicic acid
US3914398A (en) * 1974-12-16 1975-10-21 Du Pont Process for making anhydrous hydrogen fluoride from fluosilicic acid
IE44470B1 (en) * 1976-08-26 1981-12-16 Goulding Chemicals Ltd Production of hydrogen fluoride
US4107264A (en) * 1977-11-14 1978-08-15 Allied Chemical Corporation Recovery of TiO2 from ilmenite-type ore by a membrane based electrodialysis process
US4144158A (en) * 1977-11-14 1979-03-13 Allied Chemical Corporation Process for manufacture of anhydrous hydrogen fluoride and finely divided silica from fluosilicic acid
US4298586A (en) * 1978-10-23 1981-11-03 Occidental Research Corp. Recovery of hydrofluoric acid from fluosilicic acid
US4308244A (en) * 1980-03-28 1981-12-29 Occidental Research Corp. Process for producing fluorine compounds and amorphous silica
NL8201925A (nl) * 1982-05-11 1983-12-01 Unie Van Kunstmestfab Bv Werkwijze voor het bereiden van zuiver siliciumdioxide, alsmede siliciumdioxide verkregen met deze werkwijze.
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.
US4655789A (en) * 1985-05-08 1987-04-07 Freeport Research And Engineering Company Phosphoric acid crystallization process

Also Published As

Publication number Publication date
US4981664A (en) 1991-01-01
EP0555940A1 (de) 1993-08-18
EP0337712B1 (de) 1994-06-22
ES2060761T3 (es) 1994-12-01
DE68916309T2 (de) 1994-11-17
JPH0214808A (ja) 1990-01-18
EP0337712A3 (en) 1990-12-12
EP0337712A2 (de) 1989-10-18
ATE107610T1 (de) 1994-07-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MALLINCKRODT GROUP INC., NORTHBROOK, ILL., US

8339 Ceased/non-payment of the annual fee