ES2060761T3 - Metodo de produccion de silice y fluoruro de amonio muy puros. - Google Patents
Metodo de produccion de silice y fluoruro de amonio muy puros.Info
- Publication number
- ES2060761T3 ES2060761T3 ES89303536T ES89303536T ES2060761T3 ES 2060761 T3 ES2060761 T3 ES 2060761T3 ES 89303536 T ES89303536 T ES 89303536T ES 89303536 T ES89303536 T ES 89303536T ES 2060761 T3 ES2060761 T3 ES 2060761T3
- Authority
- ES
- Spain
- 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 - Lifetime
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)
Abstract
EN EL METODO DESCRITO SE PARTE DE UN GAS QUE CONTIENE F4SI PROCEDENTE DE LA ACIDULACION DE ROCAS FOSFORADAS, QUE SE RECUPERA Y EL LIQUIDO DE ARRASTRE SE SEPARA DEL GAS. EL GAS RECUPERADO SE CONVIERTE EN DISOLUCION DE FLUOSILICATO AMONICO Y SE TRATA CON NH3 PARA PRODUCIR SILICE DE ALTA PUREZA Y FNH4. EL GAS RECUPERADO SE PUEDE CONVERTIR EN SOLUCION DE FLUOSILICATO AMONICO O ABSORBIENDO EL GAS DIRECTAMENTE EN UNA SOLUCION DE FNH4 O POR ABSORCION EN AGUA PARA PRODUCIR ACIDO FLUOSILICICO Y REACCION DE ESTE CON NH3 O FNH4. EN UN SEGUNDO ASPECTO LA INVENCION PROPORCIONA UN METODO PARA RECUPERAR SEPARADAMENTE SILICE DE ALTA PUREZA Y FNH4 A PARTIR DE UNA SOLUCION ACUOSA IMPURA DE ACIDO FLUOSILICICO POR REACCION CON NH3 O FNH4 DURANTE UN TIEMPO, Y A UNA TEMPERATURA SUFICIENTE PARA FORMAR UNA DISOLUCION DE FLUOSILICATO AMONICO, RECUPERAR ESTE DE LA DISOLUCION, PURIFICARLO POR DISOLUCION EN AGUA O EN DISOLUCION DE FLUOSILICATO AMONICO DE ALTA PUREZA, RECRISTALIZARLO Y RECUPERAR DE LA SOLUCION LOS CRISTALES PURIFICADOS, DISOLVERLOS DE NUEVO Y AMONIACARLOS DURANTE UN TIEMPO Y A TEMPERATURA SUFICIENTES PARA PRECIPITAR LA SILICE Y RECUPERAR SEPARADAMENTE SILICE DE ALTA PUREZA Y FNH4.
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 (1)
Publication Number | Publication Date |
---|---|
ES2060761T3 true ES2060761T3 (es) | 1994-12-01 |
Family
ID=22664039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES89303536T Expired - Lifetime ES2060761T3 (es) | 1988-04-14 | 1989-04-11 | Metodo de produccion de silice y fluoruro de amonio muy puros. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4981664A (es) |
EP (2) | EP0337712B1 (es) |
JP (1) | JPH0214808A (es) |
AT (1) | ATE107610T1 (es) |
DE (1) | DE68916309T2 (es) |
ES (1) | ES2060761T3 (es) |
Families Citing this family (25)
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 (es) * | 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 |
AU2006283664B2 (en) | 2005-08-19 | 2012-04-12 | Houghton Technical Corp. | 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 |
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 |
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 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3273713A (en) * | 1966-09-20 | Removal of fluorine compounds from phosphoric acid | ||
US461665A (en) * | 1891-10-20 | Process of producing hydrofluosilicic 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 (es) * | 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 |
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 |
US4107264A (en) * | 1977-11-14 | 1978-08-15 | Allied Chemical Corporation | Recovery of TiO2 from ilmenite-type ore by a membrane based electrodialysis process |
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 |
-
1988
- 1988-04-14 US US07/181,380 patent/US4981664A/en not_active Expired - Lifetime
-
1989
- 1989-04-11 EP EP89303536A patent/EP0337712B1/en not_active Expired - Lifetime
- 1989-04-11 AT AT89303536T patent/ATE107610T1/de not_active IP Right Cessation
- 1989-04-11 DE DE68916309T patent/DE68916309T2/de not_active Expired - Fee Related
- 1989-04-11 EP EP93200586A patent/EP0555940A1/en not_active Withdrawn
- 1989-04-11 ES ES89303536T patent/ES2060761T3/es not_active Expired - Lifetime
- 1989-04-14 JP JP1095080A patent/JPH0214808A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE68916309D1 (de) | 1994-07-28 |
EP0337712A2 (en) | 1989-10-18 |
DE68916309T2 (de) | 1994-11-17 |
EP0337712B1 (en) | 1994-06-22 |
EP0555940A1 (en) | 1993-08-18 |
EP0337712A3 (en) | 1990-12-12 |
US4981664A (en) | 1991-01-01 |
JPH0214808A (ja) | 1990-01-18 |
ATE107610T1 (de) | 1994-07-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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