GB1413333A - Process for producing silica and hydrogen fluoride from waste gases containing silicon- and fluorine containing compounds - Google Patents

Process for producing silica and hydrogen fluoride from waste gases containing silicon- and fluorine containing compounds

Info

Publication number
GB1413333A
GB1413333A GB4970372A GB4970372A GB1413333A GB 1413333 A GB1413333 A GB 1413333A GB 4970372 A GB4970372 A GB 4970372A GB 4970372 A GB4970372 A GB 4970372A GB 1413333 A GB1413333 A GB 1413333A
Authority
GB
United Kingdom
Prior art keywords
sif
water
sulphuric acid
sio
acid
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
Application number
GB4970372A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1413333A publication Critical patent/GB1413333A/en
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
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane
    • C01B33/184—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane by hydrolysis of tetrafluoride
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Silicon Compounds (AREA)
GB4970372A 1971-10-28 1972-10-27 Process for producing silica and hydrogen fluoride from waste gases containing silicon- and fluorine containing compounds Expired GB1413333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19346771A 1971-10-28 1971-10-28

Publications (1)

Publication Number Publication Date
GB1413333A true GB1413333A (en) 1975-11-12

Family

ID=22713763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4970372A Expired GB1413333A (en) 1971-10-28 1972-10-27 Process for producing silica and hydrogen fluoride from waste gases containing silicon- and fluorine containing compounds

Country Status (8)

Country Link
BE (1) BE790472A (nl)
CA (1) CA979179A (nl)
DE (1) DE2251787C2 (nl)
FR (1) FR2158314B1 (nl)
GB (1) GB1413333A (nl)
IT (1) IT975395B (nl)
NL (1) NL170402C (nl)
SE (1) SE396060B (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2300201A1 (es) * 2006-11-15 2008-06-01 Casals Cardona Industrial, S.A. Procedimiento de depuracion de gases residuales que contienen metil mercaptano, particulas solidas y tetrafluoruro de silicio, con produccion de un efluente revalorizable.
CN107601434A (zh) * 2017-11-07 2018-01-19 衢州市鼎盛化工科技有限公司 一种由氟硅酸制备氟化氢的方法及设备
CN108816029A (zh) * 2018-08-02 2018-11-16 浙江中宁硅业有限公司 一种利用低浓度hf酸处理四氟化硅气体的方法及其处理设备
CN114988920A (zh) * 2022-04-20 2022-09-02 贵州新东浩化工材料科技有限公司 一种分级利用磷矿石中氟、硅资源的方法
US11891344B2 (en) 2022-04-20 2024-02-06 Chtem Limited Methods for graded utilization of fluorine and silicon resources in phosphate ores

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206766A1 (de) * 1982-02-25 1983-09-01 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von fuer solarzellen verwendbarem silizium
CN112551531A (zh) * 2020-11-24 2021-03-26 浙江巨化技术中心有限公司 一种联产氟化氢、白炭黑和硫酸钾的方法
CN114920202B (zh) * 2022-05-31 2023-06-06 江西天行化工有限责任公司 一种氟化氢制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819151A (en) * 1954-03-02 1958-01-07 Flemmert Gosta Lennart Process for burning silicon fluorides to form silica
US2833628A (en) * 1954-06-09 1958-05-06 Grace W R & Co Manufacture of silicon tetrafluoride
NL139012B (nl) * 1961-10-02 1973-06-15 Stauffer Chemical Co Werkwijze voor het winnen van het fluor in de vorm van geconcentreerd waterstoffluoride.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2300201A1 (es) * 2006-11-15 2008-06-01 Casals Cardona Industrial, S.A. Procedimiento de depuracion de gases residuales que contienen metil mercaptano, particulas solidas y tetrafluoruro de silicio, con produccion de un efluente revalorizable.
CN107601434A (zh) * 2017-11-07 2018-01-19 衢州市鼎盛化工科技有限公司 一种由氟硅酸制备氟化氢的方法及设备
CN108816029A (zh) * 2018-08-02 2018-11-16 浙江中宁硅业有限公司 一种利用低浓度hf酸处理四氟化硅气体的方法及其处理设备
CN108816029B (zh) * 2018-08-02 2023-10-13 浙江中宁硅业有限公司 一种利用低浓度hf酸处理四氟化硅气体的方法及其处理设备
CN114988920A (zh) * 2022-04-20 2022-09-02 贵州新东浩化工材料科技有限公司 一种分级利用磷矿石中氟、硅资源的方法
US11891344B2 (en) 2022-04-20 2024-02-06 Chtem Limited Methods for graded utilization of fluorine and silicon resources in phosphate ores

Also Published As

Publication number Publication date
NL7214517A (nl) 1973-05-02
NL170402B (nl) 1982-06-01
BE790472A (fr) 1973-02-15
DE2251787C2 (de) 1982-08-26
SE396060B (sv) 1977-09-05
CA979179A (en) 1975-12-09
FR2158314A1 (nl) 1973-06-15
DE2251787A1 (de) 1973-05-10
FR2158314B1 (nl) 1977-12-23
NL170402C (nl) 1982-11-01
IT975395B (it) 1974-07-20

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years