IT975395B - PROCEDURE FOR CONVERTING EXHAUST GASES CONTAINING SILICON AND FLUORIDE INTO SILICON DIOXIDE AND HYDROGEN FLUORIDE - Google Patents
PROCEDURE FOR CONVERTING EXHAUST GASES CONTAINING SILICON AND FLUORIDE INTO SILICON DIOXIDE AND HYDROGEN FLUORIDEInfo
- Publication number
- IT975395B IT975395B IT7039572A IT7039572A IT975395B IT 975395 B IT975395 B IT 975395B IT 7039572 A IT7039572 A IT 7039572A IT 7039572 A IT7039572 A IT 7039572A IT 975395 B IT975395 B IT 975395B
- Authority
- IT
- Italy
- Prior art keywords
- fluoride
- procedure
- exhaust gases
- gases containing
- silicon
- Prior art date
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19346771A | 1971-10-28 | 1971-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT975395B true IT975395B (en) | 1974-07-20 |
Family
ID=22713763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT7039572A IT975395B (en) | 1971-10-28 | 1972-10-27 | PROCEDURE FOR CONVERTING EXHAUST GASES CONTAINING SILICON AND FLUORIDE INTO SILICON DIOXIDE AND HYDROGEN FLUORIDE |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE790472A (en) |
| CA (1) | CA979179A (en) |
| DE (1) | DE2251787C2 (en) |
| FR (1) | FR2158314B1 (en) |
| GB (1) | GB1413333A (en) |
| IT (1) | IT975395B (en) |
| NL (1) | NL170402C (en) |
| SE (1) | SE396060B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3206766A1 (en) * | 1982-02-25 | 1983-09-01 | Siemens AG, 1000 Berlin und 8000 München | METHOD FOR PRODUCING SILICON USED FOR SOLAR CELLS |
| ES2300201B1 (en) * | 2006-11-15 | 2009-06-05 | Casals Cardona Industrial, S.A. | RESIDUAL GASES CLEANING PROCEDURE CONTAINING METAL MERCAPTAN, SOLID PARTICLES AND SILICON TETRAFLUORIDE, WITH PRODUCTION OF A REVALUABLE EFFLUENT. |
| CN107601434A (en) * | 2017-11-07 | 2018-01-19 | 衢州市鼎盛化工科技有限公司 | A kind of method and apparatus that hydrogen fluoride is prepared by fluosilicic acid |
| CN108816029B (en) * | 2018-08-02 | 2023-10-13 | 浙江中宁硅业有限公司 | Method for treating silicon tetrafluoride gas by using low-concentration HF acid and treatment equipment thereof |
| CN112551531A (en) * | 2020-11-24 | 2021-03-26 | 浙江巨化技术中心有限公司 | Method for coproducing hydrogen fluoride, white carbon black and potassium sulfate |
| CN114988920B (en) * | 2022-04-20 | 2023-01-13 | 贵州新东浩化工材料科技有限公司 | Method for utilizing fluorine and silicon resources in phosphate ore in grading manner |
| US11891344B2 (en) | 2022-04-20 | 2024-02-06 | Chtem Limited | Methods for graded utilization of fluorine and silicon resources in phosphate ores |
| CN114920202B (en) * | 2022-05-31 | 2023-06-06 | 江西天行化工有限责任公司 | Preparation method of hydrogen fluoride |
| CN116425167B (en) * | 2023-04-19 | 2024-07-16 | 贵州瓮福蓝天氟化工股份有限公司 | Concentration method and system of fluosilicic acid solution |
| CN117509548B (en) * | 2023-12-04 | 2024-07-05 | 云南氟磷电子科技有限公司 | Method for preparing hydrofluoric acid and co-producing white carbon black by fluosilicic acid |
Family Cites Families (3)
| 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 (en) * | 1961-10-02 | 1973-06-15 | Stauffer Chemical Co | PROCEDURE FOR THE WINNING OF THE FLUOR IN THE FORM OF CONCENTRATED HYDROGEN FLUORIDE. |
-
0
- BE BE790472D patent/BE790472A/en not_active IP Right Cessation
-
1972
- 1972-09-27 CA CA152,675A patent/CA979179A/en not_active Expired
- 1972-10-21 DE DE19722251787 patent/DE2251787C2/en not_active Expired
- 1972-10-23 SE SE1363572A patent/SE396060B/en unknown
- 1972-10-26 NL NL7214517A patent/NL170402C/en not_active IP Right Cessation
- 1972-10-27 IT IT7039572A patent/IT975395B/en active
- 1972-10-27 FR FR7238217A patent/FR2158314B1/fr not_active Expired
- 1972-10-27 GB GB4970372A patent/GB1413333A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2158314A1 (en) | 1973-06-15 |
| BE790472A (en) | 1973-02-15 |
| GB1413333A (en) | 1975-11-12 |
| CA979179A (en) | 1975-12-09 |
| NL170402B (en) | 1982-06-01 |
| NL170402C (en) | 1982-11-01 |
| NL7214517A (en) | 1973-05-02 |
| DE2251787A1 (en) | 1973-05-10 |
| DE2251787C2 (en) | 1982-08-26 |
| SE396060B (en) | 1977-09-05 |
| FR2158314B1 (en) | 1977-12-23 |
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