CA2300615A1 - Continuous production of activated silica - Google Patents
Continuous production of activated silica Download PDFInfo
- Publication number
- CA2300615A1 CA2300615A1 CA 2300615 CA2300615A CA2300615A1 CA 2300615 A1 CA2300615 A1 CA 2300615A1 CA 2300615 CA2300615 CA 2300615 CA 2300615 A CA2300615 A CA 2300615A CA 2300615 A1 CA2300615 A1 CA 2300615A1
- Authority
- CA
- Canada
- Prior art keywords
- activated silica
- carbonic acid
- sodium silicate
- reactor
- continuous production
- 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.)
- Granted
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
Provided is a method and apparatus for continuously producing activated silica from sodium silicate using carbon dioxide. The method comprises dissolving carbon dioxide in water to form carbonic acid and then reacting the carbonic acid with sodium silicate to produce activated silica in a reactor. The carbonic acid and sodium silicate are contacted under turbulent hydraulic conditions. The prevention of scale build ups can be achieved by using flexible tubing in the reactor. It is also preferred that a holding tank be employed in which the reaction is allowed to continue.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12414199P | 1999-03-12 | 1999-03-12 | |
US60/124,141 | 1999-03-12 | ||
US51562900A | 2000-02-29 | 2000-02-29 | |
US09/515,629 | 2000-02-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2300615A1 true CA2300615A1 (en) | 2000-09-12 |
CA2300615C CA2300615C (en) | 2009-08-25 |
Family
ID=26822246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2300615 Expired - Lifetime CA2300615C (en) | 1999-03-12 | 2000-03-10 | Continuous production of activated silica |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2300615C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006058855A2 (en) * | 2004-12-01 | 2006-06-08 | Ciba Specialty Chemicals Water Treatments Limited | High velocity, low pressure process for making silica gels and microgels |
CN104828831A (en) * | 2015-06-05 | 2015-08-12 | 确成硅化学股份有限公司 | Method for continuously producing white carbon black |
DE102017123807A1 (en) * | 2017-10-12 | 2019-04-18 | Chemische Fabrik Budenheim Kg | Improved process for carbon dioxide extraction of phosphates from raw materials |
CN111661849A (en) * | 2020-06-11 | 2020-09-15 | 昆明冶金高等专科学校 | Method for preparing food-grade white carbon black by inorganic acid fractional precipitation method |
-
2000
- 2000-03-10 CA CA 2300615 patent/CA2300615C/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006058855A2 (en) * | 2004-12-01 | 2006-06-08 | Ciba Specialty Chemicals Water Treatments Limited | High velocity, low pressure process for making silica gels and microgels |
WO2006058855A3 (en) * | 2004-12-01 | 2006-09-08 | Ciba Spec Chem Water Treat Ltd | High velocity, low pressure process for making silica gels and microgels |
US7504084B2 (en) | 2004-12-01 | 2009-03-17 | Ciba Specialty Chemicals Corporation | High velocity, low pressure process for making silica gels and microgels |
CN101068747B (en) * | 2004-12-01 | 2010-12-22 | 西巴特殊化学水处理有限公司 | High velocity, low pressure process for making silica gels and microgels |
CN104828831A (en) * | 2015-06-05 | 2015-08-12 | 确成硅化学股份有限公司 | Method for continuously producing white carbon black |
DE102017123807A1 (en) * | 2017-10-12 | 2019-04-18 | Chemische Fabrik Budenheim Kg | Improved process for carbon dioxide extraction of phosphates from raw materials |
CN111661849A (en) * | 2020-06-11 | 2020-09-15 | 昆明冶金高等专科学校 | Method for preparing food-grade white carbon black by inorganic acid fractional precipitation method |
Also Published As
Publication number | Publication date |
---|---|
CA2300615C (en) | 2009-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20200310 |