WO2007055570A3 - Process for preparing a metal hydroxide - Google Patents
Process for preparing a metal hydroxide Download PDFInfo
- Publication number
- WO2007055570A3 WO2007055570A3 PCT/NL2006/000563 NL2006000563W WO2007055570A3 WO 2007055570 A3 WO2007055570 A3 WO 2007055570A3 NL 2006000563 W NL2006000563 W NL 2006000563W WO 2007055570 A3 WO2007055570 A3 WO 2007055570A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal hydroxide
- solution
- preparing
- remaining solution
- remaining
- 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
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
-
- 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
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
- C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
- C01F11/12—Oxides or hydroxides from silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
Abstract
The invention provides a process for preparing a metal hydroxide comprising the steps of: (a) providing particles of a metal silicate; (b) mixing the particles with a mineral acid solution to obtain a slurry which comprises precipitated silica; (c) separating the precipitated silica from the slurry to obtain a remaining solution; (d) increasing the pH of the remaining solution to such an extent that a metal hydroxide is formed; (e) separating the metal hydroxide so obtained from the remaining solution; and (f) adding to the remaining solution obtained in step (e) an acid solution, thereby forming a salt containing solution, or (g) removing at least part of the base added in step (d) from the remaining solution obtained in step (e), thereby forming a salt containing solution.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06824257A EP1954630A2 (en) | 2005-11-09 | 2006-11-09 | Process for preparing a metal hydroxide |
US12/092,776 US20090214416A1 (en) | 2005-11-09 | 2006-11-09 | Process for preparing a metal hydroxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05077552A EP1785396A1 (en) | 2005-11-09 | 2005-11-09 | Process for preparing a metal hydroxide |
EP05077552.7 | 2005-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007055570A2 WO2007055570A2 (en) | 2007-05-18 |
WO2007055570A3 true WO2007055570A3 (en) | 2007-07-12 |
Family
ID=36568960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2006/000563 WO2007055570A2 (en) | 2005-11-09 | 2006-11-09 | Process for preparing a metal hydroxide |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090214416A1 (en) |
EP (2) | EP1785396A1 (en) |
WO (1) | WO2007055570A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0922386D0 (en) * | 2009-12-22 | 2010-02-03 | Univ Nottingham | Improvements in or relating to the capture of carbon dioxide |
US20110158873A1 (en) * | 2010-01-22 | 2011-06-30 | Rutgers, The State University Of New Jersey | Sequestration of a gas emitted by an industrial plant |
CN108439440A (en) * | 2018-06-05 | 2018-08-24 | 张勤福 | The technique for producing magnesia using peridotite ore |
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US4944928A (en) * | 1987-06-26 | 1990-07-31 | Veitscher Magnestiwerke-Actien-Gesellschaft | Process for producing pure magnesium oxide |
WO1992012097A1 (en) * | 1990-12-26 | 1992-07-23 | The Dow Chemical Company | Magnesium hydroxide having stacked layer, crystalline structure and process therefor |
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-
2005
- 2005-11-09 EP EP05077552A patent/EP1785396A1/en not_active Withdrawn
-
2006
- 2006-11-09 EP EP06824257A patent/EP1954630A2/en not_active Withdrawn
- 2006-11-09 WO PCT/NL2006/000563 patent/WO2007055570A2/en active Application Filing
- 2006-11-09 US US12/092,776 patent/US20090214416A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1454583A (en) * | 1920-11-11 | 1923-05-08 | Norske Saltverker As De | Process of producing magnesium nitrate |
US2549798A (en) * | 1947-01-17 | 1951-04-24 | Edwin A Gee | Production of magnesium chloride from magnesium silicate ore |
US3711600A (en) * | 1970-12-22 | 1973-01-16 | Atomic Energy Commission | Process for preparing calcined oxides |
DE2228921A1 (en) * | 1971-06-18 | 1972-12-21 | Rikkihappo Oy, Helsinki | A process for the utilization of contaminated diluted or concentrated dissolved mineral acid obtained as a waste product for the manufacture of fertilizers |
US4289736A (en) * | 1978-10-18 | 1981-09-15 | Universite De Sherbrooke | Filtering of precipitating silica |
US4944928A (en) * | 1987-06-26 | 1990-07-31 | Veitscher Magnestiwerke-Actien-Gesellschaft | Process for producing pure magnesium oxide |
WO1992012097A1 (en) * | 1990-12-26 | 1992-07-23 | The Dow Chemical Company | Magnesium hydroxide having stacked layer, crystalline structure and process therefor |
WO2002048036A1 (en) * | 2000-11-02 | 2002-06-20 | Silica Tech Ans | Extraction of silica and magnesium compounds from olivine |
WO2004048264A2 (en) * | 2002-11-27 | 2004-06-10 | Idntaeknistofnun Islands | A process for production of silica from olivine |
WO2005068363A1 (en) * | 2004-01-14 | 2005-07-28 | Cod Technologies A.S. | Process for production of precipitated silica from olivine |
Non-Patent Citations (1)
Title |
---|
CHEMICAL ABSTRACTS, vol. 90, no. 22, 28 May 1979, Columbus, Ohio, US; abstract no. 174240b, W. REJMENT ET AL.: "Treatment of industrial effluents containing nitrates" page 362; XP001296713 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007055570A2 (en) | 2007-05-18 |
US20090214416A1 (en) | 2009-08-27 |
EP1785396A1 (en) | 2007-05-16 |
EP1954630A2 (en) | 2008-08-13 |
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