GB790286A - Improvements in or relating to the production of alkali metal silicates - Google Patents
Improvements in or relating to the production of alkali metal silicatesInfo
- Publication number
- GB790286A GB790286A GB37682/54A GB3768254A GB790286A GB 790286 A GB790286 A GB 790286A GB 37682/54 A GB37682/54 A GB 37682/54A GB 3768254 A GB3768254 A GB 3768254A GB 790286 A GB790286 A GB 790286A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- mixture
- sio2 ratio
- sio2
- na2o
- 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
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
- C01B33/20—Silicates
- C01B33/32—Alkali metal silicates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Alkali metal silicates having a M2O : SiO2 ratio of 1.65 : 1 to 2.25 : 1 are prepared by mixing at 90-160 DEG C. an alkali metal silicate solution having a M2O : SiO2 ratio of 1 : 1 to 1 : 3.4 with an alkali metal hydroxide solution of 55 to 74 per cent strength in quantities calculated to produce a mixture having a M2O : SiO2 ratio of at least 3 : 1, and a total solids content of 40-55 per cent calculated as alkali metal oxide and silicon dioxide, and thereafter cooling to 65 DEG to 90 DEG C. and allowing the mass to set and crystallize. The preferred M2O : SiO2 ratio in the mixture is from 3 : 1 to 6 : 1 and the mixture may be effected at temperatures of 90 DEG to 135 DEG C. According to an example water glass solution is mixed with 70 per cent sodium hydroxide to produce a Na2O : SiO2 ratio of 3.94 : 1, the mixing being effected at 95 DEG C. The mixture is then cooled to 86 DEG C. and held at this temperature until crystallization is complete the mass is then stirred to form a slurry and the crystals centrifuged and dried to produce a product having a Na2O : SiO2 ratio of 2 : 1; further examples relate to a product having Na2O : SiO2 ratios of 2.02 : 1, 1.85 : 1, 2.23 : 1, 1.87 : 1 and 1.93 : 1, the differing ratios resulting from the temperature to which the mixture is heated and the rate and degree of the cooling. The products are stated to be combinations of sesquisilicate and associated caustic. The invention is applicable to silicates of Li, Na, K, Cs and Rb. Specification 790,285 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US790286XA | 1954-01-04 | 1954-01-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB790286A true GB790286A (en) | 1958-02-05 |
Family
ID=22147957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37682/54A Expired GB790286A (en) | 1954-01-04 | 1954-12-30 | Improvements in or relating to the production of alkali metal silicates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB790286A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1134060B (en) * | 1959-06-13 | 1962-08-02 | Henkel & Cie Gmbh | Process for the production of high-alkali, storable sodium silicates |
| GB2333519A (en) * | 1998-01-21 | 1999-07-28 | Alliant Defense Electronic Sys | Moisture degradable alkali metal silicate for chaff substrate |
| WO2010102803A1 (en) | 2009-03-12 | 2010-09-16 | Hwt-Wassertechnische Anlage Gmbh | Method for providing water glass for an industrial application |
| CN114062529A (en) * | 2020-08-07 | 2022-02-18 | 舒泰神（北京）生物制药股份有限公司 | Method for detecting content of silicon dioxide |
-
1954
- 1954-12-30 GB GB37682/54A patent/GB790286A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1134060B (en) * | 1959-06-13 | 1962-08-02 | Henkel & Cie Gmbh | Process for the production of high-alkali, storable sodium silicates |
| GB2333519A (en) * | 1998-01-21 | 1999-07-28 | Alliant Defense Electronic Sys | Moisture degradable alkali metal silicate for chaff substrate |
| GB2333519B (en) * | 1998-01-21 | 2001-11-28 | Alliant Defense Electronic Sys | Metal-coated alkali metal silicate article |
| WO2010102803A1 (en) | 2009-03-12 | 2010-09-16 | Hwt-Wassertechnische Anlage Gmbh | Method for providing water glass for an industrial application |
| CN114062529A (en) * | 2020-08-07 | 2022-02-18 | 舒泰神（北京）生物制药股份有限公司 | Method for detecting content of silicon dioxide |
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