GB790286A - Improvements in or relating to the production of alkali metal silicates - Google Patents

Improvements in or relating to the production of alkali metal silicates

Info

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
Application number
GB37682/54A
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.)
Diamond Shamrock Corp
Original Assignee
Diamond Alkali Co
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 Diamond Alkali Co filed Critical Diamond Alkali Co
Publication of GB790286A publication Critical patent/GB790286A/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
    • C01B33/20—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.
GB37682/54A 1954-01-04 1954-12-30 Improvements in or relating to the production of alkali metal silicates Expired GB790286A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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