GB206572A - Improvements in or relating to production of alkali silicate solutions - Google Patents

Improvements in or relating to production of alkali silicate solutions

Info

Publication number
GB206572A
GB206572A GB2143622A GB2143622A GB206572A GB 206572 A GB206572 A GB 206572A GB 2143622 A GB2143622 A GB 2143622A GB 2143622 A GB2143622 A GB 2143622A GB 206572 A GB206572 A GB 206572A
Authority
GB
United Kingdom
Prior art keywords
silica
ratio
soda
solution
sio2
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
GB2143622A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2143622A priority Critical patent/GB206572A/en
Publication of GB206572A publication Critical patent/GB206572A/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

Abstract

206,572. Codd, L. W. Aug. 5, 1922. Water-glass and caustic soda, preparing.-The ratio of silica to soda in water-glass solutions is increased by limited electrolytic removal of soda, the conditions being chosen so that substantial separation of gelatinous or precipitated silica is avoided. The process is not carried so far that the solution sets to a jelly on standing. In an example a solution of sodium silicate containing 7 per cent SiO2 and having a ratio SiO2 to Na2O of 3.3 is electrolysed in a two-compartment cell between a rotating platinum anode and a mercury cathode, the anode current density being 4.0 amps. per sq. dem. The anode or the liquid surrounding it should be rotated. The silica ratio of the solution may be increased to 4.2 in this way; the product may be concentrated to a specific gravity of 1.225 beyond which the viscosity increases rapidly with further concentration. A silica ratio as high as 6 may be obtained. A higher initial concentration than 7 per cent SiO2 conduces to separation of silica. Caustic soda is formed in the catholyte and may be withdrawn for use. The sodium silicate used may be made by fusion of sodium carbonate and sand.
GB2143622A 1922-08-05 1922-08-05 Improvements in or relating to production of alkali silicate solutions Expired GB206572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2143622A GB206572A (en) 1922-08-05 1922-08-05 Improvements in or relating to production of alkali silicate solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2143622A GB206572A (en) 1922-08-05 1922-08-05 Improvements in or relating to production of alkali silicate solutions

Publications (1)

Publication Number Publication Date
GB206572A true GB206572A (en) 1923-11-05

Family

ID=10162914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2143622A Expired GB206572A (en) 1922-08-05 1922-08-05 Improvements in or relating to production of alkali silicate solutions

Country Status (1)

Country Link
GB (1) GB206572A (en)

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