SE8502243D0 - METHOD FOR PRODUCING SODIUM SILICATE - Google Patents

METHOD FOR PRODUCING SODIUM SILICATE

Info

Publication number
SE8502243D0
SE8502243D0 SE8502243A SE8502243A SE8502243D0 SE 8502243 D0 SE8502243 D0 SE 8502243D0 SE 8502243 A SE8502243 A SE 8502243A SE 8502243 A SE8502243 A SE 8502243A SE 8502243 D0 SE8502243 D0 SE 8502243D0
Authority
SE
Sweden
Prior art keywords
aluminium
slurry
acid
hydroxide
sodium silicate
Prior art date
Application number
SE8502243A
Other languages
Swedish (sv)
Other versions
SE451998B (en
SE8502243L (en
Inventor
H A L Berglund
Original Assignee
Boliden Ab
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 Boliden Ab filed Critical Boliden Ab
Priority to SE8502243A priority Critical patent/SE451998B/en
Publication of SE8502243D0 publication Critical patent/SE8502243D0/en
Publication of SE8502243L publication Critical patent/SE8502243L/en
Publication of SE451998B publication Critical patent/SE451998B/en

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
    • 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
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/50—Fluorides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Silicon Compounds (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

The manufacture of aluminium fluoride from hexafluorosilicon acid and aluminium hydroxide produces waste silicic acid. From this sodium silicate solution can be made. The acid, which is contaminated with aluminium and fluorine is agitated as an aqueous slurry at 50-100 deg.C, with sodium hydroxide, for 5-10h. Calcium hydroxide is added to the slurry in at least stoichiometric quantities. Calcium fluoride is precipitated during 1-3h at a temperature of 50-100 deg.C, whilst stirring. Sodium hydroxide in sufficient quantity to make Na2OnSIO2 (n is at least 2.5) at 90-110 deg.C over a period of 2-4h. Water glass is formed as a slurry which is filtered. (Provisional Basic previously advised in week 8701)
SE8502243A 1985-05-07 1985-05-07 Sodium silicate soln. prodn. SE451998B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8502243A SE451998B (en) 1985-05-07 1985-05-07 Sodium silicate soln. prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8502243A SE451998B (en) 1985-05-07 1985-05-07 Sodium silicate soln. prodn.

Publications (3)

Publication Number Publication Date
SE8502243D0 true SE8502243D0 (en) 1985-05-07
SE8502243L SE8502243L (en) 1986-11-08
SE451998B SE451998B (en) 1987-11-09

Family

ID=20360110

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8502243A SE451998B (en) 1985-05-07 1985-05-07 Sodium silicate soln. prodn.

Country Status (1)

Country Link
SE (1) SE451998B (en)

Also Published As

Publication number Publication date
SE451998B (en) 1987-11-09
SE8502243L (en) 1986-11-08

Similar Documents

Publication Publication Date Title
ES8701188A1 (en) Crystal modification of disodium-3-amino-1-hydroxy-propane-1,1-diphosphonate.
PT79793B (en) PROCESS FOR THE PREPARATION OF CRYSTALLINE ALKALICHICHTSSILIKATEN
EP0204455A3 (en) Method of making seed solution useful in zeolite catalyst manufacture
ATE48278T1 (en) PROCESSES FOR THE PREPARATION OF 2'DESOXYADENOSINE COMPOUNDS.
CS415791A3 (en) Crystallizing acid addition salts of cephem
DE3462027D1 (en) Process for the preparation of formic acid
JPS5370097A (en) Purifying method for crude sodium silicofluoride
JPS57150645A (en) Manufacture of sodium salt aqueous solution of alpha-aminocarboxyic acid
GB2099008B (en) Enzymatic process for the treatment of xanthan gums to improve the filtrability of their aqueous solutions
ES8606197A1 (en) Stoichiometric process for preparing a zeolite of the L type.
PT83134A (en) Process for the preparation of adition salts of sulphuric acid
JPS5542294A (en) Method of producing high purity granular silicic acid
SE8502243D0 (en) METHOD FOR PRODUCING SODIUM SILICATE
ATE49419T1 (en) DETERGENT POWDER AND METHOD OF MANUFACTURE.
ES8506543A1 (en) Production of zeolite A
SE8304704D0 (en) PROCEDURE FOR REPLACING GYPS
SE8205825L (en) PROCEDURE FOR THE PRODUCTION OF SILIC ACID
GB2103214B (en) Process for the purification of nitro-phenoxybenzoic acid derivatives
DE3260633D1 (en) Process for the manufacture of sulfuric acid
HUT47363A (en) Method for purifying water by help of ion exchanging mixture
DE3272068D1 (en) Process for purifying black lye by elimination of silicic acid
JPS56155685A (en) Removal of fluorine ion from waste water
ZA837063B (en) Tenside-charged silicic acid or silicates,and a method of their production and use thereof
ZA8349B (en) Method of reducing the calcium concentration of aqueous solutions
ES8406981A1 (en) Crystalline sodium aluminium phosphate prodn.

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8502243-2

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8502243-2

Format of ref document f/p: F