CA2024966A1 - Process for producing sodium silicates - Google Patents

Process for producing sodium silicates

Info

Publication number
CA2024966A1
CA2024966A1 CA2024966A CA2024966A CA2024966A1 CA 2024966 A1 CA2024966 A1 CA 2024966A1 CA 2024966 A CA2024966 A CA 2024966A CA 2024966 A CA2024966 A CA 2024966A CA 2024966 A1 CA2024966 A1 CA 2024966A1
Authority
CA
Canada
Prior art keywords
sodium silicate
rotary kiln
weight
glass solution
water
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.)
Granted
Application number
CA2024966A
Other languages
French (fr)
Other versions
CA2024966C (en
Inventor
Gunther Schimmel
Michael Kotzian
Herbert Panter
Alexander Tapper
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.)
Clariant Produkte Deutschland GmbH
Original Assignee
Hoechst AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25886411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2024966(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of CA2024966A1 publication Critical patent/CA2024966A1/en
Application granted granted Critical
Publication of CA2024966C publication Critical patent/CA2024966C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • C01B33/325—After-treatment, e.g. purification or stabilisation of solutions, granulation; Dissolution; Obtaining solid silicate, e.g. from a solution by spray-drying, flashing off water or adding a coagulant
    • 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
    • C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
    • C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Measurement Of Radiation (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

In order to prepare crystalline sodium silicates having a layered structure, a water content of less than 0.3% by weight and an SiO2 to Na2O molar ratio of (1.9 to 2.1):1 from a water glass solution containing at least 20% by weight of solid, the water glass solution is obtained by reaction of silica sand with sodium hydroxide solution in an SiO2 to Na2O molar ratio of (2.0 to 2.3):1 at temperatures of 180 to 240 DEG C and pressures of 10 to 30 bar. This water glass solution is treated in a spray-drying zone with hot air of 200 to 300 DEG C at a residence time of 10 to 25 s and a temperature of the waste gas leaving the spray-drying zone of 90 to 130 DEG C with formation of a pulverulent amorphous sodium silicate having a water content (determined as loss on ignition at 700 DEG C) of 15 to 23% by weight and a bulk density of more than 300 g/l. The pulverulent, amorphous, water-containing sodium silicate is placed in a tilted rotary kiln equipped with means for moving solids and treated therein counter-currently with flue gas at temperatures of more than 500 DEG C to 850 DEG C for 1 to 60 minutes with formation of crystalline sodium silicate. The rotary kiln is insulated here in such a manner that the temperature of its outer wall is less than 60 DEG C. Finally, the crystalline sodium silicate leaving the rotary kiln is comminuted by means of a mechanical crusher to particle sizes of 0.1 to 12 mm.
CA002024966A 1989-10-25 1990-09-10 Process for producing sodium silicates Expired - Fee Related CA2024966C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3935464 1989-10-25
DEP3935464.4 1989-10-25
DE4004624 1990-02-15
DEP4004624.9 1990-02-15

Publications (2)

Publication Number Publication Date
CA2024966A1 true CA2024966A1 (en) 1991-04-26
CA2024966C CA2024966C (en) 1995-07-18

Family

ID=25886411

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002024966A Expired - Fee Related CA2024966C (en) 1989-10-25 1990-09-10 Process for producing sodium silicates

Country Status (18)

Country Link
EP (1) EP0425428B1 (en)
JP (1) JPH0669890B2 (en)
KR (1) KR0143228B1 (en)
AT (2) ATE98609T1 (en)
BR (1) BR9005378A (en)
CA (1) CA2024966C (en)
DE (3) DE59003875D1 (en)
DK (1) DK0425428T3 (en)
ES (1) ES2047898T3 (en)
FI (1) FI905209A0 (en)
HR (1) HRP921197B1 (en)
LT (2) LT3795B (en)
LV (1) LV10763B (en)
NO (1) NO904603L (en)
PT (1) PT95665A (en)
RU (1) RU2032619C1 (en)
SI (1) SI9012001A (en)
TR (1) TR25165A (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8904007D0 (en) * 1989-02-22 1989-04-05 Procter & Gamble Stabilized,bleach containing,liquid detergent compositions
DE4107230C2 (en) * 1991-03-07 1995-04-06 Hoechst Ag Process for the production of sodium silicates
DE4142711A1 (en) * 1991-12-21 1993-06-24 Hoechst Ag METHOD FOR PRODUCING CRYSTALLINE SODIUM DISILICATES
DE4329394B4 (en) * 1993-09-01 2006-11-02 Henkel Kgaa Builder component for detergents or cleaners
DE4330868A1 (en) * 1993-09-11 1995-03-16 Hoechst Ag Process for preparing granular sodium silicate
DE4400024A1 (en) * 1994-01-03 1995-07-06 Henkel Kgaa Silicate builders and their use in detergents and cleaning agents as well as multi-component mixtures for use in this field
DE4406592A1 (en) * 1994-03-01 1995-09-07 Henkel Kgaa Improved multi-substance mixtures based on water-soluble alkali silicate compounds and their use, in particular for use as builders in detergents and cleaners
DE19515072A1 (en) * 1995-04-28 1996-10-31 Cognis Bio Umwelt Detergent containing cellulase
DE19525197A1 (en) * 1995-07-11 1997-01-16 Hoechst Ag Granular detergent builder
DE19537957A1 (en) * 1995-10-12 1997-04-17 Hoechst Ag Process for the production of highly exchangeable sodium disilicate
DE19545729A1 (en) 1995-12-08 1997-06-12 Henkel Kgaa Bleach and detergent with an enzymatic bleaching system
DE19600018A1 (en) 1996-01-03 1997-07-10 Henkel Kgaa Detergent with certain oxidized oligosaccharides
DE19605688A1 (en) * 1996-02-16 1997-08-21 Henkel Kgaa Transition metal complexes as activators for peroxygen compounds
WO1997036986A1 (en) 1996-04-01 1997-10-09 Henkel Kommanditgesellschaft Auf Aktien Cleaning agent with oligoammine activator complexes for peroxide compounds
DE19620411A1 (en) 1996-04-01 1997-10-02 Henkel Kgaa Transition metal amine complexes as activators for peroxygen compounds
DE19616693A1 (en) * 1996-04-26 1997-11-06 Henkel Kgaa Enol esters as bleach activators for detergents and cleaning agents
DE19707448C2 (en) * 1997-02-25 1998-11-26 Clariant Gmbh Process for the production of crystalline sodium silicates
DE19707449C1 (en) * 1997-02-25 1998-04-09 Clariant Gmbh Layered sodium silicate preparation with high delta-phase content
DE19914811A1 (en) 1999-03-31 2000-10-05 Henkel Kgaa Detergent compositions containing a bleaching agent include a combination of a cyanomethyl ammonium salt bleach activator and an enzyme
DE19943551A1 (en) 1999-09-11 2001-03-15 Clariant Gmbh Poorly soluble alkali silicate
DE19943550A1 (en) * 1999-09-11 2001-03-15 Clariant Gmbh Highly alkaline crystalline sodium silicate
DE10058645A1 (en) 2000-11-25 2002-05-29 Clariant Gmbh Use of cyclic sugar ketones as catalysts for peroxygen compounds
DE10102248A1 (en) 2001-01-19 2002-07-25 Clariant Gmbh Use of transition metal complexes with oxime ligands as bleach catalysts
DE102005026544A1 (en) 2005-06-08 2006-12-14 Henkel Kgaa Reinforcement of cleaning performance of detergents by polymer
ES2425017B1 (en) * 2010-10-26 2014-09-30 Antonio Arnau Villanova GRANULATION BY AGLOMERATION OF CERAMIC COMPOSITIONS MOLDED IN DRY PHASE
DE102011080235A1 (en) * 2011-08-01 2013-02-07 Wacker Chemie Ag Process for the preparation of dispersion powders
JP2022035499A (en) * 2020-08-21 2022-03-04 東ソ－・エスジ－エム株式会社 Method for producing kenyaite
CN114073915A (en) * 2020-08-21 2022-02-22 博特化工装置股份公司 Device for producing alkali metal hydroxide particles
CN113753906A (en) * 2021-09-16 2021-12-07 中国建设基础设施有限公司 Wet grinding preparation method of water glass excitant for geopolymer
CN115154053B (en) * 2022-07-08 2023-03-10 福建大山纸业有限公司 Paper diaper buckling device and corresponding cotton core independent forming process thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1517891A (en) * 1922-09-01 1924-12-02 Ind Waste Products Corp Powdered sodium silicate and process of preparing the same
US3471253A (en) 1966-05-24 1969-10-07 Cowles Chem Co Process for producing sodium metasilicate pentahydrate
US3838192A (en) * 1971-10-28 1974-09-24 Huber Corp J M Production of alkali metal polysilicates
DE3423945A1 (en) * 1984-06-29 1986-01-09 Henkel KGaA, 4000 Düsseldorf METHOD AND DEVICE FOR THE CONTINUOUS HYDROTHERMAL PRODUCTION OF SODIUM SILICATE SOLUTIONS
RO95539B1 (en) * 1986-09-04 1988-10-01 Institutul De Cercetari Metalurgice Process for preparing sodium silicate powder
DE3718350A1 (en) 1987-06-01 1988-12-22 Hoechst Ag METHOD FOR PRODUCING CRYSTALLINE SODIUM SILICATES WITH LAYER STRUCTURE

Also Published As

Publication number Publication date
EP0425428A2 (en) 1991-05-02
JPH03164422A (en) 1991-07-16
RU2032619C1 (en) 1995-04-10
KR0143228B1 (en) 1998-07-15
KR910007803A (en) 1991-05-30
SI9012001A (en) 1997-12-31
FI905209A0 (en) 1990-10-23
TR25165A (en) 1992-11-01
CA2024966C (en) 1995-07-18
BR9005378A (en) 1991-09-17
EP0425428B1 (en) 1993-12-15
LTIP1436A (en) 1995-05-25
EP0425428A3 (en) 1992-04-29
ATE98609T1 (en) 1994-01-15
DK0425428T3 (en) 1994-02-21
DE59003874D1 (en) 1994-01-27
JPH0669890B2 (en) 1994-09-07
NO904603L (en) 1991-04-26
ES2047898T3 (en) 1994-03-01
LTIP1445A (en) 1995-05-25
DE59003875D1 (en) 1994-01-27
LT3795B (en) 1996-03-25
DE4031848A1 (en) 1991-05-02
HRP921197A2 (en) 1995-10-31
HRP921197B1 (en) 1998-02-28
LV10763B (en) 1995-12-20
LV10763A (en) 1995-08-20
NO904603D0 (en) 1990-10-24
ATE98608T1 (en) 1994-01-15
PT95665A (en) 1991-09-13

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Legal Events

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EEER Examination request
MKLA Lapsed