GB1511720A - Sprayable precipitated-silica suspension - Google Patents

Sprayable precipitated-silica suspension

Info

Publication number
GB1511720A
GB1511720A GB39504/75A GB3950475A GB1511720A GB 1511720 A GB1511720 A GB 1511720A GB 39504/75 A GB39504/75 A GB 39504/75A GB 3950475 A GB3950475 A GB 3950475A GB 1511720 A GB1511720 A GB 1511720A
Authority
GB
United Kingdom
Prior art keywords
suspension
silica
stirrer
vessel
diameter
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
GB39504/75A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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
Priority claimed from DE19742447613 external-priority patent/DE2447613C3/en
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of GB1511720A publication Critical patent/GB1511720A/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
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
    • C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability

Abstract

1511720 Silica suspensions DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 26 Sept 1975 [5 Oct 1974] 39504/75 Heading C1A A silica suspension of at least 12% solids is prepared by continuously introducing a silica filter cake and a suspending agent (e.g. dilute aqueous acid) into a vessel with a stirrer, the ratio of vessel diameter to diameter of the widest part of the stirrer being at most 3:1, the ratio of vessel diameter to filling level being at least 1:2, and the vessel containing at least 1À5 kg. of silica suspension per kg. of filter cake input; stirring the suspension with the stirrer having a peripheral speed of 20-30 m./sec., the suspension having a pH of at most 4; and removing suspension from the zone of maximum turbulence.
GB39504/75A 1974-10-05 1975-09-26 Sprayable precipitated-silica suspension Expired GB1511720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742447613 DE2447613C3 (en) 1974-10-05 Process for the production of a sprayable precipitated silica suspension

Publications (1)

Publication Number Publication Date
GB1511720A true GB1511720A (en) 1978-05-24

Family

ID=5927651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39504/75A Expired GB1511720A (en) 1974-10-05 1975-09-26 Sprayable precipitated-silica suspension

Country Status (8)

Country Link
JP (1) JPS589765B2 (en)
BE (1) BE834209A (en)
CA (1) CA1061056A (en)
ES (1) ES441516A1 (en)
FR (1) FR2286793A1 (en)
GB (1) GB1511720A (en)
IT (1) IT1047273B (en)
NL (1) NL7511660A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906843A (en) * 1995-04-19 1999-05-25 Ppg Industries, Inc. Amorphous precipitated silica having large liquid carrying capacity
RU2578302C1 (en) * 2012-03-22 2016-03-27 Родиа Операсьон Method of obtaining precipitated silicon dioxide with application of mixer or extruder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2453880A1 (en) * 1979-04-13 1980-11-07 Rhone Poulenc Ind NOVEL SILICA-BASED PIGMENT IN BALL FORM, PROCESS FOR OBTAINING THE SAME AND APPLICATION, IN PARTICULAR AS REINFORCING FILLER IN ELASTOMERS
FR2536380B1 (en) * 1982-11-24 1985-12-13 Rhone Poulenc Chim Base PROCESS FOR IMPROVING THE RHEOLOGICAL PROPERTIES OF A PRECIPITATED SILICA SUSPENSION
DE19807700A1 (en) * 1998-02-24 1999-08-26 Degussa Precipitated silica granules

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5906843A (en) * 1995-04-19 1999-05-25 Ppg Industries, Inc. Amorphous precipitated silica having large liquid carrying capacity
RU2578302C1 (en) * 2012-03-22 2016-03-27 Родиа Операсьон Method of obtaining precipitated silicon dioxide with application of mixer or extruder
US10246338B2 (en) 2012-03-22 2019-04-02 Rhodia Operations Process for preparing precipitated silica using a mixer or extruder

Also Published As

Publication number Publication date
ES441516A1 (en) 1977-04-01
IT1047273B (en) 1980-09-10
FR2286793B1 (en) 1978-04-07
DE2447613B2 (en) 1976-08-26
JPS589765B2 (en) 1983-02-22
FR2286793A1 (en) 1976-04-30
JPS5163396A (en) 1976-06-01
CA1061056A (en) 1979-08-28
BE834209A (en) 1976-04-05
DE2447613A1 (en) 1976-04-08
NL7511660A (en) 1976-04-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19950925