WO2009015967A3 - Method for compacting pyrogenically prepared oxides - Google Patents

Method for compacting pyrogenically prepared oxides Download PDF

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Publication number
WO2009015967A3
WO2009015967A3 PCT/EP2008/058409 EP2008058409W WO2009015967A3 WO 2009015967 A3 WO2009015967 A3 WO 2009015967A3 EP 2008058409 W EP2008058409 W EP 2008058409W WO 2009015967 A3 WO2009015967 A3 WO 2009015967A3
Authority
WO
WIPO (PCT)
Prior art keywords
compacting
oxides
pyrogenically prepared
prepared oxides
pyrogenically
Prior art date
Application number
PCT/EP2008/058409
Other languages
French (fr)
Other versions
WO2009015967A2 (en
Inventor
Ralph Hofmann
Kai Schumacher
Original Assignee
Evonik 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
Application filed by Evonik Degussa Gmbh filed Critical Evonik Degussa Gmbh
Publication of WO2009015967A2 publication Critical patent/WO2009015967A2/en
Publication of WO2009015967A3 publication Critical patent/WO2009015967A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/10—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in stationary drums or troughs, provided with kneading or mixing appliances
    • 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
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • 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
    • C01P2006/10—Solid density

Abstract

Pyrogenically prepared oxides are compacted by mechanically moving the oxides in a stirred container by means of a stirring member and discharging said oxides from the stirred container.
PCT/EP2008/058409 2007-07-31 2008-06-30 Method for compacting pyrogenically prepared oxides WO2009015967A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036388A DE102007036388A1 (en) 2007-07-31 2007-07-31 Process for compacting pyrogenically prepared oxides
DE102007036388.7 2007-07-31

Publications (2)

Publication Number Publication Date
WO2009015967A2 WO2009015967A2 (en) 2009-02-05
WO2009015967A3 true WO2009015967A3 (en) 2010-01-07

Family

ID=39832340

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/058409 WO2009015967A2 (en) 2007-07-31 2008-06-30 Method for compacting pyrogenically prepared oxides

Country Status (2)

Country Link
DE (1) DE102007036388A1 (en)
WO (1) WO2009015967A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017122049A1 (en) 2016-01-15 2017-07-20 Iį "Macrosorb.Lt" Method of the compaction of nano-silica
CN111847464B (en) * 2020-07-27 2023-07-21 湖北科技学院 Radiation preparation method of nano silicon dioxide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6572262B1 (en) * 1998-06-26 2003-06-03 Elkem Asa Densifying of a bulk particulate material
WO2003103824A1 (en) * 2002-06-10 2003-12-18 Kevan Vaughan Russel-Smith Densifying of a bulk particulate material
US20040112456A1 (en) * 2002-12-16 2004-06-17 Bates James William Densification of aerated powders using positive pressure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL269702A (en) 1960-10-01
DE1807714C2 (en) 1968-11-08 1971-01-04 Degussa Process and device for continuous pre-compression and simultaneous shaping of finely divided materials
DE3741846A1 (en) 1987-02-26 1989-01-26 Degussa METHOD FOR COMPRESSING PYROGEN PRODUCED SILICA
EP1661612A1 (en) 2001-07-11 2006-05-31 Degussa AG Apparatus and Process for Filling Large Containers of Different Sizes and Shapes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6572262B1 (en) * 1998-06-26 2003-06-03 Elkem Asa Densifying of a bulk particulate material
WO2003103824A1 (en) * 2002-06-10 2003-12-18 Kevan Vaughan Russel-Smith Densifying of a bulk particulate material
US20040112456A1 (en) * 2002-12-16 2004-06-17 Bates James William Densification of aerated powders using positive pressure

Also Published As

Publication number Publication date
WO2009015967A2 (en) 2009-02-05
DE102007036388A1 (en) 2009-02-05

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