IT1270867B - FINE GRAIN OXIDE POWDER - Google Patents

FINE GRAIN OXIDE POWDER

Info

Publication number
IT1270867B
IT1270867B ITMI930464A ITMI930464A IT1270867B IT 1270867 B IT1270867 B IT 1270867B IT MI930464 A ITMI930464 A IT MI930464A IT MI930464 A ITMI930464 A IT MI930464A IT 1270867 B IT1270867 B IT 1270867B
Authority
IT
Italy
Prior art keywords
oxide powder
fine grain
grain oxide
hydration
magnesium
Prior art date
Application number
ITMI930464A
Other languages
Italian (it)
Inventor
Andreas Meier
Gerhard Graf
Klaus Dosinger
Original Assignee
Veitscher Magnesitwerke 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
Application filed by Veitscher Magnesitwerke Ag filed Critical Veitscher Magnesitwerke Ag
Publication of ITMI930464A0 publication Critical patent/ITMI930464A0/en
Publication of ITMI930464A1 publication Critical patent/ITMI930464A1/en
Application granted granted Critical
Publication of IT1270867B publication Critical patent/IT1270867B/en

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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/145—After-treatment of oxides or hydroxides, e.g. pulverising, drying, decreasing the acidity
    • 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
    • C01F5/00—Compounds of magnesium
    • C01F5/02—Magnesia
    • C—CHEMISTRY; METALLURGY
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/053—Fine ceramics
    • C—CHEMISTRY; METALLURGY
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/628—Coating the powders or the macroscopic reinforcing agents
    • C04B35/62886—Coating the powders or the macroscopic reinforcing agents by wet chemical techniques
    • C—CHEMISTRY; METALLURGY
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • 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
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/028—Compounds containing only magnesium as metal
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C3/043—Drying, calcination
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    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/10—Treatment with macromolecular organic compounds
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    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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    • C01P2006/10—Solid density
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    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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    • C01P2006/14—Pore volume
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
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    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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    • C04B2235/54—Particle size related information
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    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

L'invenzione si riferisce ad una polvere di ossido in parti fini, in particolare nella base di magnesio ed alluminio, con grado di idratazione massimo di 10% in peso, nella quale le singole particelle in ossido sono munite di un rivestimento sottile che impedisce una ulteriore idratazione.The invention relates to an oxide powder in fine parts, in particular in the magnesium and aluminum base, with a maximum hydration degree of 10% by weight, in which the individual oxide particles are provided with a thin coating which prevents a further hydration.

ITMI930464A 1992-03-10 1993-03-10 FINE GRAIN OXIDE POWDER IT1270867B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0045892A AT398967B (en) 1992-03-10 1992-03-10 METHOD FOR PRODUCING A FINE-PART OXIDE POWDER

Publications (3)

Publication Number Publication Date
ITMI930464A0 ITMI930464A0 (en) 1993-03-10
ITMI930464A1 ITMI930464A1 (en) 1994-09-10
IT1270867B true IT1270867B (en) 1997-05-13

Family

ID=3491167

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930464A IT1270867B (en) 1992-03-10 1993-03-10 FINE GRAIN OXIDE POWDER

Country Status (5)

Country Link
AT (1) AT398967B (en)
DE (1) DE4306234C2 (en)
FR (1) FR2688420A1 (en)
GB (1) GB2264939B (en)
IT (1) IT1270867B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9415562D0 (en) * 1994-08-02 1994-09-21 Dytech Corp Ltd Ceramic articles
DE10058077B4 (en) * 2000-11-23 2008-05-08 Schott Ag Use of coated particles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU711023A1 (en) * 1976-12-07 1980-01-25 Украинский научно-исследовательский институт огнеупоров Method of powder granulation
SE7900812L (en) * 1979-01-30 1980-07-31 Magnusson R C G DEVICE ON ELECTROCHEMICAL ACCUMULATOR CELLS
DE3020854A1 (en) * 1980-06-02 1981-12-10 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München FILLER FOR PAPER, CARDBOARD OR CARDBOARD
JPS60200824A (en) * 1984-03-27 1985-10-11 Shin Nippon Kagaku Kogyo Co Ltd Magnesia and its production
DE3719825A1 (en) * 1987-06-13 1988-12-29 Kernforschungsz Karlsruhe METHOD FOR PRODUCING CERAMIC POWDERS AND DEVICE FOR IMPLEMENTING THE SAME
CA1273647A (en) * 1987-08-19 1990-09-04 Jean V. Sang Production of ceramic powders by emulsion precipitation processes and the products thereof
JPS6475030A (en) * 1987-09-14 1989-03-20 Asahi Optical Co Ltd Production of spherical ceramic particles
AT392464B (en) * 1988-08-10 1991-04-10 Veitscher Magnesitwerke Ag MAGNESIUM OXIDE IN THE FORM OF A FINE POWDER AND ITS USE
DE3840316C1 (en) * 1988-11-30 1990-04-19 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe, De
JPH0350120A (en) * 1989-07-18 1991-03-04 Ishihara Sangyo Kaisha Ltd Production of titanium dioxide pigment powder
DE3932166A1 (en) * 1989-09-27 1991-04-04 Bayer Ag IRON OXIDE RED AND IRON OXIDE BROWN MICROGRANULATES, METHOD FOR THE PRODUCTION AND USE THEREOF

Also Published As

Publication number Publication date
GB2264939B (en) 1995-08-09
DE4306234A1 (en) 1993-09-16
ITMI930464A1 (en) 1994-09-10
DE4306234C2 (en) 1995-09-07
AT398967B (en) 1995-02-27
ATA45892A (en) 1994-07-15
GB2264939A (en) 1993-09-15
FR2688420A1 (en) 1993-09-17
GB9304891D0 (en) 1993-04-28
ITMI930464A0 (en) 1993-03-10

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