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1. (WO1992009543) METHOD OF PREPARING CERAMIC HOLLOW PARTICLES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009543 International Application No.: PCT/US1991/008979
Publication Date: 11.06.1992 International Filing Date: 02.12.1991
IPC:
C01B 13/34 (2006.01) ,C01B 33/20 (2006.01) ,C01B 33/26 (2006.01) ,C04B 38/00 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
13
Oxygen; Ozone; Oxides or hydroxides in general
14
Methods for preparing oxides or hydroxides in general
34
by oxidation or hydrolysis of sprayed or atomised solutions
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
20
Silicates
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
33
Silicon; Compounds thereof
20
Silicates
26
Aluminium-containing silicates
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
38
Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
Applicants:
MANVILLE CORPORATION [US/US]; Patent and Licensing Department P.O. Box 5108 Denver, CO 80217-5108, US
Inventors:
JADA, Sivananda, S.; US
Agent:
QUINN, Cornelius, P.; Patent and Licensing Department Manville Corporation P.O. Box 5108 Denver, CO 80217-5108, US
Priority Data:
621,31303.12.1990US
Title (EN) METHOD OF PREPARING CERAMIC HOLLOW PARTICLES
(FR) PROCEDE DE PREPARATION DE PARTICULES CREUSES EN CERAMIQUE
Abstract:
(EN) Described is a method of preparing ceramic hollow discrete particles comprising the steps of forming a solution of a silicon containing material at an acidic pH; forming an aqueous ceramic metal oxide precursor solution; forming a homogeneous mixture of the silicon solution and the ceramic metal oxide precursor solution; spray-drying the homogeneous solution by atomizing the solution into a heated chamber having a pressure of at least ambient to form particles; sintering the particles; and recovering silicon metal oxide particles.
(FR) Procédé de préparation de particules discrètes creuses en céramique consistant à procéder aux étapes suivantes: former une solution d'une matière contenant du silicium à un pH acide, former une solution précurseur aqueuse d'oxyde de céramique et de métal, former un mélange homogène de la solution de silicium et de la solution précurseur d'oxyde de céramique et de métal, sécher par pulvérisation la solution homogène par pulvérisation de ladite solution dans une chambre chauffée dans laquelle règne une pression au moins ambiante afin de former des particules, fritter lesdites particules et récupérer des particules d'oxyde de métal au silicium.
Designated States: JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)