JP2875925B

PURPOSE:To obtain a metal carbide by mixing a decomposable carbon compd. with a dispersion liquid of a metal oxide and introducing the mixture into a hat gas to obtain a carbon-contg. composition which is heated in an inert gas or in a gaseous nitrogen. CONSTITUTION:Air is continuously introduced in...

Full description

Saved in:
Bibliographic Details
Main Authors MYASHITA HIDEAKI, NAKAMURA FUMIO, YASUTAKE TSUYOSHI, SUDO NOBUYUKI, YOSHINO TADASHI, KOHARA SADAICHI, MASUDA HIROSHI
Format Patent
LanguageEnglish
Published 31.03.1999
Edition6
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To obtain a metal carbide by mixing a decomposable carbon compd. with a dispersion liquid of a metal oxide and introducing the mixture into a hat gas to obtain a carbon-contg. composition which is heated in an inert gas or in a gaseous nitrogen. CONSTITUTION:Air is continuously introduced into a reaction furnace shown in the figure from a duct 2 at 100Nm /h, and a decomposable carbon compd. (e.g. gaseous propane) is supplied from a burner 3 in >=3 molar ratio of the compd. to a metal oxide to generate a hot gas current at 800-2000 deg.C in a spatial region 6 in the furnace. A dispersion liquid obtained by mixing and dispersing a metal oxide (e.g. silica powder of 99.5% purity) into A heavy oil by an agitator in 1:3 weight ratio of SiO2 to A heavy, oil is supplied into the furnace from a nozzle 4. The dispersion liquid is thermally decomposed to obtain a dispersoid, which is passed through a duct 5 and collected by a bag filter, etc., to obtain a carbon-contg. composition. The composition is heated to 1200-2000 deg.C in an inert gas atmosphere or in a nitrogen-contg. atmosphere, and the powder of the metal carbide or nitride is obtained.
Bibliography:Application Number: JP19920085463