DEVICE FOR PRODUCING FINELY-DIVIDED METAL AND CERAMIC POWDER

Japanese Patent JP3274740

B2

PURPOSE: To make it possible to produce finely-divided powder by providing plural separate gas heaters for the gas preheater with respect to a device for producing finely-divided metal and/or ceramic powder.
CONSTITUTION: A metal compound (TiCl4, or the like) is evaporated through an evaporator 1, 1a and introduced from a middle filament 6 of a flow-shaping part 25 into a tube reactor 4 through a gas-preheater 2a and a gas introducing part 24. On the other hand, a reactant (H2, NH4, or the like) is heated at a gas preheater 2 and introduced from the surrounding filament 7 into the tube reactor 4 to produce metal or ceramic powder. At this time, two heating systems 20 are separately arranged from a gas preheater 23, the gas introducing part 24, the flow-shaping part 25 until the terminal of the tube reactor 4 so as to change gas flow rate for controlling the particle size. The reaction product and unreacted substances are sent to a blow-back filter 10. By this process, finely divided metal or ceramic powder is produced.

JPS63242339	PREPARATION OF SEMICONDUCTIVE MATERIAL
JPS5920833	[Title of the device] Gaseous-phase-reaction device

Theo Konig
Kurt Bechle
Fualk Syutine
Horst ebel
Walker Rose
Gerd Twitzpenhuenich
Lorant Krafki

JP12310293A

April 15, 2002

April 28, 1993

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H.C.Starck Gmbh

B01J12/02; B01J19/26; B22F9/12; B22F9/28; C01B21/06; C01B21/076; C01B31/30; C01B33/06; C01B35/04; C01G25/02; C01G33/00; C01G35/00; C04B35/626; C22C1/00; C01B21/068; C01B21/072; (IPC1-7): B22F9/28; C01B21/06; C01B31/30; C01G33/00; C01G35/00; C22C1/00

JP445207A
JP26837A
JP1116013A
JP63258637A
JP6473009A
JP63156532A
JP6316041A
JP6439380A

Heikichi Odashima

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