Title:
METHOD AND APPARATUS FOR HEAT TREATMENT OF POWDER OF FINE CARBON FIBER
Document Type and Number:
WIPO Patent Application WO/2004/038074
Kind Code:
A1
Abstract:
A method of heat treatment of a powder, wherein a fine carbon fiber powder being taken out from a reaction furnace for the formation thereof and being not placed in a specific container nor press-molded, or an amorphous and powdery fine carbon fiber prepared by pressing fine carbon fibers followed by pulverizing is, as it is, heated in a furnace at a temperature of 800°C or higher in an atmosphere of an inert gas or a hydrogen gas, to thereby vaporize a volatile component attached thereto and carbonize at a higher temperature; and an apparatus for heat treatment of a powder, wherein a heating furnace section is partitioned by a plate for forcing a fine carbon fiber powder therein or an agitation device, a tube for withdrawing a gas inside the furnace is provided in one of the compartments formed in the furnace by the plate or the device positioned near to the opening for feeding the fiber and an opening for feeding a fresh gas is provided in a compartment near to the opening for discharging said fiber.
More Like This:
Inventors:
NISHIMURA KUNIO (JP)
Application Number:
PCT/JP2003/013795
Publication Date:
May 06, 2004
Filing Date:
October 28, 2003
Export Citation:
Assignee:
CARBON NANOTECH RES INST INC (JP)
NISHIMURA KUNIO (JP)
NISHIMURA KUNIO (JP)
International Classes:
D01F9/127; D01F9/133; (IPC1-7): D01F9/127; D01F9/133; C01B31/02
Foreign References:
| JP2003201630A | 2003-07-18 | |||
| JPH02259120A | 1990-10-19 | |||
| JP2002194625A | 2002-07-10 | |||
| JPH0860444A | 1996-03-05 | |||
| JPH0860446A | 1996-03-05 | |||
| JPS4992326A | 1974-09-03 | |||
| JPH04139013A | 1992-05-13 |
Attorney, Agent or Firm:
Fujimoto, Eisuke c/o Fujimoto Patent & Law Office (Room 317 Sanno Grand Building 3F., 14-2,
Nagata-cho 2-chom, Chiyoda-ku Tokyo, JP)
Download PDF: