Title:
金属超微粉の製造方法及びバーナ、並びに金属超微粉製造装置
Document Type and Number:
Japanese Patent JP4966288
Kind Code:
B2
Abstract:
A process for producing metallic ultra-fine powder, which can use a raw material which is spread over a wide range, and control freely the grain size of the metallic powder to be produced, at low cost and high safety. The process for producing the metallic ultra fine powder consists of using a burner and a furnace which can generate a high temperature reductive atmosphere, and an apparatus for separating gas which is generated in the furnace from powder to recover the powder. The burner has a function of blowing a powdery metallic compound as a raw material into a high temperature reductive flame. The raw material powder is efficiently heated in airflow of a high temperature reductive flame, thereby being reduced rapidly into metallic ultra-fine powder. At this time, the grain size of the metallic ultra-fine powder is controlled by adjusting the oxygen ratio (i.e. the ratio of amount of the burning-assist gas supplied to the burner to the amount of the burning-assist gas required for completely burning the fuel).
Inventors:
Hiroshi Igarashi
Takayuki Matsumura
Shinichi Miyake
Takayuki Matsumura
Shinichi Miyake
Application Number:
JP2008299644A
Publication Date:
July 04, 2012
Filing Date:
November 25, 2008
Export Citation:
Assignee:
Taiyo Nippon Sanso Co., Ltd.
International Classes:
B22F9/26; B22F9/22; F23D17/00; F23D99/00
Domestic Patent References:
| JP2002356708A | ||||
| JP2054705A | ||||
| JP2004044907A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama