Title:
METAL, PROCESS FOR PRODUCING METAL, METAL PRODUCING APPARATUS AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/061012
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a highly purified metal obtained by direct reduction of a metal oxide, or a metal with peculiar properties; a process for producing the same; and a relevant production apparatus. [MEANS FOR SOLVING PROBLEMS] There is provided a metal material obtained by fixing sintered metal oxide (39) with rotatable fixing means (38), disposing infrared heating lamp (33,34) equipped on its backside with an elliptical mirror for light focusing at one focal point of the elliptical mirror, disposing a region to be heated of metal oxide at the other focal point, and treating the sintered metal oxide in an atmosphere of 10-30 to 10-20 atm oxygen partial pressure at a temperature not lower than the temperature obtained from the intersection of, on the Ellingham diagram, straight line linking the position of oxygen on vertical line (indicating standard free energies of formation represented by C, H and O) with presumed oxygen partial pressure with straight line indicating a change of standard free energy of formation (ΔG°) at production of a metal from a metal oxide. Further, there are provided a process for producing the same and a relevant apparatus.
Inventors:
YOSHIDA YOSHIYUKI (JP)
SHIRAKAWA NAOKI (JP)
IKEDA SHINICHI (JP)
IWASAKI RYUSUKE (JP)
NISHIMURA HIROSHI (JP)
SHIRAKAWA NAOKI (JP)
IKEDA SHINICHI (JP)
IWASAKI RYUSUKE (JP)
NISHIMURA HIROSHI (JP)
Application Number:
PCT/JP2006/323359
Publication Date:
May 31, 2007
Filing Date:
November 22, 2006
Export Citation:
Assignee:
NAT INST OF ADVANCED IND SCIEN (JP)
CANONMACHINARY INC (JP)
YOSHIDA YOSHIYUKI (JP)
SHIRAKAWA NAOKI (JP)
IKEDA SHINICHI (JP)
IWASAKI RYUSUKE (JP)
NISHIMURA HIROSHI (JP)
CANONMACHINARY INC (JP)
YOSHIDA YOSHIYUKI (JP)
SHIRAKAWA NAOKI (JP)
IKEDA SHINICHI (JP)
IWASAKI RYUSUKE (JP)
NISHIMURA HIROSHI (JP)
International Classes:
C22B21/00; C22B5/16; C23C14/14; C23C14/24; C22B1/16
Foreign References:
| JP2000192113A | 2000-07-11 | |||
| JPH0812499A | 1996-01-16 | |||
| JPS5215409A | 1977-02-05 | |||
| JPS59126730A | 1984-07-21 | |||
| JPS5825440A | 1983-02-15 | |||
| JPS5247502A | 1977-04-15 |
Attorney, Agent or Firm:
FURUMIYA, Isseki (NP Building 5-9, Toranomon 1-Chom, Minato-ku Tokyo 01, JP)
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