Title:
METHOD FOR REMOVING BORON FROM METAL SILICON
Document Type and Number:
Japanese Patent JP2013028516
Kind Code:
A
Abstract:
To provide a method for removing boron from metal silicon at fast speed.
In this method for removing boron from metal silicon, a jet stream is formed in advance by changing a mixed gas of an inert gas and at least one kind selected from hydrogen, water vapor, carbon dioxide and oxygen, into plasma, and then metal silicon powder containing boron is supplied into the jet stream. It is also preferable that at least one kind selected from water vapor, carbon dioxide and oxygen is supplied into a middle stream of the jet stream formed by changing a mixed gas of hydrogen and an inert gas into plasma.
Inventors:
HAYASHI KAZUSHI
MORIMOTO TSUTOMU
MORIMOTO TSUTOMU
Application Number:
JP2011167242A
Publication Date:
February 07, 2013
Filing Date:
July 29, 2011
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C01B33/037
Attorney, Agent or Firm:
Kyuichi Ueki
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito