Title:
直接製錬方法
Document Type and Number:
Japanese Patent JP2659807
Kind Code:
B2
Abstract:
This invention relates to a process for the direct smelting of ores, metallic compounds and the like with the use of a heat plasma. This process can be readily conducted with a simple installation irrespective of the shape of the object being smelted and without the necessity of using any plasma generating gas. The process of the invention is characterized by applying a multiphase AC voltage to a number of graphite electrodes to thereby cause arc discharge in the air and directly impinging a highly reductive non-transferred plasma arc generated by the oxidative decomposition of the graphite electrodes against the object from the tips of the electrodes.
Inventors:
SATO RYODA
SHOJI KICHINOSUKE
TAKEMURA SUNAO
SHOJI KICHINOSUKE
TAKEMURA SUNAO
Application Number:
JP17937389A
Publication Date:
September 30, 1997
Filing Date:
July 12, 1989
Export Citation:
Assignee:
BANYO KOGYO KK
International Classes:
C22B5/10; C21B11/10; C21B13/12; C21C5/56; C22B4/00; C22B9/22; C22B21/00; C22B34/10; C22B34/32; C22B34/34; (IPC1-7): C22B4/00; C21B11/10; C22B5/10
Attorney, Agent or Firm:
安田 敏雄