Title:
PREPARATION OF SELENIUM
Document Type and Number:
Japanese Patent JPS5284122
Kind Code:
A
Abstract:
PURPOSE: Selenium containing extremely low sulfer is reduced, precipitated by the pass of sulfur dioxide through selenious acid solution acidified with sulfuric acid.
Inventors:
NARITA KATSUTOSHI
Application Number:
JP15780675A
Publication Date:
July 13, 1977
Filing Date:
December 30, 1975
Export Citation:
Assignee:
NIPPON MINING CO
International Classes:
C22B3/00; C01B19/02; C22B3/44; (IPC1-7): C01B19/00