Title:
METHOD FOR REFINING METAL BISMUTH
Document Type and Number:
Japanese Patent JPH0711355
Kind Code:
A
Abstract:
PURPOSE: To effectively prevent the corrosion of devices, jigs, etc., by gaseous chlorine and the leakage of the gaseous chlorine and to improve productivity by way of higher stability of operation and higher reaction efficiency.
CONSTITUTION: The temp. of the molten metal bismuth in a melting furnace is measured by immersing a thermocouple thermometer with a protective tube made of borosilicate glass. Chlorine is blown at 25 to 25 liter/min through a blowing pipe made of borosilicate glass immersed into the bath when the measured temp. is 530 to 560°C.
Inventors:
ISHII MASAMI
HIMENO TAKASHI
SHIMAZAKI TATSUO
HIMENO TAKASHI
SHIMAZAKI TATSUO
Application Number:
JP15189893A
Publication Date:
January 13, 1995
Filing Date:
June 23, 1993
Export Citation:
Assignee:
NIKKO KINZOKU KK
International Classes:
C22B30/06; (IPC1-7): C22B30/06
Attorney, Agent or Firm:
Junzo Ogawa (1 person outside)
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