Title:
METAL EVAPORATION BY WELTS PROCESS
Document Type and Number:
Japanese Patent JPS5518591
Kind Code:
A
Abstract:
In a Waelz process of volatilizing zinc and lead from iron-containing and oxide-containing material in an inclined rotary kiln, which is charged at its upper end with the material together with solid carbonaceous reducing agent having a high content of volatile combustible constituents, wherein the reduction and volatilization are effected below the softening point of the charge, metallic iron-containing material is discharged from the lower end of the rotary kiln, combustion air is sucked into the lower end of the rotary kiln, and the exhaust gases are sucked from the upper end, the improvement which comprises blowing oxygen-containing gases through tubular air nozzles into the charge disposed over said tubular air nozzles in that region of the heating-up zone which begins where ignitable particles of the solid reducing agent begin to occur and which terminates at up to 50 percent of the length of the kiln.
Inventors:
HARII ZERUBENTO
GEERUHARUTO ROITERU
HORUFURAMU SHIYUHEEBERU
GIYUNTAA KOSETSUKU
GEERUHARUTO ROITERU
HORUFURAMU SHIYUHEEBERU
GIYUNTAA KOSETSUKU
Application Number:
JP9025079A
Publication Date:
February 08, 1980
Filing Date:
July 16, 1979
Export Citation:
Assignee:
METALLGESELLSCHAFT AG
International Classes:
C22B5/16; C21B13/08; C22B7/02; C22B13/02; C22B19/04; (IPC1-7): C22B5/16; C22B7/00