Process for removal of harmful impurities from metallurgical sul

Details Process for removal of harmful impurities from metallurgical sul Process for removal of harmful impurities from metallurgical sul

1981-09-25

1983-07-19

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 23, C21B 104, C22B 102

Patent

active

043941648

ABSTRACT:
A process for the removal of harmful impurities, particularly arsenic, antimony, bismuth and lead, from metallurgical sulphide melts, in which the sulphide melt is sulphurated before conversion, during the slag-blowing stage or after it before the blister-blowing stage, and the melt is refined with nitrogen or other inert gas during sulphuration and possibly after it, so that the amount of sulphur supplied to the sulphide melt is at least 10% in excess of the stoichiometric sulphur amount as calculated from the sulphur requirement of the principal components of the melt.

REFERENCES:
patent: 3450523 (1969-06-01), Socolescir

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