The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 1986
Filed:
Jan. 02, 1985
Applicant:
Inventors:
Sune Eriksson, Hofors, SE;
Gotthard Bjorling, Djursholm, SE;
Assignee:
SKF Steel Engineering, AB, Hofors, SE;
Primary Examiner:
Int. Cl.
CPC ...
C21B / ; C22B / ;
U.S. Cl.
CPC ...
75 1 / ; 75 11 ; 75 14 ;
Abstract
Recovery of oxide or silicate-bound metals from liquid slag, in metallic or sulphidic form is carried out by reduction with carbonaceous reducing agent, the thermal energy required to maintain the temperature and perform the reduction and sulphidization being provided by blowing gas preheated in a plasma generator below the surface of the slag bath. The vapor of volatile metals is condensed in known manner in a condensor, the non-volatile metals and sulphides formed being collected in the form of molten drops which are allowed to settle out of the slag.