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Class Information
Number: 75/655
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > At 300 degrees c or greater (e.g., pyrometallurgy, etc.) > Nonferrous > Zinc(zn) > Treating slag or dross
Description: Process in which a slag or dross is treated to produce Zinc (Zn).










Patents under this class:

Patent Number Title Of Patent Date Issued
7819941 Method for reducing and/or refining a metal-containing slag Oct. 26, 2010
6293993 Method for recycling brass foundry waste Sep. 25, 2001
5540752 Method for recovery of non-ferrous metals from scrap and dross Jul. 30, 1996
5505762 Lance for immersion in a pyrometallurgical bath and method involving the lance Apr. 9, 1996
5411572 Method for utilizing smelter waste containing zinc and other valuable metals May. 2, 1995
5358544 Method of recovering zinc Oct. 25, 1994
5192487 Apparatus for treating zinc concentrates Mar. 9, 1993
5131944 Method and apparatus for treating zinc concentrates Jul. 21, 1992
5091001 Disposal of spent vanadium pentoxide catalyst by vitrification Feb. 25, 1992
4741770 Zinc smelting process using oxidation zone and reduction zone May. 3, 1988
4519836 Method of processing lead sulphide or lead-zinc sulphide ores, or sulphide concentrates, or mixtures thereof May. 28, 1985
4493732 Method for implementing pyro-metallurgical processes Jan. 15, 1985
4334918 Method of recovering non-ferrous metals from their sulphide ores Jun. 15, 1982
4252563 Process for the fuming treatment of metallurgical slag Feb. 24, 1981
4251271 Submerged injection of gas into liquid-pyrometallurgical bath Feb. 17, 1981
4221591 Method for reclaiming galvanizing quality zinc alloy from continuous galvanizing line top dross Sep. 9, 1980
4210441 Method for the continuous or discontinuous treatment of molten slag, particularly with contents of heavy metal oxides, for the recovery of portions contained therein of valuable metals or thei Jul. 1, 1980
4168156 Method of and electric furnace for processing nonferrous molten slags Sep. 18, 1979
4131451 Method for removing zinc from zinc-containing slags Dec. 26, 1978
4076521 Method for continuously blowing materials into molten slags Feb. 28, 1978
4075008 Method for the reclamation of zinc from galvanizing baths Feb. 21, 1978
4033760 Aluminum dross recovery method Jul. 5, 1977
4003559 Apparatus for recovery of metallic zinc from dross Jan. 18, 1977
3984235 Treatment of converter slag Oct. 5, 1976











 
 
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