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. 12, 1981
Filed:
Feb. 23, 1979
Werner Schwartz, Frankfurt am Main, DE;
Peter Fischer, Bad Vilbel, DE;
Heinrich Traulsen, Schwalbach, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
An improved continuous process for the conversion of a non-ferrous metal sulfide to form (A) a slag phase and (B) a non-ferrous metal phase of greater non-ferrous metal than the unconverted non-ferrous metal sulfide, by heating the non-ferrous metal sulfide in the form of a molten bath in a horizontal reactor provided with an oxidizing zone to which an oxidizing gas is added wherein in the oxidizing zone oxidation conditions predominate and a reducing zone to which a reducing gas is added and wherein in said reducing zone reducing conditions predominate is described. In the process, the slag is withdrawn from one end of the horizontal reactor while the non-ferrous metal phase is withdrawn from the other. In accordance with the invention, the gas atmosphere which develops in the horizontal reactor passes in counter-current flow to the flow of the slag phase and exhaust gas is withdrawn from the reactor at the same end of the reactor as is withdrawn the non-ferrous metal phase.