Patent · US Active

Process and arrangement for extracting a metal from slag a containing said metal

US9733016B2 · kind B2 · utility

0Cited by

11References

10Claims

0Family size

Assignee

SMS group GmbH · DE

Inventors

Jürgen Kunze · Rutesheim, DE
Rolf Degel · Ratingen, DE
Dieter Borgwardt · Dorsten, DE
Andrzej Warczok · Barrie, CA
Gabriel Angel Riveros Urzua · Santiago, CL

Key dates

Filing date	Jun 8, 2006
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Feb 26, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention is directed to a process for extracting a metal from a slag containing said metal, wherein the liquefied metal-containing slag is heated in at least one electric arc furnace (1, 2). In order provide an improved method for recovering especially copper from slags, the invention provides that the metal-containing slag is heated in a first furnace (1) constructed as an AC electric furnace or a DC electric furnace, and the melt is introduced from the first furnace (1) into a second furnace (2) which is constructed as a DC electric furnace. Further, the invention is directed to an arrangement for extracting a metal from a slag containing said metal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.