Process and arrangement for extracting a metal from slag a containing said metal
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United States of America Patent
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Aug 15, 2017
Grant Date -
Aug 27, 2009
app pub date -
Jun 8, 2006
filing date -
Jun 8, 2005
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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.
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