Kennecott's million-ton test heap - The active leach program

From: Minerals & Metallurgical Processing | Date: February 1, 2006| Author: Schlitt, W Joseph | Copyright information

Abstract

The history and results of Kennecott's large-scale chalcopyrite leach program are presented. The program has now been underway for more than ten years. This paper describes the construction and active operation of the two-lift heap and the ancillary solvent extraction-electrowinning (SX-EW) pilot plant. The latter was used to recover the copper and provide a typical industrial raffinate for recycling to the heap. The first ore lift contained 960 kt (~1.0 million st) of selecte...

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