heap leaching leached

  • Heap leaching - Wikipedia

    Both oxide and sulfide ores can be leached, though the leach cycles are much different and sulfide leaching requires a bacterial or "bio-leach" component. In 2011 leaching (both heap leaching and in-situ leaching) produced 3.4 million metric tons of copper, 22 percent of world production.

  • Heap leaching – Casey Research

    A process whereby valuable metals, usually gold and silver, are leached from a heap, or pad, of crushed ore by leaching solutions percolating down through the heap and collected from a sloping, impermeable liner below the pad.

  • In situ leach - Wikipedia

    In-situ leach mining involves pumping of a lixiviant into the ore body via a borehole, ... Copper is usually leached using acid (sulfuric acid or hydrochloric acid), then recovered from solution by solvent extraction electrowinning (SX-EW) or by chemical precipitation. Ores most amenable to leaching include the copper carbonates malachite and …