A process step wherein granular activated carbon particles much larger than the
ground ore particles are introduced into the ore pulp. Cyanide leaching and
precious metals adsorption onto the activated carbon occur simultaneously. The
loaded activated carbon is mechanically screened to separate it from the barren
ore pulp and processed to remove the precious metals and prepare it for reuse.
Source: Dictionary of Mining, Mineral, and Related Terms
Sponsor: Subscribe to New Scientist now