refractory gold ores treatment

refractory gold ores treatment

  • Treatment of carbonaceous refractory gold ores

    Gold ores are mainly categorized into two types: (a) non-refractory (fine milling) gold ores, in which most of the gold can be recovered by direct cyanidation, and (b) refractory gold ores, which require pretreatment before cyanidation .

  • US4919715A Treating refractory gold ores via oxygen ...

    Gold-containing ores, having refractory sulfidic matter or a combination of refractory sulfidic matter and refractory carbonaceous matter, are processed to recover their gold values. The process uses an ore roasting procedure that

  • Gold extraction Wikipedia

    A "refractory" gold ore is an ore that has ultra fine gold particles disseminated throughout its gold occluded minerals. These ores are naturally resistant to recovery by standard cyanidation and carbon adsorption processes. These refractory ores require pre-treatment in order for cyanidation to be effective in recovery of the gold. A refractory ore