Abstract:

According to the disadvantages of conventional cyanide leaching method extracting gold and silver, such as long-time leaching and large consumption of reagent, we adopted a high pressure leaching instrument in leaching process, then take the pressure leaching experimental of extracting gold and silver for the concentrate ore after flotation, and make condition optimization research for pressure leaching using parts of orthogonal factorial method. In the end, combined with production practice,we comparatively analysis the conventional and pressure cyanidation.

Key words: Gold and silver, Pressure cyanide, Conventional cyanide, Positive-cross analysis, Optimized experiment