The ore separating method for raising the recovering rate of low-grade oxide gold and with high mud content and containnig coarse gold grain has the three kinds of technological process of heap leaching, gravitational separation and charcoal leaching combined. After crushing, washing ore, sieving, secondary crushing and twice grading, the coarse one grains enter heap leaching system directly white the fine ore grains enter the charcoal leaching system; preliminary vibration chute is set before the grading machine to retain coarse gold grains via gravitational separation. The said method has gold core recovering rate obviously higher than that of single heap leaching method and can utilize the precious resource fully. |