It was proved from investigation and prodution data that the velocity of gold dissolution was increased by applying oxygen-rich leaching in Dong-Ping Gold Mine. This enable the treatment capacity of leaching installation to raise from 300t/d to 643t/d.
Due to the grain size of the gold ore of Long Tou Shan Gold Mine was relatively greater,the existing leaching equipment was unable to meet the leaching time needed,thus resulting in poor gold leaching rate.
Uptodate evolvement of cyanide gold leaching process is summarized Present development of theory, technics and practice in cyanide assistant leaching, leaching equipment and heap leaching are reviewed emphatically
The development suggestions on of domestic oils extraction equipment was also put forward, such as applying computer technology to realize the intelligentized production of oils, strengthening research to consummationg oils extraction equipment to lower production cost, developing new equipment to adapt the new production process of oil.
Through employment of oxygen rich leaching technology,the specific value of CN -/O 2 reduced to 10～8 in Dong Ping Gold Mine and the ore treatment capacity by its equipment inereased from 350 ton to 640ton while increasing gold recovery rate and decreasing unit consumption of sodium cyanide.