柠檬酸对岩石中铜的淋滤作用

Experimental Study on Leaching of Copper from Rocks at Lower Temperture by Using Citric Acid

柠檬酸对岩石中铜的淋滤作用张海祥，王玉荣（中国科学院广州地球化学研究所．广州５１０６４０）张言（冶金部天津地质研究院．天津３０００６１）关键词铜，低温实验，淋滤实验，柠檬酸有关低温条件下有机质和微生物在成岩成矿过程中的作用已日益引起人们的注意。由于表...

According to the fact that the organic substances are present during mineralizatiorss,we bare done the experimental study on the leaching of copper from metamorphic marlite in Ma Songling Copper Deposits in Peng Xian, Sichuan Province. The experiment used citric acid at low temperture. The results indicate that, although at low temperture the leaching rate of Copper from rocks is high after a short reaction time,the leaching rate of copperfrom rocks is enlarging with increase of reaction time and concentration of reaction solution,the value of water/rock ratio and the leaching rate of copper do not enlarge with increase ofreaction temperture. It is thought to be related with the chemical properties of the experimental rocks.