CAJ | 학술논문

新疆某氧硫混合铜矿，铜金属储量达20多万t。由于矿石品位低、氧化率高、钙镁碱性脉石含量高，且-20μm原生矿泥高达60％，采用传统酸浸工艺和生物浸出工艺均无法获得较好的技术指标。而采用硫酸铵-氨水-过硫酸铵浸出体系，在常温常压、液固比2∶1、磨矿细度-0．074 mm占86％、搅拌转速200 r/min情况下，三段分批加药浸出，获得了渣计铜浸出率大于86．50％的优良指标，为工业应用打下了良好基础。
신강모양류혼합동광，동금속저량체20다만t。유우광석품위저、양화솔고、개미감성맥석함량고，차-20μm원생광니고체60％，채용전통산침공예화생물침출공예균무법획득교호적기술지표。이채용류산안-안수-과류산안침출체계，재상온상압、액고비2∶1、마광세도-0．074 mm점86％、교반전속200 r/min정황하，삼단분비가약침출，획득료사계동침출솔대우86．50％적우량지표，위공업응용타하료량호기출。
This paper focuses on an oxygen-sulfur mixed copper mine in Xinjiang with copper reserves of more than 200 thousand tons .While the run-dof-mine is charactered with low grade , high oxidation rate , high alkaline gangue content of calcium and magnesium and high native slime which is 60 %, conventional acid leaching direct leaching process and bio-leaching processes are helpless in obtaining better product indexes .In this study ,ammonium sulfate-ammonia-ammonium persulfate leaching system is explored .The optimal conditions are as follows: a liquid to solid ratio of 2∶1,a grinding fineness of -0.074 mm content accounting for 86 %,a stirring speed of 200 r/min and leaching drugs addition in three times at room temperature and atmospheric pressure .Total copper in leaching residue is more than 86.50 %,which lays a good foundation for the industrialization .