摘要
针对云南普朗斑岩型铜矿难磨难选的特点,在分析矿石性质的基础上进行粗颗粒水力浮选实验。矿石中的铜主要以黄铜矿形式赋存,钼主要以辉钼矿形式赋存,脉石矿物主要为石英及钠/钙长石。采用HydroFloat水力浮选机对粗颗粒铜钼矿进行混合浮选,达到抛尾目的,减少后续磨矿能耗。HydroFloat水力浮选机在传统流化床的基础上引入气泡,通过复合力场使粗颗粒悬浮后随气泡上升达到分选目的。经水力浮选后,可从铜品位0.39%和含钼0.009%的原矿浮选得到铜品位为0.73%、回收率为95.84%,钼品位为0.016%、回收率为92.05%的铜钼混合粗精矿,抛尾率可达48.80%。
Porphyry copper mine from Yunnan is refractory both in grinding and separation.HydroFloat separation method was employed for coarse particle flotation based on the analysis of ore properties.The target minerals are clopyrite and molybdenite,and gangue minerals mainly quartz and sodium/calcium feldspar.After screening,bulk flotation was conducted with HydroFloat to cast away coarse gangue minerals,which subsequently reduce the energy consumption of further grinding.HydroFloat flotation induces air bubbles based on the traditional fluidized beds,where the suspended coarse particles rise along with bubbles under compound force field.With a tailing disposal rate of 48.80%,the grade of copper increased from 0.39%to 0.73%with a recovery of 95.84%,and the grade of molybdenum increased from 0.009%to 0.016%with a recovery of 92.05%.
作者
罗选旭
封东霞
童雄
熊宇农
罗亨通
郭明龙
董梦
LUO Xuanxu;FENG Dongxia;TONG Xiong;XIONG Yunong;LUO Hengtong;GUO Minglong;DONG Meng(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;National&Regional Engineering Research Center for Gang Resources from Metal Mines,Kunming 650093,China)
出处
《矿产保护与利用》
2024年第3期81-88,共8页
Conservation and Utilization of Mineral Resources
基金
国家自科基金地区基金项目(52264025)
云南省“兴滇英才支持计划”青年人才项目(KRD202221056)。
关键词
斑岩型铜矿
粗颗粒
水力浮选
铜钼混合粗精矿
porphyry copper mine
coarse particles
HydroFloat separation
copper-molybdenum bulk rough concentrate
