摘要
青藏高原某特大斑岩型铜钼矿资源储量丰富,铜钼分离困难导致其中钼资源未得到有效利用。为综合回收矿石中铜、钼等有价金属元素,确定该矿石最佳的选矿工艺流程及药剂制度,在工艺矿物学研究的基础上进行了选矿试验研究。结果表明,矿石中铜品位为1.21%,钼品位为0.040%;矿石中主要铜矿物为辉铜矿和黄铜矿,辉铜矿中铜占总铜的82.80%;辉钼矿是矿石中钼的主要赋存矿物,以单体形式存在;矿石中的脉石矿物主要为长石和石英;试样在最佳的药剂制度下,采用"铜钼混合浮选-混合精矿再磨-铜钼分离"的工艺流程,经1次混合粗选、1次混合精选和2次混合扫选得到铜钼混合精矿,混合精矿再磨进行铜钼分离粗选,分离粗选精矿经6次精选得到钼精矿,1次分离扫选得到铜精矿,最终获得含铜26.46%、含钼0.071%,铜回收率92.06%的铜精矿,含钼46.400%、含铜1.28%,钼回收率75.40%的钼精矿。试验指标良好,实现了铜钼的有效分离。
A large porphyry type copper-molybdenum ore deposit in the Tibetan Plateau is abundant,and the difficulty in separating copper and molybdenum results in the inefficient use of molybdenum resources. In order to recover valuable metal elements such as copper and molybdenum comprehensively,and determine the best ore dressing process and reagents system for the ore,dressing tests were carried out based on process mineralogy research. The results showed that the copper grade in the ore is 1.21% and the molybdenum grade is 0.040%. The main copper minerals in the ore are chalcocite and chalcopyrite. The copper in the chalcocite accounts for 82.80% of the total copper. The main molybdenum mineral in the ore is molybdenite in the form of monomers. The gangue minerals in the ore are mainly feldspar and quartz. Under the best reagents system,the sample is subjected to "copper-molybdenum mixed flotation-regrinding of mixed concentrate-copper-molybdenum separation" process. The copper-molybdenum mixed concentrate was obtained after one mixed roughing,one mixed cleaning and two mixed scavengings,and then the mixed concentrate was reground for copper-molybdenum separation roughing. The concentrate was selected for six times to obtain molybdenum concentrate,and the copper concentrate was obtained for one scavenging. Finally,the copper concentrate containing copper of 26.46%,molybdenum of 0.071% and copper recovery rate of 92.06% was obtained,and the molybdenum concentrate with molybdenum of 46.400%,copper of 1.28% and molybdenum recovery rate of 75.40% was obtained. The test indexes are fine,which means the effective separation of copper and molybdenum.
作者
朱贤文
李世纯
王阳
许永伟
翁存建
罗仙平
Zhu Xianwen;Li Shichun;Wang Yang;Xu Yongwei;Weng Cunjian;Luo Xianping(Technology Development of Western Mining Group Co.,Ltd.,Xining 810006,China;Research Center of Nonferrous Mineral Resources of Engineering and Technology in Qinghai Province,Xining 810006,China;Qinghai Province Key Laboratory of Plateau Mineral Processing Engineering and Comprehensive Utilization,Xining 810006,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《金属矿山》
CAS
北大核心
2020年第2期71-76,共6页
Metal Mine
基金
国家自然科学基金项目(编号:51374116)
青海省重大科技专项(编号:2018-GX-A7)。
关键词
斑岩型铜钼矿
工艺矿物学
混合浮选
精矿再磨
铜钼分离
type copper-molybdenum ore
Process mineralogy
Bulk flotation
Regrinding of concentrate
Separation in copper and molybdenum
