【作者】 张桂芳； 张宗华； 陈晓鸣；

【Author】 Zhang Guifang*,Zhang Zonghua ,Chen Xiaoming( Kunming University of Science and Technology, Kunming 650093 , China)

【机构】 昆明理工大学；

【摘要】 对长江三峡库尾(重庆段)淤砂进行了详细的工艺矿物学研究表明:长江三峡库尾重庆段淤砂是一个高硅、高钙镁、高铝型脉矿石为主的、含有少量铁和钛成分复杂的矿物群体。原矿含钪6.6g·t-1,其中钛铁矿含钪101g·t-1,钛辉石含钪最高121g·t-1,是淤砂含钪的主要矿物,同时也是淤砂中最有回收价值的对象。在此基础上,拟定了不同的工艺方案进行试验研究,进行了钪的半工业型试验,找到了工艺流程的最佳条件。选矿半工业试验中,采用螺旋抛尾,粗精矿磨矿精选的重选-磁选-电选流程,可以得到品位为96.23g·t-1,回收率为62.11%钪精矿。钪的萃取半工业试验中,将料液采取草酸+氢氧化钠转相,在得到钪的粗产品后,又采用盐酸溶解,TBP萃取,草酸沉淀过滤,高温灰化,最终得到Sc2O3品位99.85%的最终钪产品。采用真空冶金还原生产金属钪,纯度达4N。更多还原

【Abstract】 The detail process mineralogy of the silt is been studiedinthe bottomof the reservoir of Chongqin segment of Yangtze basin ,whichis a complex mineral colony with high Si ,high Ca-Mg,high Al type gangue andlittle Fe and Ti .Rue-of-mine ore contains Sc 6 .6 g·t-1,ilmenite among the mcontains Sc 101 g·t-1,Ti picrite whichis a main mineral with Sc inthe silt contains the highest Sc content of 121 g·t-1,and meantime it is the most valuable object to recover .The experiment research have been made by different technology schemes ,the semi-industrial experiment on Sc have been made , the best experiment condition of technology flow sheet have been found and a index have been obtained .Inthe semi-industrial experiment of the separation , Sc concentrate with the grade of 96·23 g·t-1 and the recovery of 62 .11 % may be ob tained by throwing tailings of the spire and adopting the flowsheet of gravity concentration-magnetic separation-electrostatic separation .In the half industry of leaching Sc ,the feed phase is been turned by oxalic and sodiumhydroxide . After obtaining crude produce of Sc ,in order to purify ,adoping muriatic acid dissolve ,leaching TBP,deposing and filtrating by oxalic ,incinerating by hightemperatures ,the end produce of Scare been obtained with the grade of 99 .85 %. Whenthe way of vacuum metallurgy deoxidize obtains Sc ,its degree of pure of Sc is 4N.更多还原