摘要
在扎鲁特旗大型超低品位钇族稀土矿床矿物学特性研究的基础上,以散射线本底标准法为理论依据,推导出了低品位钇族稀土矿X-荧光预选中矿石品位的最佳表征方式—"峰背比法"。研究表明,矿块的峰背比值与其中Y_2O_3的含量有良好的一元线性关系。在采用峰背比值作为矿块中稀土含量高低的表征方式的前提下,原矿经荧光预选后可获得Y_2O_3品位为1.52%,回收率为80.52%,Ce_2O_3品位为1.17%,回收率为82.23%的精矿,预选精矿中Y_2O_3含量完全达到原生稀土矿最低工业入选品位要求。
Qn the basis of the mineralogy characteristics of the family of yttrium rare earths in Jarud Banner, the ＂peak - back ratio＂ as the optimal grade representation way was deduced based on the method of scattering line background standards. The study indicated that the ＂peak - back ratio＂ has a good monadic linear correlation with the Y2 O3 content of the ore. A concentrate with a Y2O3 grade of 1.52%, recovery of 80.52% , a Ce2O3 grade of 1.17%, recovery of 82.23% was obtained in the X - fluorescent pre - separation test by using the ＂peak - back ratio＂ as the grade representation way and the indexes of content can fully meet the requirements of the milling grade of rare earth ore.
出处
《稀土》
EI
CAS
CSCD
北大核心
2016年第4期10-15,共6页
Chinese Rare Earths
基金
国家自然科学基金项目(21273171)
关键词
稀土选矿
X荧光预选
光电选矿
峰背比
rare earth beneficiation
X - ray pre - separation
photoelectric separation
peak - background ratio
