川西九龙地区低品位铍矿选矿实验  

Mineral Processing of Low Grade Beryllium Ores in the Jiulong Area of Western Sichuan

作　　者：邓伟[1] 徐妍博 Deng Wei;Xu Yanbo(Institute of Multipurpose Utilization of Mineral Resources,CAGS,Technology Innovation Center for Comprehensive Utilization of Strategic Minerals Resources,Ministry of Natural Resources,Chengdu,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,自然资源部战略性矿产综合利用工程技术创新中心,四川成都610041

出　　处：《矿产综合利用》2023年第4期103-113,共11页Multipurpose Utilization of Mineral Resources

基　　金：中国地质调查局地质大调查项目(DD20230039);四川省重点研发项目(2022YFS0455);国家重点研发计划青年科学家项目(2021YFC2900800)。

摘　　要：这是一篇矿物加工工程领域的文章。铍有“超级金属”和“尖端金属”之称,被列为我国关键性和战略性矿产资源。绿柱石是铍金属的重要来源,但由于原矿品位低和受选矿技术的限制,低品位绿柱石的可利用性难题至今未能得到解决,因此本文对川西低品位铍矿进行选矿实验研究。本文采用自主研制的新型高效的无机组合活化剂MD-2以及螯合捕收剂ST-12,针对九龙地区BeO品位0.089%的原矿,在磨矿细度-0.074 mm含量89.1%的条件下,经“一次粗选、一次扫选、六次精选”的浮选闭路实验,获得了BeO品位4.09%、BeO回收率89.60%的铍精矿。闭路浮选铍精矿经磁场强度为0.8 T的一段强磁选后,可将BeO品位由4%提高到5%以上,达到合格铍精矿品位要求,且BeO作业回收率较高,达到了87.08%,技术指标良好。本次实验开发出的“浮选富集-磁选提质”选矿整体技术,最终获得精矿BeO品位为5.47%,BeO回收率为78.09%。本研究成果可为该矿以及同类矿产资源的开发利用提供重要的技术支撑。This is an essay in the field of mineral processing engineering.Beryllium is known as "super metal" and "cutting-edge metal",and is listed as a key and strategic mineral resource in China.Beryl is an important source of beryllium,but due to the low grade of the raw ore and the limitations of beneficiation technology,the problem of the availability of low-grade beryl has not been solved yet.Therefore,this article conducts beneficiation experiments on extremely low-grade beryllium ore in western Sichuan.Selfdeveloped new and efficient inorganic combination activator MD-2 and chelating collector ST-12 are developed and employed.For the raw ore with a BeO grade of 0.089% in the Jiulong area,under the condition of grinding fineness of-0.074 mm content of 89.1%,a beryllium concentrate with a BeO grade of4.09% and a BeO recovery rate of 89.60% was obtained through a flotation closed circuit experiment of "one roughing,one scavenging,and six cleanings".After a stage of high intensity separation with a magnetic field strength of 0.8 T,the BeO grade of the closed circuit flotation of beryllium concentrate can be increased from 4% to over 5%,meeting the requirements for qualified beryllium concentrate grade.The BeO operation recovery rate reaches 87.08%,and the technical indicators are good.The overall beneficiation technology of "flotation enrichment-magnetic separation upgrading" developed in this experiment obtained concentrate with a BeO grade of 5.47% and a BeO recovery rate of 78.09%.The research findings of this study can provide important technical support for the development and utilization of this mine and similar mineral resources.

关 键 词：铍 绿柱石 矿物加工工程 工艺技术 综合利用 

分 类 号：TD955[矿业工程—选矿]