四川大陆槽稀土尾矿回收萤石实验  

Recovery of Fluorite from a Low-grade Rare Earth Tailing in Sichuan

作　　者：周政 欧阳安妮 熊文良[1] 夏小洪 杨伟 谢志远 朱英江 ZHOU Zheng;OUYANG Anni;XIONG Wenliang;XIA Xiaohong;YANG Wei;XIE Zhiyuan;ZHU Yingjiang(Institute of Multipurpose Utilization of Mineral Resources,CAGS,Sichuan Rare Earth TechnologyInnovation Center,Technical Innovation Center of Rare Earth Resources,China Geological Survey,Chengdu 610041,Sichuan,China;Sichuan Geological and Mineral Resources Group Co.,Ltd.,Chengdu 610062,Sichuan,China;Sichuan Hedi Mining Industry Development Co.,Ltd.,Dechang 615500,Sichuan,China)

机构地区：[1]中国地质科学院矿产综合利用研究所,四川省稀土技术创新中心,中国地质调查局稀土资源应用技术创新中心,四川成都610041 [2]四川省地质矿产(集团)有限公司,四川成都610062 [3]四川和地矿业发展有限公司,四川德昌615500

出　　处：《矿产综合利用》2024年第4期43-49,共7页Multipurpose Utilization of Mineral Resources

基　　金：四川省科技计划项目(2023ZDZX0005、2022ZHCG0124、2022JDR0355、2022ZYD0126)。

摘　　要：这是一篇矿物加工工程领域的文章。本文以德昌大陆槽稀土选矿尾矿为研究对象,开展了萤石回收的选矿实验研究,确定了该尾矿中萤石回收的“浮选脱硫-混合浮选-萤石、锶钡浮选分离”选矿工艺流程和药剂制度,在浮选实验中使用了新型捕收剂MQY与高效抑制剂DC-2,在对萤石高效捕收的同时实现了萤石与脉石矿物的精准分离,最终全流程实验获得了CaF_(2)品位94.39%,回收率51.41%的萤石精矿,实验指标较为理想。本文验证了从大陆槽稀土尾矿中回收萤石具有较好的可行性,最终确定的选矿工艺流程较为合理,实验指标较为良好,可作为大陆槽稀土尾矿中萤石资源利用回收的技术依据。This is an article in the field of mining processing engineering.This article takes Dechang Daluchao rare earth mineral processing tailings as the research object,conducts a beneficiation test study on fluorspar recovery,and determines the beneficiation process flow and reagent of"flotation desulphurization-mixed flotation-flotation separation of fluorite,strontium and barium"for fluorite recovery.In the flotation test,the new MQY collector and DC-2 high-efficiency inhibitor were used to efficiently capture fluorite while achieving precise separation of fluorite and gangue minerals.In the final full-process test,a fluorspar concentrate with a CaF2 grade of 94.39%and a recovery rate of 51.41%was obtained.The test indicators were relatively ideal.This article tested and verified the feasibility of recovering fluorspar from the Dalunchao rare earth tailings.The final beneficiation process is reasonable and has good test indicators.It can be used as a technical basis for the utilization and recovery of fluorspar resources in the Dalunchao rare earth tailings.

关 键 词：矿物加工工程 稀土尾矿 萤石 混合浮选 抑制剂 

分 类 号：TD97[矿业工程—选矿] TD955