贵州织金含稀土磷矿石的浮选富磷降镁实验  

Flotation of Phosphorus Enrichment and Magnesium Reduction of Phosphate Ore Bearing Rare Earth Elements in Zhijin of Guizhou

作　　者：卯松[1,3,4] 章铁斌 沈智慧 张覃[2,3,4] MAO Song;ZHANG Tiebin;SHEN Zhihui;ZHANG Qin(Mining College,Guizhou University,Guiyang 550025,China;Guizhou Academy of Science,Guiyang 550001,China;National&Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025,China;Guizhou Key Laboratory of Comprehensive Utilization of Non-Metallic Mineral Resources,Guiyang 550025,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州科学院,贵州贵阳550001 [3]喀斯特地区优势矿产资源高效利用国家地方联合工程实验室,贵州贵阳550025 [4]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025

出　　处：《武汉工程大学学报》2021年第6期591-596,共6页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金(51864011);贵州省科技计划项目(黔科合平台人才[2018]5781号)。

摘　　要：针对贵州织金含稀土磷矿石进行了选矿富磷降镁实验,原矿P_(2)O_(5)品位21.80%,MgO质量分数8.31%,采用一段反浮选流程,可获得精矿P_(2)O_(5)品位33.35%,MgO质量分数为1.36%,P_(2)O_(5)回收率86.53%;考察了选矿产品中稀土元素总量(ΣREE)和重金属元素Pb、Cd的质量分数及走向,并分析精矿中ΣREE、重金属元素Pb与P_(2)O_(5)品位之间的相关性。结果表明:重金属元素Pb和稀土元素在精矿中富集,而重金属元素Cd在尾矿中富集,为后续含稀土磷矿石的分离利用提供了依据。A reverse flotation was carried out of Zhijin phosphate ore bearing rare earths.The P_(2)O_(5) grade and MgO content of raw ore were 21.80%and 8.31%,respectively.By using one-stage reverse flotation,the P_(2)O_(5) grade and MgO content of concentrate were 33.35%and 1.36%respectively,and the recovery of P_(2)O_(5) was 86.53%.The distribution of total rare earth elements content(ΣREE)and heavy metals(Pb and Cd)in the flotation products was investigated,and the correlation betweenΣREE,Pb and P_(2)O_(5) grade was analyzed.The results show that Pb and rare earth elements are enriched in the concentrate,and Cd is enriched in the tailings.This provids a basis for the subsequent separation and utilization of phosphate ore bearing rare earths.

关 键 词：含稀土磷矿石 反浮选 富磷降镁 稀土元素 重金属元素 

分 类 号：TD923.9[矿业工程—选矿]