Experimental Study on Separation of Fluorite and Rare Earth from a REO-CaF<sub>2</sub> Middlings in Sichuan

LI Jiawen; XIE Xian; YANG Bing; ZHANG Yu; DU Jiaao; WU Yuyao

doi:10.13779/j.cnki.issn1001-0076.2023.05.003

2023 Vol. 43, No. 5

Article Contents

Article navigation > Conservation and Utilization of Mineral Resources > 2023 > 43(5): 19-24

Next Article Previous Article

LI Jiawen, XIE Xian, YANG Bing, ZHANG Yu, DU Jiaao, WU Yuyao. Experimental Study on Separation of Fluorite and Rare Earth from a REO-CaF2 Middlings in Sichuan[J]. Conservation and Utilization of Mineral Resources, 2023, 43(5): 19-24. doi: 10.13779/j.cnki.issn1001-0076.2023.05.003

Citation:

LI Jiawen, XIE Xian, YANG Bing, ZHANG Yu, DU Jiaao, WU Yuyao. Experimental Study on Separation of Fluorite and Rare Earth from a REO-CaF₂ Middlings in Sichuan[J]. Conservation and Utilization of Mineral Resources, 2023, 43(5): 19-24. doi: 10.13779/j.cnki.issn1001-0076.2023.05.003

Experimental Study on Separation of Fluorite and Rare Earth from a REO-CaF₂ Middlings in Sichuan

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093 , China
2.
State Key Laboratory of Complex Nonferrous Metal Resources Clean, Utilization, Kunming 650093, China
3.
National & Reglonal Engineering Research Center for green comprehensive Utilization of Gangue Resources from Metal Mines, Kunming 650093, China
4.
Zhongxi( Liangshan ) Resources Comprehensive Utilization Co., Ltd., Liangshan 615601, China

More Information

Corresponding author: XIE Xian

Received Date: 10 April 2023

Publish Date: 25 October 2023

Abstract

Abstract

The rare earth oxide (REO) content of a fluorite and rare earth mixed ore from Sichuan is 5.85%, the fluorite content is 85.69%, and there are a small amount of quartz, calcite, and other gangue minerals. To achieve effective separation and comprehensive recovery of two valuable minerals, based on their differences in properties, the rare earth magnetic separation−fluorite flotation process was implemented. Following the magnetic separation process of "one stage roughing, one stage cleaning, and one stage scavenging" a rare earth concentrate with a REO content of 66.32% and a rare earth recovery of 80.01% was obtained. The rare earth magnetic separation tailings were treated with 200 g/t of sodium carbonate, a combined inhibitor consisting of modified water glass and sodium humate at 300 and 100 g/t, respectively, and 100 g/t of modified fatty acid collector YK−6. Through a single−stage flotation operation, a fluorite concentrate with CaF₂ content of 98.29% and CaF₂ recovery of 91.69% was obtained, with all indices meeting satisfactory levels.
- rare earth /
- magnetic separation /
- fluorite /
- flotation /
- comprehensive recovery

FullText(HTML)

References

[1]	刘琦, 周芳, 冯健, 等. 我国稀土资源现状及选矿技术进展[J]. 矿产保护与利用, 2019, 39(5): 76−83. Google Scholar LIU Q, ZHOU F, FENG J, et al. Status of rare earth resources and progress of mineral processing technology in China[J]. Conservation and Utilization of Mineral Resources, 2019, 39(5): 76−83. Google Scholar
[2]	李育彪, 杨旭. 萤石浮选药剂及浮选机理研究进展[J]. 金属矿山, 2022(10): 122−129. Google Scholar LI Y B, YANG X. Research progress of fluorite flotation reagents and flotation mechanism[J]. Metal mine, 2022(10): 122−129. Google Scholar
[3]	李育彪, 杨旭. 我国萤石资源及选矿技术进展[J]. 矿产保护与利用, 2022, 42(2): 49−58. Google Scholar LI Y B, YANG X. Progress of fluorite resources and beneficiation technology in China[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 49−58. Google Scholar
[4]	傅太宇, 李葆华, 董晓燕, 等. 我国稀土矿床分布、分类及特征分析[J]. 河南科技, 2015(14): 124−126. Google Scholar FU T Y, LI B H, DONG X Y, et al. Distribution, classification and characteristics of rare earth deposits in China[J]. Henan Science and Technology, 2015(14): 124−126. Google Scholar
[5]	李丽匣, 刘廷, 袁致涛, 等. 我国萤石矿选矿技术进展[J]. 矿产保护与利用, 2015(6): 46−53. Google Scholar LI L X, LIU T, YUAN Z T, et al. Advances in fluorite ore beneficiation technology in China[J]. Conservation and Utilization of Mineral Resources, 2015(6): 46−53. Google Scholar
[6]	俞献林, 杨长安. 湖南某方解石型萤石矿浮选实验研究[J]. 现代矿业, 2022, 38(8): 174−177. Google Scholar YU X L, YANG C G. Experimental study on flotation of a calcite fluorite ore in Hunan[J]. Modern Mining, 2022, 38(8): 174−177. Google Scholar
[7]	窦源东, 张全明, 唐俊杰, 等. 改性水玻璃在含高岭土复杂萤石浮选中的综合应用[J]. 有色金属(选矿部分), 2022(5): 130−136. Google Scholar DOU Y D, ZHANG Q M, TANG JUNJIE, ETC. Comprehensive application of modified water glass in flotation of complex fluorite containing kaolin[J]. Nonferrous metals(mineral processing part), 2022(5): 130−136. Google Scholar
[8]	曹海英. 萤石与方解石及石英的浮选分离[D]. 赣州: 江西理工大学, 2013. Google Scholar CAO H Y. Flotation separation of fluorite from calcite and quartz[D]. Ganzhou: Jiangxi University of Science and Technology, 2013. Google Scholar