Effect of Fe<sup>3+</sup> on the Activation of Fluorite and Its Flotation Separation from Calcite in Floating Scheelite Tailings

NING Jiangfeng; ZENG Jianhong; XU Hanbing; GENG Liang; CUI Rui; YANG Zhehui

doi:10.13779/j.cnki.issn1001-0076.2024.02.010

2024 Vol. 44, No. 2

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Article navigation > Conservation and Utilization of Mineral Resources > 2024 > 44(2): 74-79

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NING Jiangfeng, ZENG Jianhong, XU Hanbing, GENG Liang, CUI Rui, YANG Zhehui. Effect of Fe3+ on the Activation of Fluorite and Its Flotation Separation from Calcite in Floating Scheelite Tailings[J]. Conservation and Utilization of Mineral Resources, 2024, 44(2): 74-79. doi: 10.13779/j.cnki.issn1001-0076.2024.02.010

Citation:

NING Jiangfeng, ZENG Jianhong, XU Hanbing, GENG Liang, CUI Rui, YANG Zhehui. Effect of Fe³⁺ on the Activation of Fluorite and Its Flotation Separation from Calcite in Floating Scheelite Tailings[J]. Conservation and Utilization of Mineral Resources, 2024, 44(2): 74-79. doi: 10.13779/j.cnki.issn1001-0076.2024.02.010

Effect of Fe³⁺ on the Activation of Fluorite and Its Flotation Separation from Calcite in Floating Scheelite Tailings

1.
Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China
2.
College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

Received Date: 20 March 2024

Publish Date: 15 April 2024

Abstract

Abstract

In the flotation of scheelite, fluorite and calcite, the addition of inhibitors often increases the difficulty of the subsequent flotation separation of fluorite and calcite. The activation effect of Fe³⁺ on suppressed fluorite in floating scheelite tailings and its effect on flotation separation from calcite were studied through flotation test, adsorption capacity test, Zeta potential measurement and solution chemical calculation. The results of single mineral flotation test showed that the inhibition effect of Fe³⁺ on calcite was much greater than that of fluorite. When water glass was added separately, two minerals were inhibited simultaneously. Under the conditions of pH 8.0, 300 mg/L sodium silicate and 1.5×10⁻⁴ mol/L sodium oleate, the recovery rates of fluorite and calcite were 13.49% and 16.83%, respectively. When Fe³⁺ was introduced into the water glass system, Under the conditions of pH 8.0, 75 mg/L sodium silicate, 3×10⁻⁴ mol/L Fe³⁺ and 1.5×10⁻⁴ mol/L sodium oleate, the flotation recovery rates of fluorite and calcite were 82.01% and 15.64%, respectively. The addition of Fe³⁺ can improve the floatability of suppressed fluorite and selectively activate fluorite in water glass system. The mechanism analysis showed that Fe³⁺ was more likely to adsorb on the surface of calcite, which hindered the adsorption of sodium oleate. The hydrolyzed components Fe(OH)₂⁺ and Fe(OH)₄⁻ of Fe³⁺ in solution selectively reacted with the hydrolyzed components Si(OH)₄ and SiO(OH)₃⁻ of water glass on fluorite surface to form Fe⁺− water glass polymer after adding Fe³⁺ to water glass system. The hydrolyzed components of water glass on the surface of fluorite were reduced, and the floatability of fluorite was restored. However, Fe⁺− water glass polymer were more adsorbed on the surface of calcite, which further inhibited the flotation of calcite.
- fluorite /
- calcite /
- Fe³⁺ /
- action of activation /
- flotation

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References

[1]	李敬, 张寿庭, 商朋强, 等. 萤石资源现状及战略性价值分析[J]. 矿产保护与利用, 2019, 39(6): 66−72. Google Scholar LI J, ZHANG S T, SHANG P Q, et al. Fluorite resources present situation and strategic value analysis[J]. Conservation and Utilization of Mineral Resources, 2019, 39(6): 66−72. Google Scholar
[2]	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. Overview of fluorite resources and processing technology in china[J]. Conservation and Utilization of Mineral Resources, 2022, 42(2): 49−58. Google Scholar
[3]	曾小波, 印万忠. 共伴生型萤石矿浮选研究进展与展望[J]. 矿产综合利用, 2021(1): 1−7. doi: 10.3969/j.issn.1000-6532.2021.01.001 CrossRef Google Scholar ZENG X B, YIN W Z. Research progress and prospect of flotation of associated fluorite minerals[J]. Comprehensive Utilization of Mineral Resources, 2021(1): 1−7. doi: 10.3969/j.issn.1000-6532.2021.01.001 CrossRef Google Scholar
[4]	李纪, 李晓东, 黄伟生. 钨尾矿浮选回收萤石预处理实验研究[J]. 有色金属(选矿部分), 2013(5): 28−30. Google Scholar LI J, LI X D, HUANG W S. Experimental study on pretreatment of fluorite recovered from tungsten tailings by flotation[J]. Nonferrous Metals (Mineral Processing Section), 2013(5): 28−30. Google Scholar
[5]	曾礼强, 蒋巍, 陈文胜, 等. 钨矿浮选残余药剂对伴生萤石浮选的影响研究及实践[J]. 中国钨业, 2021(6): 32−40. doi: 10.3969/j.issn.1009-0622.2021.06.004 CrossRef Google Scholar ZENG L Q, JIANG W, CHEN W S, et al. Effect of tungsten ore flotation residual reagent on the flotation of associated fluorite[J]. Tungsten Industry in China, 2021(6): 32−40. doi: 10.3969/j.issn.1009-0622.2021.06.004 CrossRef Google Scholar
[6]	匡敬忠, 邹耀伟, 李琳, 等. 改性水玻璃和捕收剂KC₂对萤石与方解石, 石英浮选分离的作用效果[J]. 化工矿物与加工, 2016, 45(10): 21−24. Google Scholar KUANG J Z, ZOU Y W, LI L, et al. Effects and action mechanism of modified sodium silicate and KC₂ collector on flotation separation of fluorite from calcite and quartz[J]. Chemical Minerals and Processing, 2016, 45(10): 21−24. Google Scholar
[7]	汤家焰, 何嘉宁, 鲁向锦, 等. 油酸钠体系中铈离子对萤石和方解石浮选的影响[J]. 矿冶工程, 2023, 43(2): 48−51. doi: 10.3969/j.issn.0253-6099.2023.02.011 CrossRef Google Scholar TANG J Y, HE J N, LU X J, et al. Effect of Ce³⁺ in sodium oleate system on flotation of fluorite and calcite[J]. Mining and Metallurgical Engineering, 2023, 43(2): 48−51. doi: 10.3969/j.issn.0253-6099.2023.02.011 CrossRef Google Scholar
[8]	DENG R D, YANG X F, HU Y, et al. Effect of Fe(Ⅱ) as assistant depressant on flotation separation of scheelite from calcite[J]. Minerals Engineering, 2018, 118: 133−140. doi: 10.1016/j.mineng.2017.12.017 CrossRef Google Scholar
[9]	QIAN W, DONG L Y, JIAO F, et al. Use of citric acid and Fe(Ⅲ) mixture as depressant in calcite flotation[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2019, 578: 1−8. Google Scholar
[10]	宁江峰, 李茂林, 崔瑞, 等. Fe³⁺与水玻璃组合抑制剂对萤石和方解石浮选分离的影响[J]. 矿产保护与利用, 2020, 40(6): 64−70. Google Scholar NING J F, LI M L, CUI R, et al. Effect of Fe³⁺ and sodium silicate as combination inhibitors on flotation separation of fluorite and calcite[J]. Conservation and Utilization of Mineral Resources, 2020, 40(6): 64−70. Google Scholar
[11]	王淀佐, 胡岳华. 浮选溶液化学[M]. 长沙: 湖南科学技术出版社, 1988: 336−337. Google Scholar WANG D Z, HU Y H. Flotation solution chemistry[M]. Changsha: Hu’nan Science and Technology Press, 1988: 336−337. Google Scholar
[12]	DONG L Y, JIAO F, QIN W Q, et al. Effect of acidified water glass on the flotation separation of scheelite from calcite using mixed cationic/anionic collectors[J]. Applied Surface Science, 2018, 444: 747−756. doi: 10.1016/j.apsusc.2018.03.097 CrossRef Google Scholar
[13]	FENG B, LUO X P, WANG J Q, et al. The flotation separation of scheelite from calcite using acidified sodium silicate as depressant[J]. Minerals Engineering, 2015, 80: 45−49. doi: 10.1016/j.mineng.2015.06.017 CrossRef Google Scholar
[14]	WEI Z, HU Y H, HAN H S, et al. Selective flotation of scheelite from calcite using Al−Na₂SiO₃ polymer as depressant and Pb−BHA complexes as collector[J]. Minerals Engineering, 2018, 120: 29−34. doi: 10.1016/j.mineng.2018.01.036 CrossRef Google Scholar