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离子液体对锂辉石和黄长石固溶体泡沫浮选的影响。

Influencing the froth flotation of LiAlO and melilite solid solution with ionic liquids.

作者信息

Qiu Hao, Degenhardt Christin, Feuge Niklas, Goldmann Daniel, Wilhelm René

机构信息

Institute of Mineral and Waste Processing, Recycling and Circular Economy Systems, Clausthal University of Technology Walther-Nernst-Str. 9 38678 Clausthal-Zellerfeld Germany

Institute of Organic Chemistry, Clausthal University of Technology Leibnizstrasse 6 38678 Clausthal-Zellerfeld Germany

出版信息

RSC Adv. 2022 Oct 17;12(45):29562-29568. doi: 10.1039/d2ra02922g. eCollection 2022 Oct 11.

DOI:10.1039/d2ra02922g
PMID:36320758
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9574522/
Abstract

In the present work experiments for single mineral flotation against LiAlO and melilite s.s. were carried out for seven ionic liquids (ILs). From these, IL-1 with an imidazolium cation and a bromide anion and IL-7 with a pyridinium cation and a bromide anion were selected for further flotation experiments (dosage, pH). Flotation experiments were also conducted using naphthenic acid, a conventional flotation fatty acid-based collector, and FS-2, a commercial collector in order to compare the results with ILs. Moreover, the effects of different anions in the ILs on the flotation were evaluated and a significant influence on the hardness of anions was found on the flotation process. Finally, a pre-functionalization was also explored with modified cholesterol derivatives, comparing the effect of cholesterylsulfate and cholesterylphosphate on the flotation of LiAlO and melilite s.s. This study is vital for the further optimization of lithium recovery from the pyrometallurgical recycling path of lithium-ion batteries and the flotation of primary minerals such as aluminosilicates.

摘要

在本工作中，针对七种离子液体（ILs）开展了针对偏铝酸锂和硅镁石固溶体的单一矿物浮选实验。从中选取了具有咪唑鎓阳离子和溴离子的IL-1以及具有吡啶鎓阳离子和溴离子的IL-7进行进一步的浮选实验（用量、pH值）。还使用环烷酸（一种传统的基于脂肪酸的浮选捕收剂）和FS-2（一种商业捕收剂）进行了浮选实验，以便与离子液体的结果进行比较。此外，评估了离子液体中不同阴离子对浮选的影响，发现阴离子硬度对浮选过程有显著影响。最后，还探索了用改性胆固醇衍生物进行预官能化，比较了硫酸胆固醇和磷酸胆固醇对偏铝酸锂和硅镁石固溶体浮选的影响。这项研究对于进一步优化从锂离子电池火法冶金回收路径中回收锂以及对诸如铝硅酸盐等原生矿物的浮选至关重要。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/662d0f4961ff/d2ra02922g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/1cb49e8bf3f8/d2ra02922g-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/51300b3560e1/d2ra02922g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/41711837b865/d2ra02922g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/e3990e864e69/d2ra02922g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/04fe7278b537/d2ra02922g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/0edb058c7ada/d2ra02922g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/662d0f4961ff/d2ra02922g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/1cb49e8bf3f8/d2ra02922g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/dabd53de1c13/d2ra02922g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/6dfb2f71a463/d2ra02922g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/51300b3560e1/d2ra02922g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/41711837b865/d2ra02922g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/e3990e864e69/d2ra02922g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/04fe7278b537/d2ra02922g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/0edb058c7ada/d2ra02922g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6832/9574522/662d0f4961ff/d2ra02922g-f9.jpg

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本文引用的文献

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Langmuir. 2020 Sep 8;36(35):10494-10503. doi: 10.1021/acs.langmuir.0c01673. Epub 2020 Aug 24.
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Recent advances on ionic liquid uses in separation techniques.
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Imidazolinium salts as catalysts for the aza-Diels-Alder reaction.咪唑鎓盐作为氮杂狄尔斯-阿尔德反应的催化剂。
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