Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation
Abstract As one of the bulk solid wastes in the Yellow River basin in China, fluorite tailings urgently need to be utilized as resources. In this paper, NaOH and Na2CO3 were used for alkali thermal activation of ground fluorite tailings under different temperature conditions, and the reactivity was...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-82560-y |
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| author | Hao Qiu Hongtao Su Hengyuan Liu Zhijian Guo Huifang Zhang Juntao Ma Xiao Wang |
| author_facet | Hao Qiu Hongtao Su Hengyuan Liu Zhijian Guo Huifang Zhang Juntao Ma Xiao Wang |
| author_sort | Hao Qiu |
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| description | Abstract As one of the bulk solid wastes in the Yellow River basin in China, fluorite tailings urgently need to be utilized as resources. In this paper, NaOH and Na2CO3 were used for alkali thermal activation of ground fluorite tailings under different temperature conditions, and the reactivity was analyzed by XRD, SEM and compressive strength after hydration, so as to evaluate the feasibility of fluorite tailings as geopolymer precursor. The results show that the fluorite tailings can exhibit certain reactivity under alkaline heat excitation, and significant amorphous glass phase can be detected. The better heat excitation temperature is 1000 °C, while there is not enough amorphous glass phase for hydration reaction at the lower or higher temperature. The compressive strength of the tailings harden paste can reach 7.2 MPa at 28d after excitation with 50%NaOH at 1000 °C, which is expected to be used as geopolymer precursor after excitation. |
| format | Article |
| id | doaj-art-327752e5f6fb46feba02cbe30bd25e8c |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-327752e5f6fb46feba02cbe30bd25e8c2025-01-12T12:19:08ZengNature PortfolioScientific Reports2045-23222025-01-0115111210.1038/s41598-024-82560-yPreparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activationHao Qiu0Hongtao Su1Hengyuan Liu2Zhijian Guo3Huifang Zhang4Juntao Ma5Xiao Wang6School of Civil Engineering and Communication, North China University of Water Resources and Electric PowerHenan Transport Investment Group Pingwan Expressway Co., LtdSchool of Civil Engineering and Communication, North China University of Water Resources and Electric PowerHenan Transport Investment Group Pingwan Expressway Co., LtdSchool of Civil Engineering and Communication, North China University of Water Resources and Electric PowerSchool of Civil Engineering and Communication, North China University of Water Resources and Electric PowerSchool of Civil Engineering and Communication, North China University of Water Resources and Electric PowerAbstract As one of the bulk solid wastes in the Yellow River basin in China, fluorite tailings urgently need to be utilized as resources. In this paper, NaOH and Na2CO3 were used for alkali thermal activation of ground fluorite tailings under different temperature conditions, and the reactivity was analyzed by XRD, SEM and compressive strength after hydration, so as to evaluate the feasibility of fluorite tailings as geopolymer precursor. The results show that the fluorite tailings can exhibit certain reactivity under alkaline heat excitation, and significant amorphous glass phase can be detected. The better heat excitation temperature is 1000 °C, while there is not enough amorphous glass phase for hydration reaction at the lower or higher temperature. The compressive strength of the tailings harden paste can reach 7.2 MPa at 28d after excitation with 50%NaOH at 1000 °C, which is expected to be used as geopolymer precursor after excitation.https://doi.org/10.1038/s41598-024-82560-yFluorite tailingsAlkali heat activationGeopolymer precursorAmorphous glass phase |
| spellingShingle | Hao Qiu Hongtao Su Hengyuan Liu Zhijian Guo Huifang Zhang Juntao Ma Xiao Wang Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation Scientific Reports Fluorite tailings Alkali heat activation Geopolymer precursor Amorphous glass phase |
| title | Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| title_full | Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| title_fullStr | Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| title_full_unstemmed | Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| title_short | Preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| title_sort | preparation and mechanical performance of fluorite tailings geopolymer precursor under alkaline heat activation |
| topic | Fluorite tailings Alkali heat activation Geopolymer precursor Amorphous glass phase |
| url | https://doi.org/10.1038/s41598-024-82560-y |
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