Enhanced Phosphorus Release from Phosphate Rock Activated with Lignite by Mechanical Microcrystallization: Effects of Several Typical Grinding Parameters

Xian-mei Zhang, Yi Li, Cheng Hu, Zhen-quan He, Ming-xing Wen, Guo-sheng Gai, Zhao-hui Huang, Yu-fen Yang, Xiang-Yang Hao and Xiao-yan Li
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Xian-mei Zhang: School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
Yi Li: School of Materials and metallurgy, Guizhou University, Guiyang 550025, China
Cheng Hu: School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
Zhen-quan He: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Ming-xing Wen: School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
Guo-sheng Gai: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Zhao-hui Huang: School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
Yu-fen Yang: School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Xiang-Yang Hao: School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, China University of Geosciences (Beijing), Beijing 100083, China
Xiao-yan Li: Tianjin cement industry design and research institute Co. Ltd., Tianjin 300400, China

Sustainability, 2019, vol. 11, issue 4, 1-16

Abstract: Recently, microcrystallization technology has gained much interest because of the enhanced dissolution of the target sample and promotion of the sustainable development of agriculture. Phosphorus (P) is one of the most important nutrients for increasing crop yield; the increase in effective P ratio directly from raw phosphate rock (PR) powder by mechanical grinding to increase its microcrystallinity is believed to be the best choice for this purpose. This study reports the improvement in the activation property of PR powder with different lignite ratios (1%, 2%, 3%, and 5%), particularly the relationship between particle-size distribution, specific surface area, granule morphology, and the citric acid-soluble P. It was found that a 3% lignite addition was the optimal treatment for increasing the release of citric acid-soluble P. The maximum total amount of dry matter from rapeseed cultivation and the available P after the test increased by 56.1% and 89.6%, respectively, with direct use of PR and microcrystallized PR powder (PR2), compared with the control test without any addition of phosphate minerals.

Keywords: microcrystallinity; medium-low-grade phosphate mineral; lignite; citric acid soluble (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:11:y:2019:i:4:p:1068-:d:207019

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