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Preparation of Multifunctional Fused Magnesium Phosphate Fertilizer from Low-Grade Phosphate Ores

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Characterization of Minerals, Metals, and Materials 2021

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

Low-grade phosphate ores are the main phosphorus resources in China, and it’s difficult to upgrade owing to most ores belonging to collophanite with fine-grained dissemination. These inferior ores with high silicon and magnesium contents are favorable raw materials to produce fused magnesium phosphate fertilizer (FMP) for the crop growth. However, high temperature of Ca3(PO4)2–SiO2–MgO system for the smelting of phosphorite resulted in the energy-extensive consumption. In current study, the effect of K2O addition on the smelting of phosphorite was investigated via thermodynamic calculations and experiment validation to reduce the smelting temperature. It has been found that 3–5% K2O can reduce the melting temperature of the Ca3(PO4)2–SiO2–MgO ternary system by about 80 °C. Moreover, K2O addition can enhance the activities of various nutrients such as potassium and magnesium in the FMP products after smelting and water quenching, and the effective conversion of the nutrients is increased by 5% compared with that without K2O addition.

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Acknowledgements

The authors wish to express their thanks to the National Key Research and Development Program of China (No. 2016YFD0200401, 2018YFC1900200) and the Program for Innovative Research Team (in Science and Technology) in University of Henan Province (No. 19IRTSTHN028) for the financial support.

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Authors and Affiliations

  1. National Center for Research & Popularization of Calcium, Magnesium, Phosphate and Compound Fertilizer Technology, Zhengzhou University, Zhengzhou, Henan, 450001, China

    Luyi Li, Yuan Yao, Cuihong Hou, Shouyu Gu & Haobin Wang

Authors
  1. Luyi Li
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  2. Yuan Yao
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  3. Cuihong Hou
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  4. Shouyu Gu
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  5. Haobin Wang
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Corresponding author

Correspondence to Cuihong Hou .

Editor information

Editors and Affiliations

  1. CanmetMATERIALS, Hamilton, ON, Canada

    Jian Li

  2. ArcelorMittal, Schererville, IN, USA

    Mingming Zhang

  3. Michigan Technological University, Houghton, MI, USA

    Bowen Li

  4. Military Institute of Engineering, Rio de Janeiro, Brazil

    Sergio Neves Monteiro

  5. Amman, Jordan

    Shadia Ikhmayies

  6. Middle East Technical University, Ankara, Turkey

    Yunus Eren Kalay

  7. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  8. University of New South Wales, Canberra, ACT, Australia

    Juan P. Escobedo-Diaz

  9. Los Alamos National Laboratory, Los Alamos, NM, USA

    John S. Carpenter

  10. United States Army Research Laboratory, Abingdon, MD, USA

    Andrew D. Brown

  11. Eurofins EAG Materials Science, LLC, Liverpool, NY, USA

    Rajiv Soman

  12. United States Naval Research Laboratory, Washington, DC, USA

    Alex Moser

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Li, L., Yao, Y., Hou, C., Gu, S., Wang, H. (2021). Preparation of Multifunctional Fused Magnesium Phosphate Fertilizer from Low-Grade Phosphate Ores. In: Li, J., et al. Characterization of Minerals, Metals, and Materials 2021. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-65493-1_11

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