Open Access

ARTICLE

Single-Step Efficient Purification of Phosphogypsum via Wet Grinding and Microenvironmental Treatment

Shun Chen^1,2,3, Jingyuan Fan¹, Xingyang He^1,2,3,*, Ying Su^1,2,3, Jizhan Chen¹, Yiming Cao¹, Meng Fan¹, Zhihao Liu¹, Zihao Jin^1,2,3, Yubo Li^1,2,3

1 School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, 430068, China
2 Building Waterproof Engineering and Technology Research Center of Hubei Province, Hubei University of Technology, Wuhan, 430068, China
3 Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, Wuhan, 430068, China

* Corresponding Author: Xingyang He. Email:

(This article belongs to the Special Issue: Low-carbon Civil Engineering Materials: Materials Processing, Fluids and Medium Transport)

Fluid Dynamics & Materials Processing 2025, 21(7), 1673-1688. https://doi.org/10.32604/fdmp.2025.065003

Received 28 February 2025; Accepted 06 June 2025; Issue published 31 July 2025

Abstract

The presence of impurities in phosphogypsum has long impeded its effective utilization, highlighting the need for energy-efficient and sustainable purification methods. This study proposes a novel purification strategy that synergistically combines pH regulation and micelle-assisted treatment to create an optimized microenvironment for impurity removal. Under mechanical grinding conditions, this approach enhances the rheological properties of the phosphogypsum slurries and facilitates the dissolution and removal of impurity ions. Experimental results demonstrate that the synergistic method achieves a remarkable 64.01% increase in whiteness while significantly reducing soluble phosphorus and fluoride content in a single-step process. This technique not only achieves high purification efficiency but also offers a practical pathway for the high-value utilization of phosphogypsum. These findings suggest that this method has substantial potential for enhancing sustainable resource management and enabling broader industrial applications of purified phosphogypsum.

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Keywords

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