Preparation of ultrafine iron phosphate micro-powder from phosphate slag

¹ School of Environmental and Materials Engineering, Shanghai Polytechnic University, Shanghai 201209, P. R. China
² Research Center of Resource Recycling Science and Engineering, Shanghai Polytechnic University, Shanghai 200444, China

^a Corresponding author: ljwang@sspu.edu.cn

Abstract

In this experiment, ultrafine iron phosphate micro-powder was prepared by hydrothermal method which used phosphate slag as an iron source. The effects of reaction temperature, surfactants type and amount on its particle size were explored. The samples were characterized by using Malvern Laser Particle Size Analyzer (MS2000), X-Ray Diffractometer (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX).The results showed that at 160 °C, 1 wt%CTAB, monoclinic iron phosphate micro-powder was obtained with an average particle size about 0.4 μm which also has a good dispersion in aqueous solution.