Study on the Pretreatment Technology of Phosphogypsum[J]. Journal of Civil and Environmental Engineering, 2000, 22(5). DOI: 10.11835/j.issn.1674-4764.2000.05.016.
The economic and effective pretreatment is a key to its recycling into useful building materials. The pretreatment such as washing
neutralizing with quick lime
grinding
floating
screening
calcination etc. have been studied. The effectiveness
problems and feasibility of pretreatment are analyzed. This paper presents the pretreatment principle of phosphogypsum utilization. If the phosphogypsum utilized is more than hundred thousand tones per year
the washing technology is recommended
otherwise
the technology of neutralizing with quick lime and grinding should be chosen.