Rare Earth Elements Distribution During Phosphoric Acid Production

Reactive silica additives, such as clays, can increase the filterability of phosphogypsum (PG) during wet phosphoric acid production from phosphate rock (PR). In this study, the effect of adding inexpensive fly ash waste (34 kg per t PR) together with lower quantities of pure silica (8.5 kg per t PR) on the radioactivity of PG was investigated. The addition of fly ash waste/pure silica reduced the radiological activity of the PG by roughly 30%. The reduction was attributed to decreased activities from 238U (60% reduction) and 226Ra (30% reduction) in PG. Besides, P2O5 losses were slightly decreased.

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Better filterability and reduced radioactivity of phosphogypsum during phosphoric acid production in Morocco using a fly ash waste and pure silica additive

Arhouni

Hakkar

Mahrou

et al. 2022

J Radioanal Nucl Chem

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A Precipitation-Adsorption Technique for the Removal of Fluoride and Phosphate in Phosphogypsum: an Economical and Green Method

Zhang

et al. 2022

Mining, Metallurgy & Exploration

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Rare Earth Elements Distribution During Phosphoric Acid Production

Cited by 2 publications

References 28 publications

Better filterability and reduced radioactivity of phosphogypsum during phosphoric acid production in Morocco using a fly ash waste and pure silica additive

Better filterability and reduced radioactivity of phosphogypsum during phosphoric acid production in Morocco using a fly ash waste and pure silica additive

A Precipitation-Adsorption Technique for the Removal of Fluoride and Phosphate in Phosphogypsum: an Economical and Green Method

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