Reduction of P2O5 and F from Phosphogypsum by CaO additionSri Rachmania Juliastuti, Nuniek Hendrianie, Yumna Dian Pawitra and Irham Raditya PutraMATEC Web Conf., 156 (2018) 03021DOI: https://doi.org/10.1051/matecconf/201815603021