Solid-liquid phase equilibria of ternary system NH4+, Ca2+ // SO42-- H2O at 323.2 and 348.2K, and its application in the comprehensive utilization of waste secondary gypsum - Changhao Wu; Xudong Yu; Nan Zhang; Jing Li; Qi Li; Yousheng Yang; Ke Chen; Bo Yang; Shuang Wang; Yiping Liu; Zhenwen Xing (Journal of Environmental Chemical Engineering, 2025)