The Optimal Conditions of Preparation of Phosphogypsum-Based Calcium Sulfate Hemihydrate Whiskers by Hydrothermal Method Using Phosphogypsum
作者： Faqin Dong , Hua He , Ping He , Wei Yang , Longhua Xu
DOI: 10.1007/978-3-319-13948-7_9
关键词:
摘要: Calcium sulfate hemihydrate whisker was prepared successfully by hydrothermal method with phosphogypsum; the morphology and synthesis rate of calcium were very sensitive to reaction temperature, time, additives. Therefore, L25(56) orthogonal experiments carried out obtain optimal conditions. Composition, morphology, structure characterized SEM, XRD, FT-IR. The results showed that conditions ball-milling time 1.5 h, temperature 160 °C, 2 solid–liquid mass ratio 1:20, V (glycerol)/V (solution) = 10 %, drying 140 °C. 95 %; its aspect up 45.
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