Preparation of Calcium Sulfate Whisker Using Waste Residue of Phosphogypsum by Hydrothermal Method
Using waster residue phosphogypsum as raw materials ,calcium sulfate whiskers were prepared by the hydrothermal method. The products were characterized by XRD, SEM and FT-IR, etc. The effects of reaction temperature and time, initial solid-to-liquid ratio of slurry, and different additives on the morphology and content of the samples soluble-phosphates were studied.The results showed that the optimal reaction conditions were at the temperature of 140 ℃, time of 2h , initial solid-to-liquid ratio of 1:10, the best additive of glycerin with dosage of Vglycerin/Vsolution=50%. The of 1~3 μm and aspect ratio of 45. The synthesis rate was about 95%, and the soluble phosphate was decreased from in raw materials 0.41% to 0.21% in the products.
HUANG Zheyuan DONG Faqin
School of Environment and Resource Southwest University of Science and Technology SWUST Mianyang 621 Key Laboratory of Solid Waste Treatment and the Resource Recycle SWUST, Ministry of Education Mianya
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）