%0 Journal Article
%T Preparation of calcium sulfate whisker using waste residue phosphogypsum by hydrothermal method<br>以废渣磷石膏为原料水热法制备硫酸钙晶须
%A Huang Zheyuan
%A Dong Faqin
%A Dai Qunwei
%A Zhang Wei
%A <br>黄哲元
%A 董发勤
%A 代群威
%A 张伟
%J 环境工程学报
%D 2012
%I 
%X Using phosphogypsum as raw material,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 th optimal reaction conditions were temperature of 140 ℃,time of 2 h,initial solid-to-liquid ratio of 1∶ 10,the best additive of glycerin with dosage of Vglycerin/Vsolution=50%.The product was hexagonal CaSO4·0.5H2O whisker with diameter 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.
%K phosphogypsum
%K hydrothermal method
%K calcium sulfate whiskers
%K soluble-phosphorus
%K mechanism<br>磷石膏
%K 水热法
%K 硫酸钙晶须
%K 可溶磷
%K 机理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=B5A688D5BB062443C49212F02987380F&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=CA4FD0336C81A37A&sid=170CE8B011EA4FD9&eid=717CC18E05F2AFA0&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=14