%0 Journal Article
%T Solubility Measurement of Calcium Sulfate Dihydrate in NH4Cl-（NH4）2SO4 Solutions and Thermodynamic Calculation<br>二水硫酸钙在铵盐溶液中溶解度测定及热力学计算
%A TIAN Ping
%A NING Peng-ge
%A CAO Hong-bin
%A LI Zhi-bao
%A <br>田萍
%A 宁朋歌
%A 曹宏斌
%A 李志宝
%J 过程工程学报
%D 2012
%I 
%X The solubility of CaSO4·2H2O in the solution of NH4Cl and mixed solution of NH4Cl-(NH4)2SO4 was studied using dissolution method in a temperature range from 298.15 to 343.15 K.The results showed that in the two solutions the solubility of CaSO4·2H2O increased with increasing of NH4Cl concentration,but the temperature had little effect.In addition,a mixed electrolyte NRTL model was employed to calculate the solubility of CaSO4·2H2O in different concentrations of NH4Cl at various temperatures.New model parameters for electrolyte NRTL model were obtained via regression of experimental data.The calculated solubility was in good agreement with experimental values with the relative average deviation of 2.36%.
%K calcium sulfate dehydrate(gypsum)
%K solubility
%K ammonium chloride
%K ammonium sulfate
%K electrolyte NRTL model<br>二水硫酸钙
%K 溶解度
%K 氯化铵
%K 硫酸铵
%K 电解质NRTL模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=21CB0722CA48644F5B2BF895E1C2A311&yid=99E9153A83D4CB11&vid=59906B3B2830C2C5&iid=E158A972A605785F&sid=42FF82ADD37D41AA&eid=039DCCB9394D9766&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=0