磷石膏废渣生产硫酸钾新工艺研究——Ⅰ.磷石膏废渣制备硫酸铵工艺  

A study on the new production process for potassium sulfate from phosphogypsum Ⅰ. The preparing process of ammonium sulfate from phosphogypsum

作　　者：黄岳元[1] 赵天成[1] 张粉艳[1] 陈启石[1] 

机构地区：[1]西北大学化学工程学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2001年第4期315-318,共4页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省教委重点科研计划资助项目 (EG982 37);西北大学科研基金资助项目 (KG972 16 )

摘　　要：研究以磷石膏废渣和碳酸氢铵为原料制备硫酸铵工艺 ,用单因素试验法和多因素正交试验法研究了原料配比、反应温度、反应时间及搅拌转速等对原料转化率的影响 ,找到了最优工艺条件。在此条件下 ,碳酸氢铵转化率可达 97%以上 ,产品溶液的硫酸铵浓度可达 35 %以上。A preparing process for ammonium sulfate from phosphogypsum wastes and ammonium bicarbon was studied. The effects were also studied about the raw material mole ratio, temperature, time and the stir speed on the conversion of the raw material via individual experiments and orthogonal experiments. Meanwhile, the optimal conditions were found. Under these conditions, the conversion of ammonium bicarbonate and the content of ammonium sulfate in productive solution were more than 97% and 35%.

关 键 词：磷石膏 硫酸铵 制备工艺 废渣 氮肥 硫酸钾 

分 类 号：TQ441.11[化学工程—化学肥料工业]