摘要
采用冀辽内三省交界处精选磷铁矿为主要原料,研究了湿法磷酸预分解磷矿的反应条件。在正交试验的基础上,通过单因素试验进一步确定了湿法磷酸预分解磷矿最优反应条件,即反应温度80℃,液固比3∶1,反应时间90min,搅拌速度320 r/min。在该条件下,所得预分解磷酸中CaO/P2O5的比值为0.17(湿法磷酸中CaO/P2O5的比值为0.07),可节约硫酸11%,节约石灰35%。
Taking phosphate iron rock from the boundary areas of Hebei, Liaoning and Inner Mongolia provinces as the main raw materials, the reaction conditions of pre-decomposing phosphate rock with wet-process phosphoric acid was studied. Based on the orthogonal experiments, single factor experiments were carried out to determine the optimum reaction condition, it was that the reaction temperature was 80 ℃, the ratio of liquid to solid was 3 ： 1, reaction time was 90 min and mixed speed was 320 r/min. Under the reaction condition, the ratio of CaO/P2O3 was 0.17 in the pre-decomposed phosphoric acid （compared the ratio of CaO/P2O5 was 0.07 in wet-process phosphoric acid）, which could save the sulphuric acid by 11% and save lime by 35 %.
出处
《化工矿物与加工》
CAS
北大核心
2010年第4期13-15,共3页
Industrial Minerals & Processing
关键词
湿法磷酸
预分解
正交试验
wet-process phosphoric acid
pre-decomposition
orthogonal experiments
作者简介
作者简介：陈红琼（1986-），女．云南曲靖人，在读硕士研究生，E-mail：chenhongqiong3869@163．com。
通讯联系人：应建康,E-mail：chenhongqiong3869@163．com。
