摘要
参考二水物湿法磷酸的生产工艺条件，进行了金河磷矿在硫、磷混酸中的酸解动力学研究．考察了矿粉粒度、硫酸浓度及反应温度对酸解过程的影响；选用考虑了自阻化因素的德罗兹多夫方程描述酸解过程的动力学；利用修改后的Gioia酸解模型求得了磷矿酸解过程的有效扩散系数．
In this paper,with reference to operating conditions of dihydrate Wet-process Phosphoric Acid(WPA)process used conventionally,the effects of the average rock particle size,sulfuric acid concentration and reaction temperature on the dissolution kinetics of Jinhe phosphate rock in a mixture of sulfuric and phosphoric acids were studied in detail experimentally,and consequently a series of dissolution kinetics curves were obtained.The Drozdov equation which takes into account the self-impeding effect is selected for simulating the dissolutin kinetics.With the aid of the Gioia's modified mathematical model for the simulation of phosphate rock acidulation,an effective diffusion coefficient for coating on rock particles is calculated.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1998年第3期335-341,共7页
CIESC Journal
关键词
磷酸生产
酸解动力学
湿法磷酸
生产
金河磷矿
phosphoric acid production,phosphate rock decomposition,kinetics of acidulation.
