磷矿湿法制备磷酸及其提纯工艺研究  

Preparation of phosphoric acid by wet phosphate process and its purification

作　　者：胡震[1] 于海莲[1] 

机构地区：[1]四川理工学院精细化工助剂及表面活性剂四川省高校重点实验室,四川自贡643000

出　　处：《化工矿物与加工》2016年第1期8-9,14,共3页Industrial Minerals & Processing

基　　金：四川理工学院院级科研基金项目2009xjkpL002

摘　　要：本研究利用磷矿粉和硫酸为原料采用湿法制备磷酸,并对制备的粗磷酸进行提纯,系统地考察了硫酸浓度、反应温度、反应时间和搅拌强度4个工艺因素对磷酸产率的影响,得到了利用磷矿制备磷酸的工艺条件:硫酸浓度为2mol/L,反应温度为60℃,反应时间为1.5h,搅拌强度为3档。在此工艺条件下,磷酸的产率为49.3%,磷酸的纯度达到了78.5%。Phosphoric acid was prepared by the wet phosphate process with powdered phosphate rock and sulfuric acid and the prepared crude phosphoric acid was purified. The effects of con- centration of sulfuric acid, reaction temperature, reaction time and stirring intensity on the yield of phosphoric acid were re- viewed systematically. The optimum conditions of preparing phosphoric acid were concentration of sulfuric acid being 2 mol/ L, reaction temperature 60℃, reaction time 1.5 h and stirring intensity Grade 3. Under those conditions, the yield of phosphor- ic acid was 49. 3%and the purity of phosphoric acid reached 78.5%.

关 键 词：磷矿 湿法 磷酸 制备 产率 提纯 

分 类 号：TQ126.3[化学工程—无机化工]