硫酸钠直接转化制备六偏磷酸钠新方法探究  

A new method for preparing sodium hexametaphosphate by direct conversion of sodium sulfate

作　　者：潘春瑛 刘斌 王果 姚德秀 文灿 周骏宏[1] PAN Chunying;LIU Bin;WANG Guo;YAO Dexiu;WEN Can;ZHOU Junhong(Key Laboratory of Phosphorus Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000,China)

机构地区：[1]黔南民族师范学院磷化工重点实验室,贵州都匀558000

出　　处：《磷肥与复肥》2024年第2期17-19,共3页Phosphate & Compound Fertilizer

基　　金：贵州省科技计划项目(黔科合支撑[2021]一般307);中央引导地方科技发展资金项目(黔科中引地[2022]4019);贵州省服务“四新”“四化”科技攻关项目(黔教技[2022]007);贵州省“磷-硫-钛”资源综合利用工程研究中心项目(黔教技[2023]046)。

摘　　要：六偏磷酸钠是一种应用广泛的功能性磷酸盐,为降低生产成本,尝试采用硫酸钠与磷酸二氢铵为原料直接合成六偏磷酸钠。实验探究煅烧温度、煅烧时间和物料配比对反应的影响,结果表明六偏磷酸钠最佳制备工艺条件为煅烧温度500℃、煅烧时间0.5 h、m(磷酸二氢铵)/m(硫酸钠)1.62。该工艺具有流程短、成本低的优势,值得进一步研究。Sodium hexametaphosphate is a widely used functional phosphate.In order to reduce production costs,low-cost sodium sulfate and ammonium dihydrogen phosphate are used as raw materials to directly synthesize sodium hexametaphosphate.The effects of calcination temperature,calcination time and material ratio on the reaction are explored.The results show that the best preparation conditions of sodium hexametaphosphate are calcination temperature of 500℃,calcination time of 0.5 h,and the mass ratio of ammonium dihydrogen phosphate to sodium sulfate of 1.62.This new process has the advantages of short process and low cost,which is worth further research.

关 键 词：六偏磷酸钠 制备 磷酸二氢铵 硫酸钠 

分 类 号：TQ131.12[化学工程—无机化工]