六偏磷酸钠的应用及制备技术  

Application and production technologies of sodium hexametaphosphate

作　　者：陈华东[1] 曾波[2] 戴元华[1] 宋同彬[1] 

机构地区：[1]昆明理工大学化工学院,云南昆明650224 [2]云南省化工研究院

出　　处：《无机盐工业》2010年第2期9-11,共3页Inorganic Chemicals Industry

摘　　要：磷酸钠盐是工业磷酸盐中产量最大、消费量最多的磷化工产品,其技术开发与市场发展都比较成熟,主要有正磷酸钠盐、焦磷酸钠盐、聚磷酸钠盐和偏磷酸钠盐。六偏磷酸钠是一种使用广泛的功能性磷酸盐,可应用于洗涤、水处理、食品、选矿、冶金等工业生产中。综述了六偏磷酸钠的应用领域,并详细介绍了六偏磷酸钠的制备方法以及各种方法的优缺点,主要有磷酸二氢钠两步法和五氧化二磷一步法。提出了六偏磷酸钠生产工艺的发展趋势。Sodium phosphate salts, which mainly include sodium orthophosphate, sodium pyrophosphate, sodium polyphosphate,and sodium metaphosphate, are the largest produced and consumed phosphate products in industrial phosphates. Their technical exploitation and market development are both relatively mature. Sodium hexametaphosphate is a functional phosphate which can be widely used in industrial productions, such as washing, water treatment, food, mineral concentration and metallurgy. Application fields of sodium hexametaphosphate was summarized. Production technologies, mainly include two-step sodium dihydrogen phosphate production process and one-step phosphorus pentoxide production process of sodium hexametaphosphate,as well as advantages and disadvantages of various methods were introduced in detail. Production technology development tendency of sodium hexametaphosphate was put forward.

关 键 词：六偏磷酸钠 偏磷酸盐 聚磷酸钠盐 

分 类 号：TQ131.12[化学工程—无机化工]