利用合成沸石副产稀碱液制五水偏硅酸钠  

Preparation of Sodium Metasilicate Pentahydrate from Dilute Lye Generated in Synthetic Zeolite Production

作　　者：余丽秀 孙亚光 

机构地区：[1]国家非金属矿资源综合利用工程技术研究中心,河南郑州450006

出　　处：《化工环保》2000年第4期40-42,共3页Environmental Protection of Chemical Industry

摘　　要：合成沸石原粉副产稀碱液经除杂后 ,用泡花碱调整 Si O2 浓度 ,再经浓缩、结晶、分离、干燥等过程制备五水偏硅酸钠 ,产品质量符合标准 ,生产成本较通常方法可降低 2 5%。采用本法还可解决稀碱液对环境的污染 ,具有较好的环境、经济和社会效益。Sodium metasilicate pentahydrate is prepared from dilute lye generated in zeolite production through removing impurity by precipitation,adjusting SiO 2 content by adding water glass,and then via the processes of concentration,crystallization,separation and drying.The product quality can meet the standard and the production cost decreases by 25% compared with that of the conventional process.The new process not only eliminates dilute lye pollution,but also realizes good economic and social benefits.

关 键 词：沸石 稀碱液 偏硅酸钠 副产 废水处理 洗涤剂 

分 类 号：X781.03[环境科学与工程—环境工程] TQ649.4[化学工程—精细化工]