碳铵两步法制取氟铝酸钠的试验研究  

Study of Experiments on Preparation of Sodium Fluoroaluminate by Two-Step System with Ammonium Hydrocarbonate

作　　者：王贺云[1] 刘晓红[1] 刘晓萍[2] 

机构地区：[1]南昌大学环境科学与工程学院,江西南昌330029 [2]南昌大学医学院,江西南昌330046

出　　处：《南昌大学学报（工科版）》2006年第3期213-215,222,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省教委2003年科技计划项目(Z02291)

摘　　要：碳酸氢铵与氟硅酸反应,生成二氧化硅沉淀和氟化铵溶液;将氟化铵溶液与硫酸钠和硫酸铝反应制得符合GB/T4291-1999一级品的氟铝酸钠.通过正交试验,得到了两步反应的较佳反应条件,氟铝酸钠收率大于90%;副产品白炭黑符合国标要求且收率达95%以上;还考察了氟铝酸钠的结晶行为.这一研究有助于保护氟资源,防止氟污染.Ammonium hydrocarbonate is reacted with fluosilic acid, and obtained the silicon dioxide precipitation and the ammonium fluoride solution. Fluorine ammonia solution can be used to react with sulphuric acid sodium and aluminium sulfate and produce sodium fluoroaluminate, which can first class product according to GB/T4291 - 1999. Through the orthogonal experiment, the best reactive conditions are obtained in the two - step systerm, the yield of sodium fluoroaluminate is bigger than 90%, by - product - the silicon dioxide is measured up to the national standard and the yield can be beyond 95%. The article has also conducted the crystalline behavior of sodium fluoroaluminate. The research facilitates protecting fluorine resources, and prevents fluorine from pollution.

关 键 词：氟铝酸钠 碳铵 两步法 制备 研究 

分 类 号：TQ805[化学工程]