摘要
以锌泥为原料,采用二氧化碳法制备纳米级氧化锌,考察了锌泥乳化、碱锌合成、干燥煅烧等工艺过程,结果表明:在锌浆固液质量比为1/4,反应温度80℃,反应压力0.8MPa,搅拌速度1000r/min,碳化时间90min,煅烧温度400℃,煅烧时间120min条件下,得到的纳米级氧化锌产品粒径小于50nm,比表面积在50m2/g以上,应用该工艺建成了1套产能3000t/a的生产装置。
With zinc oxide mud as raw material, a novel preparation process of nano-zinc oxide by carbon dioxide technique is introduced. The main process is studied, which includes emulsifying of raw material, carbonizing reaction, preparation of the intermediate zinc hydroxyl carbonate, drying and calcining process. The result show that the product particle diameter of nano-zinc oxide is less than 50 nm, the main mass fraction is about 95% , and the specific surface area of the product is more than 50 m2/g, which is obtained under the optimum operating conditions：solid-liquid mass ratio of 1/4,reaction temperature of 80℃ ,reaction pressure of 0. 8 MPa,reaction time of 90 minutes, stirring speed of 1 000 r/min,calcining temperature of 400℃ and calcining time of 120 minutes. An industrial production unit has been built with production capacity of 3 000 t/a.
出处
《现代化工》
CAS
CSCD
北大核心
2010年第7期62-64,66,共4页
Modern Chemical Industry
关键词
纳米级氧化锌
锌泥
二氧化碳法
生产
nano-zinc oxide
zinc oxide mud
carbon dioxide technique
production
