温度及盐处理剂对钛白粉生产过程中二氧化钛晶型转变影响的研究  

Effect of Temperature and Salt Treatment Agent on Crystal Transformation of Titanium Dioxide During Titanium Dioxide Production

作　　者：朱昌鸿 邰思雨 周骏宏 ZHU Changhong;TAI Siyu;ZHOU Junhong(School of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000,China)

机构地区：[1]黔南民族师范学院化学化工学院,贵州都匀558000

出　　处：《山东化工》2024年第20期22-25,30,共5页Shandong Chemical Industry

基　　金：贵州省科技计划项目(黔科中引地[2022]4019);贵州省科技计划项目(黔科合支撑[2022]一般030);贵阳市科技计划项目(筑科合同[2021]49-2号);贵州省教育厅服务“四新”“四化”科技攻关项目(黔教技[2022]007);黔南师院磷煤化工产学研实训一体化创新平台(2022xjg023)。

摘　　要：在工业上硫酸法生产钛白粉中,煅烧温度和盐处理两大工艺条件决定了钛白粉产品的质量。以贵州胜威公司半成品偏钛酸为研究对象,通过改变煅烧温度和加入不同盐处理剂,研究温度及盐处理剂对煅烧过程中二氧化钛晶型转变的影响,并采用XRD、白度分析等测试手段对煅烧产品进行测试,以找到适合金红石型钛白粉的生产条件。实验结果表明,在温度为850℃煅烧1 h时条件下,金红石晶型转化率最高;不同的盐处理对于产品的质量有不同的影响,磷元素会抑制金红石生成,但是却能有效提高产品的白度,锌元素可以降低锐钛型向金红石型的转化温度,钾盐可以提高钛白粉的分散度。Salt treatment and calcination temperature play a decisive role in the production of sulphuric acid titanium dioxide,and the quality of salt treatment directly affects the calcination,and the quality of calcination directly affects the whiteness and pigment properties of titanium dioxide products.Based on the actual production,the quality requirements of titanium dioxide were analyzed by different temperature gradients and different salts.It is found that when calcined at 850℃for 1h,rutile crystal conversion is high and whiteness meets production requirements.Different salt treatments have different effects on the quality of the product,phosphorus will inhibit the generation of rutile,but it can effectively improve the whiteness of the product,zinc can reduce the conversion temperature from anatase to rutile,potassium salt can improve the dispersion of titanium dioxide.

关 键 词：钛白粉 盐处理 煅烧 

分 类 号：TQ134.11[化学工程—无机化工]