摘要
以水解偏钛酸和煅烧晶种为原料,在偏钛酸中加入不同比例的煅烧晶种,通过调整煅烧温度制备金红石含量98%~99%的钛白初品,考察煅烧晶种加量对煅烧温度的影响。然后通过XRD、SEM等手段对钛白粉的晶体结构、形貌、粒度分布和颜料性能进行分析。结果表明:随着煅烧晶种加量增加,金红石合格所需煅烧温度呈现下降趋势,煅烧晶种加量在4%~6%时对金红石合格所需煅烧温度影响不大。随着晶种加量的增加,初品平均粒径呈现下降趋势,离散系数呈现先下降后增加的趋势,当晶种加量达到6%,离散系数最小。随煅烧晶种加量的增加,铝系和锌系盐处理样品的蓝相(SCX)均随晶种加量的增加呈现增加趋势,消色力(TCS)均呈现先增加后降低的趋势,煅烧晶种加量在5%左右时,样品消色力达到最佳值。
Using hydrolyzed metatitanic acid and calcined seed crystals as raw materials, different proportions of calcined seed crystals were added to metatitanic acid, and the calcination temperature was adjusted to prepare the TiO_(2)product with a rutile content of 98% to 99%. The influence of the amount of calcined seed crystals on the calcining temperature was investigated. Then the crystal structure, morphology, particle size distribution and pigment properties of the TiO_(2)were analyzed by XRD, SEM and other means. The results show that as the content of calcined seed crystals increases, the calcination temperature required for qualified rutile shows a downward trend. When the amount of calcined seed crystals increases from 4% to6%, the required calcination temperature has little effect. As the amount of seed crystals increases, the average particle size of the TiO_(2)product shows a downward trend, and the dispersion coefficient shows a trend of first decreasing and then increasing. When the amount of seed crystals increases to 6%, the dispersion coefficient is the smallest. With the increase in the amount of calcined seed crystals, the SCX value of the aluminum-based and zinc-based salt treated samples showed an increasing trend with the increase in the amount of seed crystals, and the TCS value showed a trend of first increasing and then decreasing. When the amount of calcined seed crystals is about 5%, the TCS value of the sample reaches the best value.
作者
吴健春
路瑞芳
孙蔷
石瑞成
刘婵
Wu Jianchun;Lu Ruifang;Sun Qiang;Shi Ruicheng;Liu Chan(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co.,Ltd.,Panzhihua 617000,Sichuan,China;School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400030,China;School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China)
出处
《钢铁钒钛》
CAS
北大核心
2023年第1期10-14,共5页
Iron Steel Vanadium Titanium
基金
国家自然科学基金青年科学基金项目(编号:22108019)。
关键词
二氧化钛
煅烧晶种
粒度分布
离散系数
颜料性能
titanium dioxide
calcined seed crystal
particle size
dispersion coefficient
pigment performance
作者简介
吴健春,1978年出生,男,四川简阳人,高级工程师,主要从事硫酸法钛白及纳米二氧化钛的工艺开发及应用研究,E-mail:wujianchun@126.com;通讯作者:路瑞芳,高级工程师,E-mail:19982312680@163.com。
