升温速率对金红石型二氧化钛颜料性能的影响研究  

Effects of Heating Rate on Pigment Properties of Rutile TiO2

作　　者：陈新红 王荣凯 李礼 Chen Xinhong;Wang Rongkai;Li Li(Pangang Group Chongqing Titanium Industry Co.,Ltd.,Chongqing 401323,China;College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]攀钢集团重庆钛业有限公司,重庆401323 [2]重庆大学化学化工学院,重庆400044

出　　处：《钢铁钒钛》2020年第2期20-23,28,共5页Iron Steel Vanadium Titanium

摘　　要：以工业偏钛酸为原料,经过漂白、洗涤、盐处理和煅烧制备金红石型二氧化钛,考查了煅烧过程升温速率对二氧化钛颗粒晶体结构和颜料性能的影响,并对样品进行XRD、SEM、激光粒度及颜料性能测试分析。结果表明:升温速率对二氧化钛颗粒的相转变、表面形貌、粒子大小及分布和颜料性能有显著影响,升温速率越快,有利于促进二氧化钛颗粒相转变和粒子成长,但易出现烧结,导致粒径过大且分布宽。适宜的升温速率为1.2℃/min,所得二氧化钛粒径为252 nm,分布最窄,球形度好,颜料性能最佳。Using industrial metatitanic acid as raw material,rutile TiO2 was prepared via bleaching,washing,salt treatment and calcination.The effects of heating rate on the crystal structure and pigment properties of titanium dioxide particles were investigated.The samples were characterized by XRD,SEM,laser particle size analysis and pigment properties test.The results show that the heating rate has a significant effect on the phase transition,surface morphology,particle size and distribution,and pigment properties of the titanium dioxide particles.A faster heating rate can promote the phase transition and particle growth of titanium dioxide,but it causes sintering and leads to a larger particle size and a wider size distribution.At the optimum heating rate of 1.2℃/min,titanium dioxide having a particle size of 252 nm with the narrowest particle size distribution,a better sphericity and the best pigment performances can be obtained.

关 键 词：二氧化钛 相转变 煅烧 升温速率 颜料性能 

分 类 号：TF823[冶金工程—有色金属冶金]