锌系和铝系钛白初品的分散性能对比研究  

Comparative study of dispersion performance of the zinc and aluminum salt treated rutile titanium dioxides

作　　者：刘婵 殷鸿尧 杨芳 路瑞芳[1] Liu Chan;Yin Hongyao;Yang Fang;Lu Ruifang(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co.,Ltd.,Panzhihua 617000,Sichuan,China;Ploymer Research Institute,Sichuan University,State Key Laboratory of Ploymer Materials Engineering,Chengdu 610065,Sichuan,China)

机构地区：[1]钒钛资源综合利用国家重点实验室,攀钢集团研究院有限公司,四川攀枝花617000 [2]四川大学高分子研究所,高分子材料工程国家重点实验室,四川成都610065

出　　处：《钢铁钒钛》2024年第3期39-45,共7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)。

摘　　要：选取某硫酸法钛白厂生产的锌系和铝系盐处理金红石初品作为试验原料,系统研究TiO_(2)浓度、分散体系pH和表面吸附的化学成分等因素的变化对锌、铝两系初品悬浊液zeta电位的影响规律,对比分析了锌系和铝系初品分散稳定性的差异。结果表明,随着稀释浓度增高,铝系初品分散越来越稳定,而锌系则逐渐失稳;分散液pH从4.0升至10.0,铝系初品zeta电位较锌系更为显著,即铝系初品更易分散稳定;初品表面脱硫和脱羟基后,铝、锌两系初品的zeta电位随pH的变化规律没有改变,证明了表面吸附的化学成分并非构成两系初品分散差异性的原因。通过实验室单一盐处理-煅烧试验,进一步证明了Zn^(2+)和Al^(3+)掺杂是导致初品分散稳定性差异的根本原因,煅烧温度对初品表面电荷的变化有显著影响,对铝系初品的影响更显著。In this paper,the effects of TiO_(2) concentration,pH of the dispersion system and surface adsorbed chemical ingredients on the zeta potential of the zinc and aluminum salt treated rutile titanium dioxides produced by the manufacturer were systematically studied.The differences of the dispersion stability of the zinc and aluminum salt treated rutile titanium dioxides were compared and analyzed.The results show that with the increase of dilution concentration,the dispersion of aluminum series becomes more and more stable,while that of zinc series becomes unstable.The pH of the dispersion solution increased from 4.0 to 10.0,and the zeta potential of the aluminum series primary product was more significant than that of the zinc series primary product,that is,the aluminum primary product was more easily dispersed and stable.After surface desulphurization and dehydroxylation of primary products,the variation of zeta potential of aluminum and zinc series primary products with pH did not change,which proved that the surface adsorbed chemical ingredients were not the fundamental influencing factors of differences of dispersion of the two series primary products.It was further proved that Zn^(2+)or Al^(3+)doping was the root cause of the difference of dispersion stability of the two series primary products through the single salt treatment and calcination test in the laboratory.Moreover,the calcination temperature had a significant effect on the surface charge of the primary products,and the effect on the aluminum series primary product was more significant.

关 键 词：钛白初品 锌系盐处理 铝系盐处理 分散性能 ZETA电位 

分 类 号：TF823[冶金工程—有色金属冶金] TB34[一般工业技术—材料科学与工程]