金红石型钛白不同初品湿磨分散性能研究  

Research on wet gringding dispersion properties of different rutile TiO_(2)initial products

作　　者：杨芳 刘婵 路瑞芳[1] 石瑞成[1] Yang Fang;Liu Chan;Lu Ruifang;Shi Ruicheng(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co.,Ltd.,Panzhihua 617000,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

出　　处：《钢铁钒钛》2024年第4期29-33,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)。

摘　　要：以四种工业钛白粉辊压磨初品为原料,研究锌铝两系金红石钛白初品在不同打浆浓度条件下的湿磨分散性能,通过浆料粘度、分散稳定性、分散粒度及上清液电导率表征分散性能的差异。结果表明:同等硅酸钠分散工艺下,锌系初品分散性能均弱于铝系初品,且浆料粘度随打浆浓度升高而增大;各锌系初品的极限打浆浓度差异较大,硅酸钠加量为SiO_(2)/TiO_(2)质量比0.30%时,锌系初品B极限分散浓度可达500 g/L,但仍未达到铝系初品水平。低浓度状态下,各初品浆料中存在更多的小粒子,分散更加稳定,随着打浆浓度升高,浆料分散稳定性随之降低;粘度更低的浆料沉降比更高,即分散稳定性越差。各类初品表面电荷量各不相同,表面电荷更多的初品其粘度更低。In this work,four kinds of industrial TiO_(2)initial products were used as raw materials to study the wet gringding dispersion of Zn series TiO_(2)and Al series TiO_(2)at different concentrations.Then,the difference of dispersion properties was analyzed by the characterization of slurry viscosity,dispersion stability,particle size and supernatant conductivity.The results show that the dispersibility of Zn series products is weaker than that of Al series products under the same sodium silicate dispersion process,and the slurry viscosity increases with the increase of beating concentration.The limit beating concentration of each Zn series products is different.When Na_(2)SiO_(3)addition is 0.30%of the mass ratio of SiO_(2)/TiO_(2the)highest dispersion concentration of Zn series B can reach 500 g/L,but it still can not reach the leve of Al series products.At low concentrations below 300 g/L,there are more small particle size particles in each product,so the dispersion is more stable.With the increase of concentration,the dispersion stability of slurry decreases.The lower the viscosity of the slurry,the worse the dispersion stability.The amount of surface charge of all kinds of raw materials varies,and TiO_(2)with more surface charge has lower viscosity.

关 键 词：钛白粉 锌系 铝系 分散性能 硅酸钠 

分 类 号：TF823[冶金工程—有色金属冶金]