不同流场状态对球形氢氧化镍生长粒度的影响  

The Influence of Different Flow Field Distribution on the Granularity of Spherical Nickel Hydroxide

作　　者：唐俊杰[1] 刘燕[1] 田磊[1] 张俊杰[1] 张廷安[1] 

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819

出　　处：《当代化工》2017年第10期1987-1990,共4页Contemporary Chemical Industry

基　　金：国家自然科学基金云南联合重点基金资助项目(U1402271;U1202274)

摘　　要：在相同的搅拌桨线速度、晶化时间、化学条件下,采用化学沉淀法分别应用八斜叶涡轮圆盘桨、推进式螺旋桨、Intermig桨分别制备球形氢氧化镍晶体。采用SEM技术考察各个样品的微观形貌,并结合PIV物理模拟技术分析不同桨型状态下反应器内的流场特性,研究表明:采用八斜叶涡轮圆盘桨是样品的球形度最佳,采用Intermig桨时样品的粒度d0.5最大。讨论了不同桨型对球形氢氧化镍晶体松装密度的影响。The spherical nickel hydroxide was synthesized by chemical precipitation method under the same stirring linear velocity, chemical conditions and aging time, which respectively used the eight- pitched blade turbine agitator, the propulsive propeller and the Intermig agitator. The morphologies of the spherical nickel hydroxide were characterized by SEM, and the flow field distribution in the reactor was simulated by PIV physical model technology. It was found that the sphericity of Ni（OH）2 crystal was best when using the eight-pitched blade turbine agitator, the particle sized0.5 was maximum when using the Intermig agitator. The influence of paddle types on the bulk density in the crystallization process of spherical nickel hydroxide was discussed.

关 键 词：球形氢氧化镍 桨型 流场分布 松装密度 

分 类 号：O614.813[理学—无机化学]