云南高钛渣流态化氯化冷态模型数值模拟  

Numerical Simulation for Fluidized Chlorination Cold Model of High-titanium Slag in Yunnan

作　　者：朱奎松 刘松利[1] 芶淑云 王梁[2] Zhu Kuisong Liu Songli Gou Shuyun Wang Liang(College of Resources and Environmental Engineering, Panzhihua University, Panzhihua 617000, Sichuan, China School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093,Yunnan, China)

机构地区：[1]攀枝花学院资源与环境工程学院,四川攀枝花617000 [2]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《钢铁钒钛》2017年第2期30-36,共7页Iron Steel Vanadium Titanium

基　　金：攀枝花市创新人才培养项目(2014TX-12);攀枝花市社会科技发展项目(2014CY-S-6);攀枝花学院校级一般项目(2015BY 34)

摘　　要：基于欧拉-双流体模型和流态化氯化临界流化速度经验公式,结合云南高钛渣物性参数,研究了其流态化氯化的初始流化速度下高钛渣流态化氯化特性、气泡运动对床层的扰动、气泡大小与分布板位置关系。研究结果表明:Grace方程能准确预测B类颗粒窄粒径的高钛渣流态化氯化气泡行为,Wen-Yu方程预测的初始流化速度下乳相和气泡出现时间延后;完全流化速度下,通过上升、合并长大、破裂过程,在分布板位置形成气泡;通过钛渣固体矢量图得出,整个床层以气泡为分界,气泡上升对上、下部颗粒的流动产生影响,导致床层不均匀。The hydrodynamic characters, disturbance of bubble motion to bed and relationship between bubble size and distributed plate position under the initial fluidization velocity in fluidized chlorination of high-titanium slag in Yunnan was studied based on the Euler Two-fluid Model and Critical Fluidization Velocity Empirical Formula for fluidized chlorination, combining with the physical parameters of Yunnan high-titanium slag. The results show that the Grace Correlation can precisely predict the bubble behaviors in fluidized chlorination of the high-titanium slag with narrow size distribution of B-type particles, and the appearance of emulsion phase and bubbles predicted by Wen-Yu Correlation under initial fluidizing veloc- ity is postponed. The bubbles are formed at the distributed plate positions through three stages of rise, consolidation and burst under full fluidizing velocity. The solid-vector diagram of the high titanium slag in- dicates that the whole bed is demarcated by the bubbles and the bubble rising process affects the fluid- ization of upper and lower particles which results in unevenness of the entire bed.

关 键 词：四氯化钛 高钛渣 氯化 流化床 数值模拟 流动特性 

分 类 号：TF823[冶金工程—有色金属冶金] TF552