钨矿强化碱煮搅拌釜的放大设计研究  

Scale-up Design of Mechanical Activation Alkali Boiling Reactor for Tungsten Ore

作　　者：刘飞飞[1] 王兵[1] 林飞[1] 罗穆峰 

机构地区：[1]江西理工大学,江西赣州341000

出　　处：《有色金属（冶炼部分）》2015年第7期50-54,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(61364014)

摘　　要：以钨矿机械活化碱煮搅拌釜试验模型为对象,建立了几何相似放大的搅拌釜模型,并基于Fluent软件对模型进行模拟分析。结果表明,放大的搅拌釜在顶部两端区域易形成流动死区,不利于固液混合。优化该放大模型的搅拌釜结构和搅拌桨安装方式后能避免产生流动死区。改变搅拌釜模型的容积和搅拌桨转速,对比分析优化前后搅拌釜内流体的混合特性和搅拌功率,建立了混合特性评价体系,同等条件下,优化后的搅拌釜能缩短混合时间,提高混合效率。Based on model of mechanical activation alkali boiling reactor for tungsten ore,the reactor model was established by adopting geometric similarity amplification method and analyzed by numerical simulation with Fluent software.The results show that amplified model tends to produce flow ＂dead zones＂on both sides at the top of reactor,which is not conducive to solid-liquid mixture.Flow ＂dead zones＂disappears following optimization of reactor＇s structure and impeller installation.The mixing characteristics evaluation system was established with adjustment of stirring speed and volume of reactor,and comparative analysis on mixing characteristic of fluid and stirring power of reactor.The results show that optimized reactor can shorten mixing time and improve mixing efficiency.

关 键 词：钨矿 机械活化 设计 反应釜 放大 数值模拟 

分 类 号：TF841.1[冶金工程—有色金属冶金] TF803.2