进料管通风对涡流分级机分级效果的影响  

Effect of Feeding Pipe Ventilation on Particles Classification of Turbo Classifier

作　　者：郭丽杰[1] 王京刚[1] 刘家祥[2] 段铁柱[2] 

机构地区：[1]北京化工大学化学工程学院 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《非金属矿》2006年第1期49-51,共3页Non-Metallic Mines

基　　金：国家自然科学基金资助项目(项目批准号:50474035;50374004)

摘　　要：为了研究物料预分散后对分级效果的影响,在涡流分级机进料管上端增设了通风管,由鼓风机提供风源。以滑石粉为原料,在不同预分散风速、系统进口风速、转笼转速和固体浓度条件下进行了分级对比实验。结果表明:在实验范围的各种工况下,当预分散风速为4.91m/s时,分级效果最佳。分级精度、小于30μm的牛顿分级效率都有明显提高,且提高幅度与系统进口风速、转笼转速和固体浓度大小有关。A ventilating duct was installed on the top of feeding pipe in turbo classifier and air flow was provided by a blower. In order to investigate the effect of material after pre-dispersion on particles classification, the contrast experiments for classification of talc powder were made under different pre-dispersion air flow rate. system inlet air flow rate, rotational speed of rotor cage and solid loading conditions. The results of experiments show that particles classification is best when value of pre-dispersion air flow rate is approximately 4.91 m/s under the same process conditions. The classification precision and below 301μm Newton classification efficiency after being added blower notably is increased in all of the experiments and the amplitude of improvement is relate to system inlet air flow rate. rotational speed of rotor cage and solid loading when value of pre-dispersion air flow rat, is approximately 4.91 m/s.

关 键 词：涡流分级机 预分散 分级精度 分级效率 

分 类 号：TQ051.899[化学工程] TQ051.84