高温炉渣颗粒回转窑换热制取热风实验研究  

Experimental study on the production of hot blast using hot blast furnace slag as heat carrier in rotary kiln heat transfer

作　　者：李宗刚[1] 周扬民[1] 仪垂杰[1] 罗思义[1] 岳霞[1] 

机构地区：[1]青岛理工大学机械工程学院

出　　处：《冶金能源》2013年第4期33-35,共3页Energy For Metallurgical Industry

基　　金：国家自然科学基金重点项目(50934010)

摘　　要：针对液态高炉渣干法离心粒化后形成的液-固过渡态颗粒的粘附性特征,提出了一种利用高炉渣余热制取热风的新方法。研发了内壁附有螺旋叶片的回转窑换热装置,通过换热实验对影响换热风温度的关键参数(如高炉颗粒粒径、回转窑转速和倾角)进行了优化研究。结果表明:随炉渣粒径、回转窑转速和倾角的增大,热风温度呈现先增大后降低的趋势变化;当采用粒径在0.6～1mm范围内的炉渣颗粒作为热载体,回转窑转速为4.5r/min,倾角为2.5°时,热风温度达到最大值450℃。Based on the adhesion characteristics of liquid - solid transition state blast furnace particles produced by dry centrifugal granulation of liquid blast furnace slag, a new method of using the waste heat of blast furnace slag to produce hot air was presented. A rotary kiln heat - recovery device was de-signed. Through the heat transfer experiment of influence in the key parameters of hot air temperature, such as particle size of blast furnace, rotary speed and angle were optimized. The results show that the hot air temperature firstly increased and then decreased with increasing slag particle diameter. With the increases of rotating speed of rotary kiln and inclination, the variation of hot air temperature increased firstly and then decreased. When the BF slag particles with particle size being in the range of 0. 6 -1mm were taken as heat carrier, the rotating speed and inclination for rotary kiln being 4. 5r/min and 2. 5 degrees respectively, the temperature of hot air achieved the maximum, being 450℃.

关 键 词：高炉渣余热 回转窑 气固换热 热风 

分 类 号：X757[环境科学与工程—环境工程]