论文部分内容阅读
钒渣钙化焙烧物料烧结,造成钒渣转浸率低,严重时将阻碍生产顺行。对钒渣钙化焙烧过程中物料烧结的原因及影响因素进行了研究。结果表明:当焙烧温度超过焙烧产物熔点时,低熔点物质由固相向液相转化,随着回转窑转动发生剧烈翻滚,形成直径较大的球状烧结料;焙烧温度和混合料中磁性物是影响物料烧结的主要因素;焙烧温度高于900℃,烧成带距离延长,低熔点物质拥有足够的时间形成较多的液相,发生烧结;混合料磁性物含量高,焙烧过程中氧化放热所升高的温度与焙烧温度发生叠加,局部温度可达1 000℃,使物料烧结严重。
Calcination of vanadium slag roasting material sintering, resulting in vanadium slag transfer rate is low, will hinder the production of serious. The reason and influential factors of material sintering during calcination of vanadium slag were studied. The results show that when the calcination temperature exceeds the melting point of the calcined product, the low-melting material is transformed from the solid phase to the liquid phase. As the rotary kiln rotates violently, the spherical calcined material with larger diameter is formed. The calcination temperature and the magnetic material in the mixture are The main factors affecting the sintering of the material; the calcination temperature is higher than 900 ℃, the sintering zone extends the distance, the low melting point material has enough time to form more liquid phase, sintering occurs; the mixture has high magnetic content, The increased temperature and calcination temperature superimposed, the local temperature up to 1 000 ℃, the material sintering serious.