鞍钢石灰回转窑耐火材料长寿与节能材料的应用

基于冶金石灰回转窑传统耐火材料砌筑方法，针对鲅鱼圈冶金石灰回转窑煅烧带耐火材料使用寿命短及隔热效果差导致窑皮温度过高的问题进行研究。通过改变耐火材料材质及砌筑方式，使该部位耐火材料使用寿命由8~10个月延长到18~24个月；通过使用NJS纳米级微孔隔热毡使窑皮温度在同等工况条件下降低46℃，每年因此降低能源费用195万元。实践证明，通过耐火材料砌筑优化后回转窑耐火材料故障率及能耗水平均得到显著降低，取得较好经济效益和社会效益。

Longevity of refractory material for lime rotary kiln and application of energy- saving material in Ansteel

On the basis of the analysis of the masonry method of conventional refractory material in rotary kiln, the problems of the short service life of the refractory material for the calcining belt in the rotary kiln and the high temperature of kiln crust caused by the poor insulation effect were investigated. The service life of refractory materials was extended from 8- 10 months to 18- 24 months by changing the material quality and the way of masonry. Using the NJS nanometer level microporous heat insulating material, the surface temperature of rotary kiln was decreased by 46℃, thus reducing the cost for energy by 1.95 million yuan every year. Practice showed that the material failure rate and the energy consumption levels for rotary kiln were reduced significantly through the optimization of kiln refractory and masonry method, therefore the good economic and social benefits were achieved.