摘要
回顾了中国热风炉用低蠕变Al2O3-SiO2系耐火材料研发的历程。通过对比矾土基低蠕变Al2O3-SiO2系耐火材料与莫来石基低蠕变Al2O3-SiO2系耐火材料的实际使用结果认为,要实现热风炉长寿命,对于热风炉用耐火材料而言,除了要求其具有优异的抗蠕变性能外,还应具有优良的抗热震性、抗CO和碱蒸气侵蚀等综合性能。针对中国资源综合利用的现状和可持续发展战略要求,建议使用红柱石或莫来石基原料制备Al2O3-SiO2系低蠕变系列耐火材料;即通过对原料进行分级,实现天然Al2O3-SiO2系原料(主要是红柱石)和人工合成Al2O3-SiO2系原料资源的综合利用,优化材料的矿物组成,制备以莫来石为主晶相结构,Al2O3质量分数低于75%的莫来石基低蠕变系列制品,并结合性价比进行优化配置,真正实现热风炉的长寿化,应该是今后长寿型热风炉用Al2O3-SiO2系耐火材料研发的重点。
The brief historical retrospect of R＆D of low creep Al2O3-SiO2refractories for hot blast stove in China was presented. The comparative results of actual performance of low creep bauxite-based Al2O3-SiO2 refracto- ries and low creep muliite-based Al2O3-SiO2 refractories showed that the refractories for hot blast stove should have good creep resistance,thermal shock resistance,resistance to CO and alkali vapor corrosion in order to achieve the long campaign of hot blast stove. Combining resource comprehensive utilization and sustainable development policy in China, low creep Al2O3-SiO2 refractories prepared with andalusite or mullite were recommended for hot blast stove. Both optimization material mineral structure and limitation Al2O3 less than 75% are good choice. Hot blast stove has its own maximum temperature during production operation,classified mullite-based Al2O3-SiO2 refractories used at different parts （dome and upper part being silica refractories） have high performance-price ratio for hot blast stove.
出处
《耐火材料》
CAS
北大核心
2008年第3期215-218,222,共5页
Refractories
作者简介
李勇：男，1964年生，博士，教授。E—mail：lirefractmy@rip．sina．com
