低温煤渣火山灰活性的机理研究

Study on volcanic ash reactivity of coal cinder at about 900 ℃

针对煤炭开采和燃烧过程产生的环境破坏和污染 ,以及水泥充填胶凝材料成本较高等问题 ,提出了低温 (约 90 0℃ )生成充填胶凝材料的新概念 ,并研究了低温煤渣火山灰活性的机理 .研究结果表明 :在温度 80 0～ 10 0 0℃条件下 ,低温和短的停留时间对煤渣活性有利 ;在流化床炉渣、粉煤灰和实验室电炉渣三者中 ,流化床炉渣活性最高 ,粉煤灰活性最低 .

Aiming at the problems of the damage and pollution of the environment produced by coal mining and combustion and the high cost problem of Portland cement used as backfill, a new concept of producing binder used as backfill is put forward and the mechanism of volcanic ash reactivity of coal cinder at about 900 ℃ is studied. The results show that low temperature and short retention period at 800～1 000 ℃ are beneficial to coal cinder reactivity; Among Fluidized Bed Furnace coal cinder(FBC) and fly ash and electric furnace coal cinder in laboratory(EFC), reactivity of FBC is highest, reactivity of fly ash is lowest .