工程科学学报2018，Vol.40Issue(3)：349-356,8.DOI:10.13374/j.issn2095-9389.2018.03.011
COREX竖炉围管堵塞位置及其演变过程的物理模拟
Physical simulation of the position and evolution process of dust accumulation in the bustle pipe of a COREX shaft furnace
摘要
Abstract
A 3D semi-cylindrical physical model of COREX shaft furnace was established, and the initial position and evolution process of dust accumulation in the bustle pipe of a shaft furnace were investigated through this model. The effects of discharging rate, gas flow rate, and non-normal operation condition on dust accumulation in the bustle pipe were also studied. The results show that the initial position of dust accumulation in the bustle pipe is in the 8#-12# slot region, located before the supporting tube of AGD beam. The dust blockage is first formed in the packed bed near the slot and then blocks the slot and grows into the bustle pipe if the growth velocity of the blockage region is greater than the descending velocity. Finally, dust accumulation can be observed in the bustle pipe. The dust accumulation is still growing in the bustle pipe, and the edge of the dust pile could develop to the far side; thus, the other slots would be gradually clogged by dust. Moreover, the results confirm that with increased discharge and gas flow rates, dust accumulation in the bustle pipe is greatly hindered. In contrast, under non-normal operation conditions, the dynamic balance of dust blockage is broken, and dust accumulation in bustle pipe is easily formed.关键词
COREX竖炉/围管/粉尘堵塞/物理模拟/AGDKey words
COREX shaft furnace/bustle pipe/dust accumulation/physical simulation/areal gas distribution分类
矿业与冶金引用本文复制引用
周恒,吴胜利,寇明银,姚舜,游洋,罗志国,邹宗树..COREX竖炉围管堵塞位置及其演变过程的物理模拟[J].工程科学学报,2018,40(3):349-356,8.基金项目
中国博士后科学基金面上资助项目(2017M610769) （2017M610769）
中央高校基本科研业务费资助项目(FRF-TP-17-036A1) （FRF-TP-17-036A1）
