Abstract：To simplify the sintering process, a small scale fixed test bed for thermal sintering was built and the influence of ventilation volume on the contents variation of combustible rarefied gases (CO，H2 and CH4) was investigated. As a result, the CO and H2 content decreased with the augment of ventilation volume as a whole, and the variation trends of both content with ventilation volume and time were alike, which increased rapidly at first and turned to steady then dropped sharply; the relatively lower combustion ratio ［φCO/(φCO+φCO2)］ at a 100m3/(m2·min) ventilation volume indicated an enhanced efficient utilization of carbon chemical energy. Considering the increase of power consumption and air leakage with the increase of ventilation volume, the optimal ventilation volume in the experiment was 90m3/(m2·min). The CH4 content showed the same trend with various ventilation volume that it increased rapidly and maintained before dropped quickly when close to the burn-through point. The CH4 content reached to the max, approximately 2%, at the 70m3/(m2·min) ventilation volume. The experiment results could provide some reference for energy saving projects such as the choice of ventilation volume in sintering and the recycle of sintering flue gas.
冯祥，张忠孝，杨斌，史强. 风量对烧结烟气成分影响的实验研究[J]. 中国冶金, 2015, 25(04): 28-32.
FENG Xiang，ZHANG Zhong-xiao，YANG Bin，SHI Qiang. Experimental study of the ventilation volume’s influence on the composition of sintering flue gas. China Metallurgy, 2015, 25(04): 28-32.
2015, Vol. 25 
