配碳比对热压含碳球团软熔滴落性能的影响

在碱度固定为1.20的条件下,系统研究了配碳比n(FC)/n(O)对热压含碳球团软熔滴落性能的影响,并进行了理论分析.研究表明,配碳比对软化区间、熔化区间、滴落率等软熔滴落性能参数有显著的影响.随着配碳比增加,软化区间t40～t4先变窄后加宽,在配碳比为1.00时最窄,降至348℃;熔化区间tD～tS也先变窄而后加宽,当配碳比为1.00时最窄,降至46℃;滴落率先增加后降低,在配碳比为1.08时滴落率最高,达到24.66%.从软熔滴落性能角度综合考虑,实际生产热压含碳球团时其配碳比宜定在1.00左右.

Effects of Carbon Ratio on Softening-Dripping Behavior of Carbon Composite Iron Ore Hot Briquette

Effects of carbon ratio(n(FC)/n(O))on the softening-dripping behavior of carbon composite iron ore hot briquette(CCB)were studied systemically and theoretically,with the basicity 1.20 unchanged.The results showed that the carbon ratio affects greatly the softeningdripping parameters,such as softening range,melting range and dripping ratio.With the increasing carbon ratio,the softening range t_(40)～t_4 tends to narrowing then widening,and becomes the narrowest(348℃)at the carbon ratio 1.00.The melting range t_D～t_S also tends to narrowing then widening,and becomes the narrowest(46℃)at the carbon ratio 1.00.The dripping ratio tends to increasing then decreasing,which comes up to its highest value(24.66%)at the carbon ratio 1.08.Taking account of the softening-dripping behavior comprehensively,the carbon ratio appropriate to actual production of CCB should be set around 1.00.