摘要
在氮气气氛和１１００～１３００℃温度范围内，对含锌铅粉尘配碳球团中的铅挥发动力学的研究表明：还原温度对铅挥发速率有显著影响，而煤粉粒度及过量碳含量对铅挥发速度则没有影响。求得铅挥发表观活化能为８８．７４ｋＪ／ｍｏｌ，并确定铅的挥发限制性环节为铅的蒸发和铅通过其表面气相边界层的扩散。
The study on the evaporation kinetics of lead in carbon containing pellets made of Zn Pb bearing dusts, in an nitrogen atmosphere and between 1 100 ℃ and 1 300 ℃, showed that the reduction temperature has significant effects on evaporation rate of lead and that the particle size of coal powder and the extra carbon content have not effects on the evaporation rates. The activation energy 88.74 kJ/mol was calculated for lead evaporation. The rate of lead evaporation is controlled by the lead volatilization reaction and the diffusion of gaseous lead through gas boundary on surface of the liquid lead.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1997年第4期38-41,共4页
The Chinese Journal of Nonferrous Metals
关键词
锌铅粉尘
配碳球团
挥发动力学
Zn Pb bearing dusts carbon containing pellets evaporation kinetics
