铜精炼阳极转炉氧化期烟气的传热特性

根据能量平衡原理,建立烟气对铜液的传热模型,并对不同空气过剩系数下的烟气平均温度和传热强度进行计算。结果表明:随着空气过剩系数的增大,烟气平均温度和传热强度均有明显下降。为增强烟气对铜液的传热能力,必须适当地减小空气过剩系数。此外,针对燃烧室排烟温度较高的问题,提出采用余热装置回收烟气余热的合理建议。

Heat Transfer Characteristics of Gas in Oxidation Period of Anode Rotary Furnace in Copper Refining

A model of heat transfer from smoke to liquid copper is established based on principle of energy balance. The average temperature and the intensity of heat transfer of smoke with different air surplus coefficients are calculated by using the model. The results show that both the average temperature and the intensity of heat transfer of smoke drop remarkably with the increase of air surplus coefficient. In order to enhance the capability of heat transfer from smoke to liquid copper, air surplus coefficient must be reduced properly. In addition, a reasonable proposal of recycling waste heat by waste heat devices is put forward aimed to the relative high temperature of waste gas.