Study on the Volatilization Process of Lead Silver Slag Treated by Pyrometallurgical Method
Taking lead silver slag from a smelting plant as experimental samples,pyrometallurgy was used to study the effects of different carbon contents and temperatures on the volatilization process of lead silver slag.At temperatures of 1 200 ℃ and 1 300 ℃,fine lead silver slag particles and CaO were selected,and different masses of coal powder were added,and characterized by XRD,scanning electron microscopy,and other methods.The results showed that the optimal process conditions were w(C)=60％,temperature 1 300 ℃,and reaction time 1 h,and the volatilization efficiency of zinc was the best,with a volatilization rate of 91.2％.
lead silver slagfire treatmentvolatilizationcomprehensive recycling
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