An enterprise adopts vacuum distillation replacement process to treat 100,000 tons of lead-zinc materials annual-ly.The process mainly uses mixed slag and low-grade lead-zinc ore as raw materials and coke as reducing agent to produce metal zinc and lead alloys through raw material drying,mixing,pressing,vacuum reduction distillation,condensation,refi-ning and other processes.The annual comprehensive energy consumption is 14 721.53 tce,and the unit energy consumption of zinc ingot products is 736.08 kgce/t,which has reached the domestic advanced level and has obvious advantages of ener-gy conservation and environmental protection.
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