烟气洗涤配套回转窑处理锌浮渣实践  

Practice of Zinc Dross Treatment with Offgas Washing Supporting Rotary Kiln

作　　者：王红吉 WANG Hong-ji

机构地区：[1]甘肃厂坝有色金属有限责任公司成州锌冶炼厂,甘肃陇南742508

出　　处：《有色冶金节能》2022年第5期55-59,共5页Energy Saving of Nonferrous Metallurgy

摘　　要：本文重点对烟气洗涤配套回转窑处理锌浮渣过程进行探究,分析回转窑在不同温度、窑转速条件下产出小窑焙砂的氯含量,得出窑尾温度400℃±10℃、窑转速13 Hz、反应时间3 h、窑头料面温度约850℃的最佳反应条件。在该条件下,小窑焙砂含氯量小于0.08%,锌浮渣脱氯效率达到97%。并分析该处理系统的压力降、温度差、氯分布及平衡,提出工艺操控的关键点。This paper focused on the process of zinc dross treatment with offgas washing supporting rotary kiln, analyzed the chlorine content of calcine produced by small kiln under different temperatures and kiln speeds, and obtained the optimal reaction conditions of kiln tail temperature of 400 ℃±10 ℃, kiln speed of 13 Hz, reaction time of 3 h, and kiln head charge level temperature of about 850 ℃, so that the chlorine content of calcine in small kiln is less than 0.08%, and the dechlorination efficiency of zinc dross reaches 97%. The pressure drop, temperature difference, chlorine distribution and balance were analyzed, and key points of process control were proposed.

关 键 词：锌浮渣 回转窑 脱氯 温度差 压力降 

分 类 号：TF813[冶金工程—有色金属冶金]