摘要
某锌冶炼公司针对湿法系统所产浸出渣,采用回转窑法进行锌的再次回收。本文介绍国内某大型回转窑生产系统工艺原理、流程及浸出渣、焦粉的成分管控标准,进一步引申出回转窑窑尾温度、系统压力对生产的影响及控制要领,并深入讨论回转窑中后部结圈的形成原理、对生产的影响及化窑消除结圈操作方法。此外,分析了回转窑后续处理工序,即余热锅炉、电收尘及氧化锌脱硫工序的关键设备及工艺参数,指出生产中易出现的问题及解决办法,以期为锌冶炼行业的回转窑生产系统提供切实可行的设备、工艺、操作方面的经验。
A zinc smelting company uses a rotary kiln method to recover zinc from the leaching residue produced by the wet system.This paper introduced the process principle,process flow and composition control standards of leaching residue and coke powder in a large rotary kiln production system in China,and further extended the influence of rotary kiln tail temperature and system pressure on production and control essentials.The formation principle of the middle and rear coking of the rotary kiln,the influence on production and the operation method of eliminating the ringing of the chemical kiln were discussed in depth.In addition,the key equipment and process parameters of the subsequent treatment process of rotary kiln,namely waste heat boiler,electric dust collection and zinc oxide desulfurization process,were analyzed,and the problems and solutions that were easy to occur in production were pointed out,in order to provide practical equipment,process and operation experience for the rotary kiln production system of zinc smelting industry.
作者
李博文
陈鹏
林志富
张新振
LI Bowen;CHEN Peng;LIN Zhifu;ZHANG Xinzhen
出处
《绿色矿冶》
2023年第6期58-61,80,共5页
Sustainable Mining and Metallurgy
关键词
回转窑
锌回收
结圈
工艺设备
生产操作
rotary kiln
zinc recovery
cokings
process equipment
production operation
