降低大型挥发窑煤焦消耗的生产实践

Production Practice of Reducing Coal Coke Consumption in Large Volatile Kilns

对某新建锌项目生产基地2台大型挥发窑(Ф4500 mm×68000 mm)生产运行成本的影响因素进行了分析,结合生产实践从原料、配料、稳定运行等方面提出了管控煤焦质量、降低浸出渣水分、精细司窑操作、优化燃料使用等改进措施。实践证明,改进措施降低了挥发窑的运行成本,提高了浸出渣中有价金属的回收利用,为系统的降本增效、稳定运行提供了保障。

This paper analyzes the factors affecting the production and operating cost of two large volatile kilns(Ф4500 mm×68000mm)in a newly built zinc project production base.According to the production practice,some improvement measures were proposed to control coal coke quality,reduce water content in leaching residue,refine kiln operation,and optimize the use of fuels from the perspectives of raw materials,blending,and stable operation.It has been proved that the improvement measures have reduced the operating cost of the volatile kiln,increased the recovery and utilization of valuable metals in the leaching residue,and provided a guarantee for the system's cost reduction,efficiency improvement,and stable operation.