摘要
湿法炼锌渣一般含有锌、银等有价金属,同时含铅、镉、砷等重金属,属于危险废物,需对其进行无害化处置,并回收锌、铅、银等金属。目前国内主要的锌渣处理技术有回转窑、烟化炉、顶吹炉工艺,虽然技术成熟,但在节能和环保方面还有较大提升空间。针对此问题,中国恩菲开发了侧吹浸没燃烧炉(SSC)+烟化炉(FF)处理锌浸出渣工艺,该工艺具有操作简单、能耗低、有价金属回收率高、环保好等特点。通过与既有技术相对比,其在工艺操作、金属回收率、燃料消耗、热能利用、尾气处理和环保方面均达到最优。该技术集危废处置和资源化利用为一体,将对危废处置领域产生重大影响。
Hydro-zinc smelting residue generally contains valuable metals such as zinc and silver,as well as heavy metals such as lead,cadmium,and arsenic.It is a hazardous waste and requires harmless disposal and recovery of metals such as zinc,lead,and silver.At present,the main domestic zinc slag treatment technologies include rotary kilns,fuming furnaces,and top-blowing furnaces.Although the technology is mature,there is still room for improvement in energy conservation and environmental protection.In response to this problem,ENFI has developed a side-submerged combustion furnace(SSC)+fuming furnace(FF)process for treating zinc leaching residue.This process has the advantages of simple operation,low energy consumption,high recovery rate of valuable metals,and good environmental protection.By comparing with existing technologies,it achieves the best in terms of process operation,metal recovery rate,fuel consumption,heat energy utilization,exhaust gas treatment and environmental protection.This technology integrates hazardous waste disposal and resource utilization,and will have a significant impact on the field of hazardous waste disposal.
作者
许良
马绍斌
XU Liang;MA Shao-bin
出处
《中国有色冶金》
CAS
北大核心
2021年第2期40-44,共5页
China Nonferrous Metallurgy
关键词
锌浸出渣
危险废物
侧吹浸没燃烧炉+烟化炉工艺
金属回收率
热能利用
燃料消耗
尾气
环保
zinc leaching residue
hazardous waste
side-submerged combustion furnace(SSC)+fuming furnace(FF)process
metal recovery rate
heat energy utilization
fuel consumption
exhaust gas
environmental protection
