摘要
电炉炼钢会产生大量的电炉粉尘,多数钢铁厂把粉尘仅简单处理后填埋,造成环境和资源的双重压力。然而电炉粉尘中的铁、锌元素含量较高,具有较高的回收利用价值。针对电炉粉尘中铁锌分离、回收金属锌的可行性进行了理论分析,进而试验研究了焙烧温度、焙烧时间、不同碳/氧比对铁锌分离的影响。结果表明,当碳/氧比为1.2,焙烧温度1100℃,还原时间10min,可以得到金属化率为84.95%的球团,并且收集到金属锌。
In the electric arc steelmaking process, about 10-20 kg dust per metric ton of steel （EAFD） were generated. Most of them were just thrown in a heap without any recycling. The feasibility of EAFD recycling was firstly analyzed, and then effecting factors such as the sintering temperature, holding time and C/O ratio on the Zinc re- claiming were investigated. It shows that Zinc ferrite could be reduced by carbon at 1 101 K. Under the optimal process parameters, namely, 1.2 of C/O ration, 1 100 K of sintering temperature and 10 min of holding time, metallic pellet with 84.95 % percent metallization could be produced and metallic zinc could also be extracted.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2010年第10期25-29,共5页
Journal of Iron and Steel Research
基金
国家科技支撑计划资助项目(2006BAE03A10)
973计划资助项目(2007C13613608)
关键词
电炉粉尘
球团
金属锌
回收利用
electric arc furnace dust（EAFD）
pellet
metallic zinc
recovery and utilization
