焦炭与废塑料共混对电炉炼钢渣中FeO还原作用的探究  

Reduction of FeO in EAF Steel Making Slag by Metallurgical Coke and Waste Plastics Blends

作　　者：杨祝英 左欢 李敬 YANG Zhu-ying;ZUO Huan;LI Jing(Tianjin Institute of Technology,Tianjin 300403,China)

机构地区：[1]天津工业职业学院,天津300403

出　　处：《塑料科技》2020年第3期61-66,共6页Plastics Science and Technology

摘　　要：实验研究了冶金焦与高密度聚乙烯(HDPE)塑料共混物1 550℃对电炉炉渣(47%FeO)的还原作用。实验在卧式管式炉中进行,并与使用红外气体分析仪和多重气相色谱分析仪的烟气分析相结合。结果表明,与纯焦炭相比,焦炭/塑料共混物对炉渣的FeO还原速率明显提高,最大还原速率是纯焦炭的两倍以上。随着共混物中HDPE含量的增加,废气中的CO2含量降低了75%。此外,当使用焦炭与塑料共混物作为还原剂,金属的渗碳程度和硫去除率有了显著提高。高温下废塑料析氢反应提高了还原、渗碳和脱硫的速率。The reduction of slag(47% FeO) by mixing metallurgical coke with high density polyethylene(HDPE)plastics at 1 550℃ was studied. The experiments were carried out in a horizontal tube furnace on a laboratory scale and combined with the analysis of flue gas using infrared gas analyzers and multiple gas chromatographic analyzers. The results showed that compared with pure coke, the FeO reduction rate of coke/plastic blend was significantly increased, and the maximum reduction rate was more than twice that of pure coke. As the polymer content in the blend increased, the CO2 content in the exhaust gas decreased by 75%. In addition, when coke was mixed with plastic, the carburizing degree of metal and sulfur removal rate were significantly improved. The observed improvements in reduction, carburization, and desulfurization rates are due to the reaction of hydrogen from waste plastics at high temperatures.

关 键 词：FeO还原 冶金焦炭 废塑料 碳化 脱硫 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]