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在实验室对冶金含铁尘泥在冶炼工序实现直接回收利用的热力学和动力学条件进行了研究,得出C-FeO反应的工况条件必须控制在温度大于950℃,金属化率随加热温度的升高和加热时间的延长而增加,并指出转炉是添加铁碳球的最佳位置。同时,开展转炉加铁碳球工业验证性试验,得出铁碳球对转炉终渣TFe含量没有显著影响,平均金属铁收得率约50%,加铁碳球的经济价值取决于废钢和铁水的价格差、铁碳球加入量及S含量3个主要因素。
In the laboratory, the thermodynamic and kinetic conditions for direct recovery and utilization of metallurgical iron-containing dust in the smelting process were studied. The working conditions of the C-FeO reaction must be controlled at a temperature higher than 950 ℃. The metallization rate varies with the heating temperature Increase and heating time increased, and pointed out that the converter is the best place to add iron carbon ball. At the same time, carrying out industrial verification test of converter and iron-carbon ball, it is concluded that iron-carbon ball has no significant effect on the TFe content of the converter final slag with an average metal iron yield of about 50%. The economic value of adding iron-carbon ball depends on scrap and hot metal The price difference, the amount of iron carbon balls and S content of the three major factors.