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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >Kinetics and Reduction Behavior of Self-reducing Briquettes Containing Blast Furnace Dust
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Kinetics and Reduction Behavior of Self-reducing Briquettes Containing Blast Furnace Dust

机译：高炉粉尘自还原团块的动力学及还原行为

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Kinetic studies of the blast furnace dust (BFD) reduction process have been carried out under non-isothermal conditions. BFD pellets were made with bentonite as the binder. A Comprehensive Thermal Analyzer (TG-DSC) was used to determine the mass loss of pellets, which were heated at three heating rates of 10, 20, 30 K/min up to 1493 K. Furthermore, the metallization rate and mineral composition of BFD pellets heated to several different temperatures were analyzed by chemical analysis and X-ray diffraction (XRD). It was found that, with its inherent carbon resources as the reducing agent, the metallization rate of BFD pellets could reach 88% at most. The reduction and weight loss process of iron oxides mainly happens above 1273 K. In addition, from application of the Coats-Redfern equation the apparent activation energy of the reduction from wustite to Fe was 443 kJ/mol and the mechanism was interface reaction R_2.
机译：高炉粉尘（BFD）还原过程的动力学研究已在非等温条件下进行。使用膨润土作为粘合剂制备BFD颗粒。使用综合热分析仪（TG-DSC）确定丸粒的质量损失，将丸粒以10、20、30 K / min的三种加热速率加热至1493K。此外，BFD的金属化速率和矿物成分通过化学分析和X射线衍射（XRD）分析加热到几个不同温度的颗粒。发现，以其固有的碳资源作为还原剂，BFD球团的金属化率最高可达88％。氧化铁的还原和失重过程主要发生在1273 K以上。此外，通过应用Coats-Redfern方程，从铁矾石还原为Fe的表观活化能为443 kJ / mol，其机理为界面反应R_2。

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