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首页> 外文期刊>ISIJ international >Blast Furnace Operation with 100% Extruded Briquettes Charge
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Blast Furnace Operation with 100% Extruded Briquettes Charge

机译：高炉操作，可100％挤出型煤

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摘要

Industrial stiff vacuum extrusion briquettes (BREX) producing line can efficiently provide for the small-scale blast furnace (BF) operation with 100% briquetted charge. Physical and metallurgical properties of the BREX are being investigated. A new effect of the non-linear strengthening of the BREX bonded with the combined Portland cement and Bentonite binder is described. Application of this combined binder results in the local maximum of the cold compressive strength of the BREX on third day of strengthening. Hot strength mechanism of the BREX is explained and was found to be related with creation of the metallized shell on their surface, sintering of the iron-containing particles and further creation of the metallicc phase surrounded by the silicates and ferrites. The addition of the iron ore fines to the BREX composition can improve their sintering during reduction thus helping to keep the integrity of the agglomerates. Results of the industrial operation of the small-scale BF with BREX are analyzed. The consumption of coke in the BF at 100% of BREX does not exceed 500 kg/t compared with 680 kg/t for the smelting without BREX.
机译：工业硬质真空挤出型煤（BREX）生产线可以高效地为小型高炉（BF）操作提供100％的型煤。正在研究BREX的物理和冶金性能。描述了用波特兰水泥和膨润土结合剂对BREX进行非线性强化的新效果。在加固的第三天，使用这种结合的粘合剂会导致BREX的冷抗压强度达到局部最大值。解释了BREX的热强度机理，发现其与表面金属化壳的产生，含铁颗粒的烧结以及被硅酸盐和铁素体包围的金属相的产生有关。将铁矿粉添加到BREX组合物中可以改善还原过程中的烧结，因此有助于保持团聚体的完整性。分析了带有BREX的小型高炉的工业运行结果。高炉中焦炭的消耗量不超过BREX的680公斤/吨，而BREX为100％。

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