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首页> 外文期刊>ISIJ international >Improvement in blast furnace reaction efficiency through the use of highly reactive calcium rich coke
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Improvement in blast furnace reaction efficiency through the use of highly reactive calcium rich coke

机译：通过使用高反应性的富钙焦提高高炉反应效率

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摘要

A method to produce coke in 'lump' form with high strength and reactivity through the addition of a catalyst was investigated in order to improve blast furnace reaction efficiency. The addition of Ca compounds to coal before carbonization was found to considerably increase the reactivity of the coke at a low temperature range in the thermal reserve zone of a blast furnace. Furthermore it was proved that strong, highly reactive 'lump' form coke could be produced by adding a Ca-rich non-caking coal and adjusting the coal blend composition. Based on this fundamental study, the Ca-rich coke was successfully produced in coke ovens on a commercial scale, both at Kimitsu and Muroran works. The use of the Ca-rich coke in the Muroran No. 2 blast furnace was found to cause a decrease in the reducing agent rate by 10 kg/t-p. This technology, producing coke of high reactivity and strength through catalyst addition, is promising as a means of improving the reaction efficiency of a blast furnace.
机译：为了提高高炉反应效率，研究了通过添加催化剂来制备具有高强度和反应性的“块状”焦炭的方法。发现在碳化之前向​​煤中添加Ca化合物可显着提高焦炭在高炉热储备区中低温范围内的反应性。此外，事实证明，通过添加富含钙的非结块煤并调节煤掺合物的组成，可以生产出高强度，高反应性的“块状”焦炭。根据这项基础研究，在Kimitsu和Muroran工厂成功地在商业规模的焦炉中成功生产了富含钙的焦炭。发现在室兰2号高炉中使用富含钙的焦炭会导致还原剂速率降低10 kg / t-p。该技术通过添加催化剂产生高反应性和强度的焦炭，有望作为提高高炉反应效率的手段。

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