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首页> 外文期刊>Ironmaking & Steelmaking >Utilisation of semi-coke as by-product derived from coal-based direct reduction process in iron ore sintering
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Utilisation of semi-coke as by-product derived from coal-based direct reduction process in iron ore sintering

机译：利用半焦炭作为副产品衍生自用于铁矿石烧结中的煤基直接减少过程

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摘要

Solid wastes derived from metallurgical industries have created threats to the environment and their disposal is a major concern for the World. Semi-coke generated in the coal-based direct reduction process of iron ore is a solid waste and its effective utilisation has not been developed so far. In order to develop it properly, the characteristics of this semi-coke have been comprehensively studied and an investigation was carried out into the use of semi-coke as an alternative fuel in iron ore sintering. It is shown that the semi-coke could be substituted for coke breeze without affecting the sintering and metallurgical performances by adjusting its size distribution to offset the adverse effect of its superior combustion properties. In addition, the application of semi-coke in sintering could decrease SOx and NOx pollutants by 66 and 25%, respectively, in waste gas compared with coke breeze as solid fuel.
机译：源自冶金工业的固体废物已经为环境创造了威胁，他们的处置是世界的主要关注点。 在铁矿石的煤基直接减少过程中产生的半焦是固体废物，其有效利用尚未开发到目前为止。 为了适当地发展，已经综合研究了该半焦的特性，并在使用半焦炭作为铁矿石烧结中的替代燃料中进行了调查。 结果表明，通过调节其尺寸分布以抵消其优异的燃烧性能的不利影响，可以代替焦微量的焦炭微肿块而不影响烧结和冶金性能。 此外，与可乐微风相比，半焦炭在烧结中，分别将SOx和NOx污染物减少66％和25％，与焦炭微风为固体燃料。

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