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CO Reactivity of Manganese Lumps Versus Briquettes

机译：锰块的共同反应性与煤球

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摘要

In this work, a comparison between CO reactivity of lumps and briquettes made of two different binder and three different raw materials is presented. Experimental results on the prereduction behavior of such materials in 70% CO and 30% CO_2 atmosphere, heating rate of 0,17 K/s (10°C/min) at temperatures up to 1100°C are discussed. It was shown that briquettes presented higher CO reactivity, especially those whose molasses was the binder which had the highest reactivity. Level of oxygen also played an important role in CO reactivity. Comilog and Urucum with the highest oxygen level had highest reactivity while Ass-mang with the lowest oxygen level had the lowest reactivity between the raw materials. Porosity was a key variable to explain CO reactivity. Molasses briquettes had the highest porosity and the highest CO reactivity followed by bentonite briquettes and lumps.
机译：在这项工作中，提出了由两种不同的粘合剂和三种不同原料制成的块状和膨胀物的CO反应性的比较。对70％CO和30％CO_2大气中这种材料的预防行为的实验结果，讨论了高达1100°C的温度下0.17k / s（10℃/ min）的加热速率。结果表明，膨胀物呈现出更高的共同反应性，尤其是那些具有最高反应性的粘合剂的共同反应性。氧气水平也在CO反应性中发挥了重要作用。具有最高氧气水平的Comilog和尿布具有最高的反应性，而具有最低氧气水平的ASS-MANG在原料之间具有最低的反应性。孔隙度是解释共同反应性的关键变量。糖蜜聚块具有最高的孔隙率和最高的CO反应性，然后是膨润土压块和肿块。

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  • 来源
    《ISIJ international》 |2020年第10期|2129-2133|共5页
  • 作者

    Leandro Gustavo Mendes DE JESUS; Merete TANGSTAD;

  • 作者单位

    Federal Institute of Education Science and Technology of Mato Grosso do Sul Department of Metallurgy Corumba 79310-110 Brazil;

    Norwegian University of Science and Technology/Department of Materials Science and Engineering Trondheim 7034 Norway;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    manganese ore fines; pre-reduction; briquettes; CO reactivity;

    机译：锰矿罚款;预减少;煤气;CO反应性;

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