Production of High-strength Cokes from Non-/Slightly Caking Coals. Part I: Effects of Coal Pretreatment and Variables for Briquetting and Carbonization on Coke Properties
Production of High-strength Cokes from Non-/Slightly Caking Coals. Part I: Effects of Coal Pretreatment and Variables for Briquetting and Carbonization on Coke Properties
复制标题
用不粘煤/微粘煤生产高强度焦炭。
DOI：
10.2355/isijinternational.isijint-2018-819
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发表时间：
2019
影响因子：
1.8
通讯作者：
J. Hayashi
中科院分区：
文献类型：
--
作者：
M. Matoba;Shinji Kudo;Aska Mori;K. Norinaga;Kenya Uchida;Y. Dohi;K. Uebo;J. Hayashi
从非粘结性煤和轻微粘结性煤（换句话说，无粘结性煤）生产可用于高炉操作的焦炭的技术是可持续炼铁所需的。1）在环境温度下，2-5）300-350°C6）或300-500°C7）的无粘结剂煤成型的研究先前已报道。在这些研究之后，本作者8 -11）利用褐煤的热物理特性，提出了在高达200°C的温度下进行褐煤无粘结剂成型;一种由相对柔性的大分子网络的局部流动性引起的塑化。12 -14）热压块能够从维多利亚褐煤制备高度致密的压块。8）随后通过将团块加热至900°C进行碳化，将其转化为抗拉强度为20至40 MPa的焦炭。8）这种强度远大于用于高炉的强度，约5 MPa。15 -18）该工作之后是从水热处理的印度尼西亚褐煤制备焦炭的那些工作，9）从维多利亚褐煤制备焦炭从不粘结/轻微粘结的煤生产高强度焦炭。第一部分：煤的预处理和成型和炭化的变量对焦炭性质的影响
Technologies for producing coke available in blast furnace operation from nonand slightly caking coals, in other words, without caking coals, are desired for sustainable ironmaking.1) Studies on binderless coal briquetting at ambient temperature,2–5) 300–350°C6) or 300–500°C7) were reported previously. Following those studies, the present authors8–11) proposed binderless briquetting of lignite at temperature up to 200°C by taking advantage of its thermophysical behavior; a sort of plasticization that is arisen from local mobility of relatively flexible macromolecular network.12–14) The hot briquetting enabled to prepare highly densified briquettes from a Victorian lignite.8) Subsequent carbonization by heating the briquettes up to 900°C transformed them into cokes with tensile strength ranging from 20 to 40 MPa.8) Such strength was much greater than that favored for use in blast furnace, around 5 MPa.15–18) This work was followed by those on coke preparation from hydrothermally treated Indonesian lignites,9) coke preparation from Victorian ligProduction of High-strength Cokes from Non-/Slightly Caking Coals. Part I: Effects of Coal Pretreatment and Variables for Briquetting and Carbonization on Coke Properties