Assessing the quality of metallurgical coke by Raman spectroscopy
Assessing the quality of metallurgical coke by Raman spectroscopy
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DOI：
10.1016/j.coal.2014.05.005
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发表时间：
2014-08-15
影响因子：
5.6
通讯作者：
Luensdorf, Nils Keno
中科院分区：
文献类型：
--
作者：
Rantitsch, Gerd;Bhattacharyya, Anrin;Luensdorf, Nils Keno
冶金焦炭应耐机械、热和化学影响。这种电阻与有机组分的结构顺序有关。碳质物质的拉曼显微光谱（RSCM）被证明是一个很有前途的工具，以调查这一性质。通过对不同质量参数的焦块进行拉曼光谱分析，研究了焦块显微结构的变化。区分了三种基本类型的拉曼光谱。它们在大量样品中的优势大致预测了通过ISO标准化测试估计的焦炭质量。为了研究焦炭在高炉中的结构行为，几个样品已被处理下典型的气体气氛的高炉工艺（二氧化碳，氮气）在850摄氏度和1100摄氏度之间的温度为120分钟。RSCM数据测量的处理块证据的有序性差的有机微结构向更高的结构顺序的逐步转变。（C）2014 Elsevier B.V.保留所有权利。
Metallurgical coke should be resistant to mechanical, thermal, and chemical influences. This resistance is related to the structural order of the organic constituents. Raman microspectroscopy of carbonaceous matter (RSCM) is demonstrated as a promising tool to investigate this property. Variations of the microstructure among samples with different quality parameters are detected by analyzing the Raman spectra collected on their individual coke lumps. Three basic types of Raman spectra are discriminated. Their predominance in a bulk sample predicts roughly the coke quality, estimated by an ISO standardized test. To investigate the structural behavior of coke in a blast furnace, several samples have been treated under typical gas atmospheres of the blast furnace process (carbon dioxide, nitrogen) at temperatures between 850 degrees C and 1100 degrees C for 120 min. RSCM data measured on the treated lumps evidence a progressive transformation of poorly ordered organic microstructure towards a higher structural order. (C)2014 Elsevier B.V. All rights reserved.