高变质无烟煤伴生微晶石墨鉴定与分析

发布时间：2018-02-14 09:38

本文关键词： 微晶石墨无烟煤拉曼光谱分析浮沉　出处：《煤炭学报》2016年05期 　论文类型：期刊论文

【摘要】：为定性、定量表征内蒙古某高变质无烟煤伴生微晶石墨,以太西无烟煤、朝鲜无烟煤为对比样品,对试验样进行混酸脱灰处理和浮沉试验,分析了各试验样的X射线衍射和拉曼光谱特征。结果表明:不同采样点的脱灰无烟煤伴生微晶石墨的中部分试验样具有C(002)特征峰,但特征峰有宽化现象、强度有差异;不同试验样拉曼光谱D峰、G峰参数对比表明无烟煤伴生微晶石墨的热演化程度介于年老无烟煤至鳞片石墨阶段;以拉曼光谱分析无序碳含量表征无烟煤在无烟煤伴生微晶石墨中相对含量,并以该值为浮沉法分离浮物累积含量,该含量所对应浮沉分离密度即为脱灰无烟煤伴生微晶石墨中无烟煤与微晶石墨的分离密度,其值为1.665~1.681 g/cm~3。
[Abstract]:In order to qualitatively and quantitatively characterize the mixed acid deashing treatment and floatation test of a high metamorphic anthracite coals associated with microcrystalline stone ink, etherite anthracite and Korean anthracite as the contrast samples, a high metamorphic anthracite in Inner Mongolia was characterized. The X-ray diffraction and Raman spectrum characteristics of each sample were analyzed. The results showed that the middle part of the sample with fine grained anthracite from different sampling points had Cn002) characteristic peak, but the characteristic peak had the phenomenon of broadening and the intensity was different. The comparison of D-peak and G-peak parameters of Raman spectra of different samples shows that the thermal evolution of anthracite associated microcrystalline graphite is from aged anthracite to flake graphite. The relative content of anthracite in anthracite was characterized by Raman spectroscopy, and the accumulative content of floatation was determined by floatation method. The floatation density corresponding to this content is the separation density between anthracite and microcrystalline stone ink associated with descaling anthracite, with a value of 1.665v 1.681 g / cm ~ (-1).
【作者单位】：辽宁工程技术大学矿物加工与利用设计研究院;辽宁工程技术大学辽宁省矿物加工利用重点实验室;辽宁工程技术大学矿业学院;
【分类号】：TQ127.11

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