Abstract

The mineral composition of coal from the Mezhegeyskaya mine (specifically, concentrate fractions of the machine classes >13.0, 0.5–13.0, and <0.5 mm) is investigated. The distribution of mineral components in these concentrate fractions of different density is studied. The best ash composition in Mezhegeyskaya coal corresponds to a density of <1.27 t/m³ in size classes 0.5–13.0 and especially <0.5 mm. More detailed petrographic analysis of the 0.5–13.0 and <0.5 mm classes reveals the variation in content of different types of vitrinite (with different reflective and clinkering properties). Laboratory data on the distribution of mineral components and types of vitrinite in the >13.0, 0.5–13.0, and <0.5 mm classes indicates the corresponding variation in coke quality (CSR and CRI). Experimental data permit practical recommendations regarding the enrichment of Mezhegeyskaya coal at EVRAZ enterprises so as to significantly increase the value of the concentrate and hence improve the CSR and CRI values of the coke. On that basis, the content of Mezhegeyskaya concentrate in the coking batch may be increased to 20.0%, as against 3.0–5.0% for traditionally enriched coal.

中文翻译：

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在炼焦批次中更好地使用浓缩的英国Mezhegeyugol煤炭。2.精馏分的组成和焦炭质量（CSR和CRI）

摘要

研究了Mezhegeyskaya煤矿的煤的矿物成分（具体来说，机器类别的浓缩物部分> 13.0、0.5-13.0和<0.5 mm）。研究了这些不同密度的精矿馏分中矿物成分的分布。Mezhegeyskaya煤中最佳的灰分成分对应的密度等级为0.5-13.0，特别是<0.5 mm，密度<1.27 t / m ³。对0.5–13.0和<0.5 mm类的更详细的岩石学分析表明，不同类型的镜质体（具有不同的反射和熟料特性）的含量也存在差异。> 13.0、0.5-13.0和<0的矿物成分分布和镜质石类型的实验室数据。CRI）。实验数据提供了有关在EVRAZ企业增产Mezhegeyskaya煤的实用建议，以显着提高精矿的价值，从而提高焦炭的CSR和CRI值。在此基础上，焦化批次中的Mezhegeyskaya精矿含量可以增加到20.0％，而传统浓缩煤的含量为3.0-5.0％。