Meisteel Technology Center, Research Institute of Baoshan Iron & Steel Corporation Ltd.

通过煤岩学方法中的反射率分布和煤岩显微组分可反映煤质特性,但随着炼焦煤资源日益劣化,需利用煤岩学方法判断炼焦异常煤,并对异常炼焦煤的质量进行评价。通过煤岩反射率自动测试系统对炼焦煤资源进行分析,结合煤岩反射率分布并根据商品煤的煤岩判定标准,在炼焦配煤实际应用中判断是否为同类炼焦煤混煤、混入低品质炼焦煤的混煤或混入非炼焦煤的混煤,并从煤氧化的判定、混入兰炭或工业废渣等方面探讨由煤岩显微组分判定异常煤。研究表明:煤岩反射率主要应用于判定混煤,应区别对待同类混煤、混入低质炼焦煤和混入非炼焦煤该3类混煤,尤其需避免混入非炼焦煤;煤岩显微组分是对煤岩反射率自动测定系统的补充,通过煤岩观察显微组分,可以判断炼焦煤的氧化、混入兰炭及混入工业废渣等是炼焦煤异常的主要原因;煤岩学方法是判定炼焦煤异常的主要技术手段,但煤岩指标仅对传统指标有补充作用而非完全替代作用。

The reflectance distribution and micro⁃component analysis in coal petrography can reveal the quality char⁃acteristics of coal. However, as the quality of coking coal resources deteriorates, it is necessary to use coal petrogra⁃phy to identify abnormal coking coal and evaluate its quality. By using an automatic coal reflectance testing system,coking coal resources are analyzed. Combined with the reflectance distribution and the petrographic standards for com⁃mercial coal, it is possible to determine whether the blended coal in coke production is a mix of similar types of co⁃king coal, a mix with low⁃quality coking coal, or a mix with non⁃coking coal. The study also explores the identifica⁃tion of abnormal coal through the examination of coal oxidation, the mixing of blue carbon, or industrial waste,based on the micro⁃components of the coal. The research indicates that coal reflectance is mainly used to identifymixed coals, and it is important to differentiate the similar type mixed coals, coal mixed with low⁃quality cokingcoal, and coal mixed with non⁃coking coal, especially avoiding the inclusion of non⁃coking coal. The microscopiccomposition of coal petrography is a supplement to the automatic measurement system of coal rock reflectance, observ⁃ing microscopic components through coal petrography can help identify the main reasons for abnormalities in cokingcoal, such as oxidation, mixing with blue carbon, or industrial waste. Coal petrography is a main technical methodfor identifying abnormal coking coal, however, coal petrography indicators only have a supplementary effect on tradi⁃tional indicators rather than a complete replacement effect.

张文成. 煤岩学方法在异常炼焦煤煤质评价中的应用 [J]. 煤质技术, 2024, 39 (1): 54-60.

ZHANG Wencheng. Application of coal petrology method in abnormal coking coal quality assessment [ J]. CoalQuality Technology, 2024, 39 (1): 54-60.