Coal gangue is a carbonaceous rock discharged from coal mining and coal washing processes, an industrial solid waste in the coal mining industry. Coal gangue contains complex and diverse components, has low utilization rate and difficulty in compatibility between large-scale and high added value. Long term accumulation pollutes the environment. Safely, efficiently, and resourceful dispose and utilization of coal gangue have always been unavoidable issues for the high-quality development of the coal mining industry. Under the background of carbon neutrality and the development of green building industrialization, the efficient utilization of coal gangue resources in the field of building materials has broaden development space. The efficient utilization of coal gangue in the field of building materials should start from its composition, structure, and physical and chemical properties, and strengthen basic research on its application, in order to create efficient utilization pathways and mature technical means for the disposal of coal gangue solid waste in the building materials field. This article summarizes the latest research progress of coal gangue in the field of building materials, focusing on the high-value utilization technology of coal gangue in the preparation of concrete aggregates, cementitious materials (cement, active raw materials for geopolymer, etc.), and points out the existing problems in the utilization process of coal gangue and puts forward constructive suggestions. Perspectives are made for its future development and application prospects.

中文翻译：

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建材领域煤矸石资源化高效利用的研究进展


煤矸石是煤炭开采和洗煤过程中排放的碳质岩石，是煤矿开采业中的一种工业固体废物。煤矸石成分复杂多样，利用率低，难以实现大规模与高附加值的相容性。长期积累会污染环境。如何安全、高效、资源化处置和利用煤矸石一直是煤矿行业高质量发展不可避免的问题。在碳中和和绿色建筑产业化发展的背景下，建材领域煤矸石资源的高效利用拓宽了发展空间。建材领域煤矸石的高效利用应从其成分、结构和理化性质入手，加强对其应用的基础研究，为建材领域煤矸石固废处置创造高效的利用途径和成熟的技术手段。本文总结了煤矸石在建材领域的最新研究进展，重点介绍了煤矸石在制备混凝土骨料、胶凝材料（水泥、地聚合物活性原料等）中的高值化利用技术，指出了煤矸石利用过程中存在的问题，并提出了建设性的建议。对其未来的发展和应用前景进行了展望。