Remanufacturing technology of coal mining equipment under green circular economy: application and exploration

To confront the dual challenges of excessive resource consumption and substantial ecological pressure in the coal mining industry, a remanufacturing technology system for coal mining machinery and equipment is established within the theoretical framework of the green circular economy. The technical pathways and practical significance of remanufacturing in promoting resource recycling and reducing environmental load are systematically investigated, providing essential technological support for the green transformation of the coal mining sector. Through a combination of bibliometric analysis and systematic review, current applications and developmental trends of remanufacturing technologies in coal mining equipment are comprehensively examined, with the green circular economy concept innovatively integrated into all stages of the remanufacturing process. Economic and environmental benefits are systematically evaluated through the construction of a complete remanufacturing technical framework encompassing disassembly, cleaning, inspection, repair, and reshaping processes, which demonstrates synergistic effects in extending equipment service life, improving resource reuse rates, and reducing energy consumption and pollutant emissions. Typical remanufacturing practices involving key equipment such as armored face conveyors, shearers, and hydraulic supports are analyzed and validated, with comprehensive assessments of resource conservation efficiency, energy utilization effectiveness, and environmental load reduction performance. Research indicates that standardized remanufacturing processes optimize recycling pathways for critical components to enhance material regeneration efficiency, reduce full lifecycle energy consumption and pollution emissions, and achieve coordinated optimization of economic and environmental benefits. Future development prospects are further explored, focusing on establishing comprehensive lifecycle remanufacturing industrial chains, implementing sustainability assessment mechanisms, expanding applicable equipment categories, and advancing data-driven intelligent remanufacturing technologies within the context of green circular economy principles.