High - Temperature Carbothermic Reduction of Coal Beneficiation Waste
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2025-01-01
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Abstract
This study investigates the high - temperature carbothermic reduction of coal beneficiation waste (CBW) as a sustainable approach to resource recovery and waste valorisation. Addressing the environmental burden of CBW accumulation, the inherent carbon content of the waste is utilized as a reductant to transform residual metal oxides into valuable metallurgical products. Experiments were conducted to evaluate the influence of temperature, holding time, reductant quantity, and additives on the reduction process. Mathematical models describing the degree of carbothermic reduction and the reaction rate were developed. Results demonstrate the technical feasibility of carbothermic reduction for converting CBW into reusable materials, offering the dual benefits of waste mitigation and resource circularity. This approach aligns with circular economy principles, providing a scalable solution to minimize landfill disposal and promote sustainability within coal - dependent industries. The study highlights the potential for industrial implementation, emphasizing the economic and environmental advantages of metallurgical reprocessing of these mineral wastes.