Abstract
Cemented tailings backfill (CTB), composed of tailings, binder, and water, is widely used for filling underground goaves in mining operations. Unmanaged tailings can occupy extensive land and pose significant environmental risks. Microwave technology offers a promising approach to enhance the utilization of tailings, reducing dependency on natural resources. However, limited research on microwave heating parameters has impeded its broader adoption. This study uses the orthogonal experimental method to study the influence of various factors on the strength of the CTB and to determine the impact capacity of each factor. Additionally, this study conducted a visual analysis of the microwave heating time (MHT), microwave delay time (MDT), cement-tailings ratio, slurry concentration and microwave power (MP) to verify the experimental results. The results show that microwave heating can enhance or diminish the mechanical properties of CTB samples at different curing ages, depending on the specific microwave parameter settings. Research indicates that microwave technology can be effectively applied to mine backfill materials to improve their early strength and the modulus of elasticity.
Published Version
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