Abstract: Mine tailings are the solid waste discharged during mineral processing to extract valuable elements. To achieve a higher recovery rate of valuable elements, the development of mineral processing technology has led to the particle size of produced mine tailings becoming finer. Utilizing fine tailings and cementitious material for backfill purposes is essential for the mine to mitigate its surface tailings disposal. However, due to the fine particle size and poor permeability of the fine tailings, there are still problems in fine tailings backfill, such as the difficulty of tailings concentration, the low dewatering efficiency of backfill slurry in the stope, and the slow accumulation of the backfill strength. In recent years, the research of super-flocculation theory, the exploration of high-efficiency flocculant and the popularization and application of deep-cone thickener have achieved efficient concentration and dehydration of fine tailings. The use of plunger pumps and superplasticizers have solved the technical problems of long-distance transportation of fine tailings paste materials. In addition, the research of cementitious material for fine tailings has great potential to improve the backfill strength and reduce the backfill cost. This paper combs and analyzes the physical and chemical properties of fine tailings from various mines, summarizes the current industrial problems engineers face for fine tailings backfill, and the research progress of the critical technologies and materials of fine tailings backfill at home and abroad. Finally, the paper further discussed the potential development and research areas of mine backfill technologies using fine tailings.
张雷, 郭利杰, 许文远, 魏晓明. 细尾砂在矿山充填应用中关键工艺与材料的研究进展[J]. 材料导报, 2023, 37(23): 22100279-11.
ZHANG Lei, GUO Lijie, XU Wenyuan, WEI Xiaoming. Research on Crucial Technological and Material Issues of Applying Fine Tailings to Mine Filling: a Review. Materials Reports, 2023, 37(23): 22100279-11.
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2023, Vol. 37 
