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为了探究尾矿浆液改良处理方法，开展了掺加不同固化剂、单一电渗、电渗联合固化剂改良尾矿浆液的室内试验。基于排水量、含水率、液塑限、压缩指数、抗剪强度、渗透系数和电流等参数变化，对比分析各改良方法对尾矿浆液快速脱水和固化效果的影响。试验结果表明：与未处理前相比，固化剂促进了尾矿浆液强度的提高及塑性和渗透性的降低；电渗可使尾矿浆液脱水速率和脱水量得以提升；电渗联合固化剂可以进一步促进尾矿强度的提高和塑性的降低，抗剪强度与对照组(未处理试验组)相比提高约21.5倍，约是单独掺加固化剂处理后强度的2倍，脱水率相比于对照组由36.3%提高到70.0%,进而证实了电渗与固化剂联合法的有效性，其中电渗联合水泥在改良尾矿浆液中综合效果最佳。
Abstract：This study systematically investigates the synergistic effects of electro-osmosis and chemical stabilizers on tailings slurry treatment through laboratory experiments. Three approaches were compared:(1) stabilizer addition alone,(2) standalone electro-osmosis, and(3) combined electro-osmosis-stabilizer treatment. Key parameters including drainage volume, water content, atterberg limits, compression index, shear strength, permeability coefficient, and electric current were monitored to evaluate dewatering efficiency and solidification performance. The results demonstrate that:(1) Chemical stabilizers effectively enhanced slurry strength while reducing plasticity and permeability;(2) Electro-osmosis accelerated dewatering, achieving higher drainage rate compared to gravity settlement;(3) The combined treatment yielded superior performance: Shear strength reached 21.5 times to the control value(2 times higher than stabilizer-only treatment); Dewatering efficiency improved from 36.3% to 70.0%; Optimal results were obtained with cement-based stabilizers.
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基本信息:
DOI：10.19760/j.ncwu.zk.2025031
中图分类号:X75
引用信息:
[1]刘娉慧,赵琦琦,侯传营.电渗法联合固化剂改良尾矿浆液试验研究[J].华北水利水电大学学报(自然科学版),2025,46(02):129-136.DOI:10.19760/j.ncwu.zk.2025031.
基金信息:
河南省自然科学基金项目(232300421208)
2024-03-31
2024-03-31
2024-03-31