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搅拌制备作为膏体充填技术的核心环节之一，直接影响膏体的均质性能和流变特性。然而，当前对膏体专用搅拌装备缺乏系统研究，导致膏体搅拌制备效率与均质化效果受限。为此，本研究通过物理实验与数值模拟相结合的方法，分析了叶片宽径比和长宽比对膏体搅拌效果的影响机制。通过改变叶片参数（宽径比0.2～0.5，长宽比1.0～4.0），结合扭矩传感器实时监测搅拌过程的稳定时间；并基于流体软件进行数值模拟，验证流场分布特征和物料均匀度。结果表明：当叶片宽径比为0.3时，搅拌稳定时间最短（315 s），剪切混合效率最高；长宽比为2.0时，物料均质性最佳。优化后的叶片参数（宽径比0.3，长宽比2.0）可将搅拌时间缩短至4.5 min，显著提升膏体搅拌制备效率，并为膏体充填专用搅拌机的研发提供理论依据。
Abstract：Mixing,as a critical stage in paste backfill technology,directly affects the homogeneity and rheological properties of the paste. However,the current lack of systematic research on specialized paste mixing equipment limits the efficiency of paste mixing preparation and the homogenization effect. To address this,the influence mechanisms of the blade width-to-diameter ratio and length-to-width ratio on the mixing effect by combining physical experiments with numerical simulations was investigated. By varying blade parameters(width-to-diameter ratio of 0. 2-0. 5,length-to-width ratio of 1. 0-4. 0),mixing stabilization time was monitored in real-time via a torque sensor.;Concurrently,numerical simulations based on fluid software were conducted to verify the flow field distribution characteristics and material uniformity. Results indicate that a width-to-diameter ratio of 0. 3 yields the shortest stabilization time(315 s) and highest shear efficiency;when the length-to-width ratio is 2. 0,the material homogeneity is optimal. The optimized blade parameters(width-to-diameter ratio of 0. 3,length-to-width ratio of 2. 0) can shorten the mixing time to 4. 5 minutes,significantly enhancing preparation efficiency and providing a theoretical foundation for the development of specialized paste backfill mixers.
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基本信息:
DOI：10.20238/j.issn.1671-4172.2026.02.016
中图分类号:TD853.34
引用信息:
[1]杨柳华,王永彬,寇云鹏,等.全尾砂膏体搅拌叶片参数优化研究[J].有色金属(矿山部分),2026,78(02):141-151.DOI:10.20238/j.issn.1671-4172.2026.02.016.
2026-01-06
2026-01-06
2026-01-06