中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
郑伯坤|段单峰|吕伟鹏
Zheng Bokun1,2,3, Duan Danfeng1,2, Lü Weipeng1,2
料浆搅拌环节作为关键环节起着承上启下的作用,针对超细尾砂搅拌过程中搅拌设备的剪切作用对料浆均质化的影响,通过对搅拌装置参数优化及试验研究等方法,对搅拌桶叶轮结构形式、叶轮直径和叶轮安装高度进行研究分析,由扩展度、平均强度和变异系数来评判均质化搅拌效果,最终得到最佳搅拌参数为叶轮直径7 cm,叶轮安装高度1 cm,在较准确的放大基准上为工业现场提供一定的理论支撑。利用 3因素 3水平的正交实验及分析方法,了解到超细尾砂料浆在泵送和自流方式选择上对应的最适宜坍落度和浓度分别为 25~27 cm、56 %~58 %和 27~29 cm、50 %~54 %;超细尾砂浓度对搅拌速度较敏感,浓度越大需要的搅拌速度越高.
The mixing process of slurry plays a pivotal role as a critical link in filling operations. To address the impact of shear forces from mixing equipment on the homogenization of ultrafine tailings slurry, this study optimizes mixing parameters through experimental investigations. Key factors analyzed include impeller type, diameter, and installation height. Homogenization effectiveness was evaluated using spread diameter, average strength, and coeffi-cient of variation. The optimal parameters were determined as an impeller diameter of 7 cm and a bottom clearance of 1 cm, providing theoretical guidance for industrial-scale applications. Through three-factor three-level orthogonal experiments, the most suitable slump and concentration ranges for ultrafine tailings slurry were identified: 25-27 cm and 56 %-58 % for pumping, and 27-29 cm and 50% -54 % for gravity flow. Additionally, slurry concentration showed significant sensitivity to mixing speed, with higher concentrations requiring increased mixing intensity.