首页|搅拌参数对尾盐充填料浆流动特性及强度的影响

搅拌参数对尾盐充填料浆流动特性及强度的影响

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为了提高尾盐充填料浆的质量,实现矿山尾盐低成本、高质量充填,研究了机械搅拌因素对尾盐充填料浆质量的影响.通过分析不同搅拌时间和不同搅拌转速下尾盐料浆的扩展度、塌落度以及试块的3 d、7 d和28 d强度测试结果,探究了不同搅拌条件下充填料浆的搅拌效果.结果表明:随着搅拌转速和搅拌时间的增加,尾盐料浆的均质性有所提升,料浆中的大块颗粒明显减少;机械搅拌强度的增加能够提高充填料浆的流动性,当搅拌转速为1120 r/min、搅拌时间为150 s时,搅拌叶轮对充填料浆的搅拌效率最高,此时料浆的流动性较好;搅拌时间和搅拌转速的增大可以提高料浆中物料颗粒的碰撞次数,从而强化尾盐和氧化钙之间的反应效果,在一定范围内提高尾盐充填体的强度.
Effect of Stirring Parameters on Flow Characteristics and Strength of Potash Salt Filling Slurry
In order to improve the quality of the tailing salt filling slurry and achieve the low-cost and high-quality filling of tailing salt in the mine,the influence of mechanical stirring factors on the quality of tailing salt filling slurry was studied.The stirring effect of filling slurry under different stirring conditions was investigated by analyzing the expansion degree,slump and the strength test results of 3 d,7 d and 28 d under different stirring time and different stirring speed.The results show that with the increase of stirring speed and stirring time,the homogeneity of the tailing salt slurry is improved,and the large particles in the slurry are obviously reduced.The increase of mechanical stirring intensity can improve the fluidity of filling slurry.When the stirring speed is 1120 r/min and the stirring time is 150 s,the stirring efficiency of the stirring impeller to the filling slurry is the highest,and the fluidity of the slurry is better.The increase of stirring time and stirring speed can increase the number of collisions of material particles in the slurry,thus strengthening the reaction effect between tailing salt and calcium oxide,and improving the strength of tailing salt filling body within a certain range.

Tailing salt filling slurryFlow characteristicsFilling body strengthStirring timeStirring speed

郑伯坤、石勇、黄腾龙、郑博洋、彭亮、尹旭岩、江科

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长沙矿山研究院有限责任公司,湖南长沙 410012

金属矿山安全技术国家重点实验室,湖南长沙 410012

湖南省矿山固废综合利用工程技术研究中心,湖南长沙 410012

钾盐尾矿料浆 流动特性 充填体强度 搅拌时间 搅拌转速

国家重点研发计划项目国家重点研发计划项目湖南省高新技术产业科技创新引领计划项目湖南省自然资源厅科技项目

2022YFC29040032023YFC29072032022GK40572022-40

2024

矿业研究与开发
长沙矿山研究院有限责任公司 中国有色金属学会

矿业研究与开发

CSTPCD北大核心
影响因子:0.763
ISSN:1005-2763
年,卷(期):2024.44(6)