Understanding the Energy-Saving mechanism of ceramic balls in tumbling mills

IF 4.9 2区 工程技术 Q1 ENGINEERING, CHEMICAL
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引用次数: 0

Abstract

This study investigates why ceramic balls achieve superior grinding performance compared to steel balls at lower densities and lower energy consumption. Particle motion analysis shows that increasing the filling level significantly improves the velocity distribution of the grinding media. The energy input from the mill is mainly converted into the kinetic and potential energy of the media, with potential energy being dominant. As the filling level increases, the efficiency of kinetic energy conversion improves. Collisions between media and mineral particles dominate energy transfer, and lower media density enhances collision energy distribution uniformity. Reducing media density decreases grinding energy consumption while maintaining the same grinding effect.

了解陶瓷球在滚磨机中的节能机理
本研究探讨了为什么陶瓷球能在较低密度和较低能耗条件下实现比钢球更优越的研磨性能。颗粒运动分析表明,提高填充度可显著改善研磨介质的速度分布。磨机输入的能量主要转化为介质的动能和势能,其中势能占主导地位。随着填充量的增加,动能转换的效率也会提高。介质和矿物颗粒之间的碰撞在能量传递中占主导地位,降低介质密度可提高碰撞能量分布的均匀性。降低介质密度可减少研磨能耗,同时保持相同的研磨效果。
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来源期刊
Minerals Engineering
Minerals Engineering 工程技术-工程:化工
CiteScore
8.70
自引率
18.80%
发文量
519
审稿时长
81 days
期刊介绍: The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.
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