振动球磨机磨矿参数对水合石灰超细粉碎能耗的影响

IF 1.827 Q2 Earth and Planetary Sciences
Eyüp Sabah
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引用次数: 0

摘要

研究了水合石灰在振动球磨机中的磨矿行为,重点研究了磨矿时间(10-30 min)、球粒充填(60-80%)和物料充填(10-40%)不同操作参数下,磨矿能耗与磨矿效率在比表面积变化和超细粒度减小方面的关系。粉碎过程显著提高了水合石灰的初始中位粒径(d50)和比表面积(分别为297µm和0.54µm /g),在充球80%和充料30%的最佳条件下,在最短的粉碎时间(10 min)内实现了比表面积的最大增大(ΔS = 2.17µm /g)和最终粒径的减小(d50 = 6.37µm),能耗相对较低(Em < 2.5 kWh/t)。结果表明,磨矿时间延长导致的能量投入增加并不一定与颗粒团聚效应导致的比表面积成比例增加相对应,表明存在影响能量利用效率的关键磨矿参数。扫描电镜(SEM)分析证实了这一点,结果显示水合石灰颗粒的形态发生了显著变化,其特征是在磨矿的早期阶段大幅缩小,随后形成密集堆积的团聚体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of vibratory ball mill grinding parameters of hydrated lime ultrafine grinding on consumed energy

This study investigated the grinding behavior of hydrated lime in a vibratory ball mill, focusing on the relationships between grinding energy consumption and grinding efficiency in terms of specific surface area evolution and ultrafine particle size reduction under various operational parameters, including grinding time (10–30 min), ball filling (60–80%), and material filling (10–40%). The initial median particle size (d50) and specific surface area of hydrated lime (297 µm and 0.54 m2/g, respectively) were significantly enhanced through the grinding process, with the maximum increase in specific surface area (ΔS = 2.17 m2/g) and reduction in final particle size (d50 = 6.37 µm) achieved at the shortest grinding time (10 min) under optimum conditions of 80% ball filling and 30% material filling, with relatively low energy consumption (Em < 2.5 kWh/t). The results demonstrated that higher energy inputs due to prolonged grinding times did not necessarily correspond to proportional increases in specific surface area due to particle agglomeration effects, indicating the presence of critical grinding parameters affecting energy utilization efficiency. This was confirmed by SEM analysis, which revealed significant morphological alterations in hydrated lime particles, characterized by substantial size reduction in the early stages of grinding followed by the formation of densely packed agglomerates.

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来源期刊
Arabian Journal of Geosciences
Arabian Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-
自引率
0.00%
发文量
1587
审稿时长
6.7 months
期刊介绍: The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone. Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.
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