Effect of operating parameters on fine particle grinding in a vertically stirred media mill
Effect of operating parameters on fine particle grinding in a vertically stirred media mill
复制标题
立式搅拌介质磨中操作参数对细颗粒研磨的影响
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
A. Ingram
中科院分区：
文献类型：
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作者：
Yang Yang;N. Rowson;R. Tamblyn;A. Ingram
摘要本文研究了垂直搅拌介质磨的操作参数对细颗粒粉碎过程的影响。在不同的操作条件下，通过改变固体含量，叶尖速度和叶轮的配置，通过减少的效果进行了研究。经证明，65%（w/w）的固体含量比75%（w/w）更有效。产品尺寸（）的最大差异约为2。用正电子发射粒子跟踪法（PEPT）描述了在5.23 m/s、6.54 m/s和9.81 m/s的尖端速度下的速度图。较低的叶尖速度可节省比能50-100 kWh/t。用新型叶轮代替标准叶轮，可使能耗100-300 kWh/t以上的产品降低1-2倍。
ABSTRACT This article evaluates the effects of operating parameters on fine particle grinding process with a vertically stirred media mill. The effects are investigated through size reduction under different operating conditions by changing solids content, tip speed and the configuration of the impeller. Solids content at 65% (w/w) is demonstrated to be more efficient than 75% (w/w). The maximum difference in product size () is about 2 . Velocity maps are described at tip speeds of 5.23 m/s, 6.54 m/s and 9.81 m/s by positron emission particle tracking (PEPT). The lower tip speed saves the specific energy 50–100 kWh/t. Over energy input 100–300 kWh/t, of product is reduced 1–2 by replacing standard impeller with new types of impeller.