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The Effect of the Grinding Time on the Mechanical Activation of MnO2 Ore and tea plant Waste Carbonization Product

Journal of Physical Science and Application 2017年第4期7卷 59-65页

作者： Mustafa BOYRAZLI Elif ARANCI OZTURK Yunus Emre BENKLI Department of Metallurgy andMaterials Engineering Faculty of Engineering Firat University Elaig 23119 Turkey Department of Metallurgy and Materials Engineering Faculty of Engineering Atatiirk University Erzurum 25240 Turkey

In this study, pyrolusiteore （MnO2） was subjected to mechanical milling with a high-energy mill with carbonized tea plant wastes and the effect of grinding time on the crystal structure of the material was investigated. The ratio of Mn/Fe was 8/1, the ratio of C/（MnO2 ＋ Fe3O4） was 2 and the ratio of ball to ore was 10/1. The samples were mechanically ground at 10, 15, 20, 30, 60, 90 and 120 hours. In the processes performed on the attritor, the rotation speed of the mill shaft was determined to be 350 rpm. The results were characterized by TG-DTA, SEM and XRD analyzes. As a result of the experimental studies, it was observed that the samples subjected to mechanical grinding for 120 hours were gradually reduced due to the increasing grinding time at all the diffraction peaks when the XRD peaks were compared with the grinding times. In the thermogravimetric analysis, the sample milled for 120 hours, 50% weight loss was observed at 470 ℃, weight loss of up to 56% was observed at progressive temperatures.

关键词： tea plant wastes carbonization mechanical grinding pyrolusite ore.

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