Urbaniak Dariusz, Otwinowski Henryk, Wyleciał Tomasz, Zhukov Vladimir Pavlovich, Barochkin Aleksei Yevgenyevich, Boryca Jarosław
Department of Thermal Machinery, Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, 42-201 Czestochowa, Poland.
Department of Production Management, Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, 42-201 Czestochowa, Poland.
Materials (Basel). 2021 Apr 16;14(8):2008. doi: 10.3390/ma14082008.
Raw materials are used in many industrial technologies. The raw material frequently has to be prepared as an intermediate with an appropriate particle size distribution, which requires the use of grinding. In grinding processes, energy consumption is a very important profitability criterion for the applied particular size reduction technology. The paper describes the comminution process that takes place in the jet mill using a modified form of the thermodynamic theory of grinding. In this theory, new material characteristics have been added: the surface and volumetric density of grinding energy. The thermodynamic theory is a combination of the classical Kick's theory and the modified form of Rittinger's theory. The tested physical magnitudes are a measure of the energy consumption of the grinding process. They describe the energy that must be provided in the grinding process to overcome interactions between particles related to the volume and surface of the material. Knowledge of these magnitudes is necessary to model thermomechanical phenomena in the solid state. The paper presents the results of research on comminution in a jet mill, on the basis of which the values of the tested material magnitudes were determined. It is graphically shown how the values of the tested magnitudes depend on the grain size of the ground samples.
原材料被应用于许多工业技术中。原材料常常需要被制备成具有合适粒度分布的中间体，这就需要进行研磨。在研磨过程中，能耗是所应用的特定粒度减小技术的一个非常重要的盈利标准。本文使用一种改进形式的研磨热力学理论描述了气流粉碎机中发生的粉碎过程。在该理论中，增加了新的材料特性：研磨能量的表面密度和体积密度。热力学理论是经典的基克理论和改进形式的里廷格理论的结合。所测试的物理量是研磨过程能耗的一种度量。它们描述了在研磨过程中为克服与材料体积和表面相关的颗粒间相互作用而必须提供的能量。了解这些量对于模拟固态中的热机械现象是必要的。本文给出了气流粉碎机中粉碎研究的结果，据此确定了所测试材料量的值。以图表形式展示了所测试量的值如何取决于研磨样品的粒度。
