The particle attrition could lead to the degradation of industrial product quality and results in a series of environmental problems. However, the influence of material properties on the attrition process of particles has long been ignored by researchers. In this article, the particle attrition characteristics of inorganic materials are investigated in a laboratory‐scale fluidized bed reactor (FBR). This research is focused on the attrition behavior of particle in FBR. On the other hand, the influence of attrition time, circulation flow rate, and attrition propensity on particle attrition is also studied by using the attrition kinetic model. The experiment results of particle size distribution indicate that the particle attrition in the FBR arises from surface abrasion. Meanwhile, it is found that the attrition rate decline slows and approaches a constant value with increasing attrition time. In addition, the attrition rate increases with circulation flow rate and attrition propensity. It can be seen that the attrition process of particle is strongly related to its material physical characteristics and fluidization conditions. However, the widely used Gwyn's model cannot accurately describe these characteristics. In the current study, a new model of abrasion attrition theory coupled with material mechanical characteristics of particle is implemented to describe the attrition process. The model parameters have definite meanings and are highly correlated with the material mechanical properties of particle, and the predictions of this new coupled model are also in better agreement with Gwyn's model.

中文翻译：

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流化床反应器中磨耗理论与机械特性的耦合

颗粒磨损可能导致工业产品质量下降，并导致一系列环境问题。然而，研究人员长期以来一直忽略了材料特性对颗粒磨损过程的影响。在本文中，在实验室规模的流化床反应器（FBR）中研究了无机材料的颗粒磨损特性。这项研究集中于颗粒在FBR中的磨损行为。另一方面，还利用磨损动力学模型研究了磨损时间，循环流量和磨损倾向对颗粒磨损的影响。粒度分布的实验结果表明，FBR中的颗粒磨损是由表面磨损引起的。与此同时，结果发现，随着磨损时间的增加，磨损率的下降速度变慢并趋于恒定。另外，磨损率随着循环流量和磨损倾向而增加。可以看出，颗粒的磨耗过程与其材料的物理特性和流态化条件密切相关。但是，广泛使用的格温模型不能准确地描述这些特征。在当前的研究中，建立了一种新的磨损理论与模型的材料力学特性相结合的模型来描述磨损过程。模型参数具有明确的含义，并且与颗粒的材料力学性能高度相关，并且该新耦合模型的预测也与Gwyn模型更吻合。