In this paper, a novel particle wear model was developed and introduced into the thermo-fluid CFD-DEM platform. In order to reveal the coupling mechanism of heat transfer and particle wear in gas-solid fluidized system. Numerical investigate were designed based on the two basic models of particle wear: abrasion and fragmentation. Corresponding experiments were set to research the time-varying rules of material size, abrasion and fragmentation rate of these particles. As well as the key parameters of oxidation heating process including the heating rate and temperature standard deviation. The results show that the abrasion mechanism facilitates the heat transfer process and leads to a gradual development of the particle size distribution from narrow to wide sieves. The abrasion rate shows an approximately linear relationship with time. Furthermore, abrasion mechanism leads to an increase of approximately 16% in the heating rate coefficient (C) and a 6% enhancement in temperature uniformity. The fragmentation mechanism is unfavorable to the heat transfer process. Fragmentation mechanism leads to a significant stratification phenomenon among particles of different sizes. The fragmentation rate initially increases, then decreases, and finally stabilizes throughout the entire process. The presence of fragmentation results in a decrease of approximately 33% in the heating rate coefficient (C) and a reduction of approximately 21% in temperature uniformity.

Abrasion; Fragmentation; CFD-DEM; Oxidation heating; Fluidization wear