**4. Conclusions**

There are many –CH groups and hydroxyl groups in anthracite, which makes the combustion performance of anthracite significantly better than that of coke powder. When the coke powder is partially replaced by anthracite, the whole combustion process will be accelerated. DVM and DRPM models were used to calculate the dynamics of MBF and QPF at different heating rates. Through comparative analysis of the relevant kinetic parameters and root mean square error, it was found that the DRPM model was more suitable for describing the combustion process of MBF and QPF. Although quasi-particles increase the apparent activation energy of fuel combustion, they also produce a heat storage effect on fuel particles, improve their combustion performance, and reduce the adverse effect of diffusion effect on the combustion reaction process. According to the differential thermal analysis of SDM samples, the coupling between volatiles combustion and redox reaction of iron oxides is obvious in the early combustion period and the oxidation of iron oxides will occur again when the combustion reaction of fuel is weakened.

**Author Contributions:** In this paper, the experimental work and thesis writing were mainly undertaken by J.L. and Y.Y. (Yaqiang Yuan), while J.Z., Z.H. and Y.Y. (Yaowei Yu) were mainly responsible for the review, guidance and revision of the manuscript. All authors have read and agreed to the published version of the manuscript.

**Funding:** This work was financially supported by National Natural Science Foundation of China (51874171) and University of Science and Technology Liaoning Talent Project Grants (No. 601011507-05).

**Conflicts of Interest:** The authors declare no conflict of interest.
