Large amount of solid propellants would be discarded each year due to failure, and the recycling/reuse of the waste propellants is important for energy conservation and environmental protection. On the basis of thermogravimetry-differential scanning calorimetry, coupled with Fourier transform infrared spectroscopy (TG-DSC-FTIR) technique, the solid-state reaction properties of the mixtures of propellant and anthracite has been investigated with details. Propellant-anthracite blends at different ratios were heated up to 1300 ℃ at 10 K·min^-1 heating rate in air, and the FTIR spectra have been obtained synchronously. The results show that as the propellant content increases, the decomposition process moves to the low temperature zone. The ignition temperature of anthracite decreases from 560 ℃ to 383 ℃. The burn out temperature decreases from 676 ℃ to 616 ℃, and the comprehensive combustion characteristic index increases from 2.36 E-8 to 1.27 E-7. Moreover, the apparent activation energy of the fixed carbon combustion part decreases from 165.6 to 91.2 kJ·mol^-1. The FTIR spectra show that as the propellant content increases, the release of CO₂ and CO as the major gaseous products of anthracite oxidation, move to the low temperature zone. It indicates that the waste propellants can greatly enhance the oxidation process, ignition and combustion of anthracite.