The characterization of dry (CO2) reforming of bio-oil model compound (BMC) in granulated BF (blast furnace) slag for syngas production is presented in this study. The effects of temperature, CO2/C (the molar ratio of CO2 to C in the BMC), liquid hourly space velocity (LHSV) and granulated BF slag on the coke yield, combustible gas yield, syngas composition and lower heating value of the dry reforming process were investigated by fixed-bed experiments. The results indicated that using granulated BF slag as the heat carrier, temperature reaching 750 °C, CO2/C of 0.75 and LHSV of 0.45 h-1 could be the optimal condition for the dry reforming process, where the combustible gas yield and lower heating value were up to 1.85L/g and 23.00 kJ/g, respectively. Granulated BF slag showed positive effects on the dry reforming process, promoting the combustible gas yield and lower heating value and increasing the compositions of H2 and CO. Granulated BF slag could be used as a superior heat carrier for the dry reforming of BMC.