With the objective of developing a foundation for a Sulfur-Producing Flue Gas Desulfùrization (SP-FGD) process. a systematic study of the oil-sands fluid coke-S02(g) syaem was performed. Expenmental work and thermodynamic analysis demonstrated that S 0 2 is readily converted into elernental suifur with high yield (>gooh) when C is the limiting reagent. according to the overall reaction C + Sot = S + COt. Complete SO? conversion can also be achieved at C/SOt ratios >1 or with a long sas-coke contact time. but elemental sulfur yield decreases due to the formation of COS and CS2. The contact time required to reach complete conversion is strongly affected by temperature, falling from 8 seconds at 700 'C to 1 second at 1000 'C. Complete removal of S02 was achieved for gas streams containing 2 to 30% of S 0 2 . The Shnnking Core Mode1 (SCM) analysis of the kinetic data established that both chernical reaction and ash layer difision controlled the syaem. The effective diffisivity (De)of the SO2 at various temperatures and the activation energy (Ea) were determined, and their values are in agreement with the ones reported for sirnilar systems. Results fiom Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy (SEM-EDS)analysis corroborated the formation of an ash layer and revealed the build-up of sulfur at the interface. Results of X-ray Photoeiectron Spectroscopy (XPS) analyses suggest the formation of C-S complexes on the surface of the cokeparticles during carbothemal reduction of S9.