The methane reduction (MR) of SnO 2 has been proposed as a highly efficient method for recovering Sn from SnO 2 containing industrial wastes. The MR of SnO 2 also produces a mixture of H 2 and CO, which can be further utilized as a syngas for the production of various fuels through the Fisher-Tropsch process. To optimize the process parameters, we studied the effect of the amount of supplied CH 4 (CH 4 /SnO 2 molar ratios of 1, 3, or 5) on the recovery of Sn from SnO 2 and the H 2 /CO ratio in the produced gas. Through a combination of thermodynamic simulation and experimental confirmation, we found that the recovery rate of Sn, and the molar ratio of H 2 /CO in the product gas, increased as a function of the supplied-CH 4 /SnO 2 ratio. We found that the recovery of Sn increased as a function of supplied-CH 4 (95.5% at CH 4 /SnO 2 =5) however, the purity of Sn was consistent for all studied samples (~99.90%). Our results confirm that 3N quality highpurity Sn can be easily recovered from SnO 2 containing industrial wastes by direct solid-gas reduction.