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In this paper, a novel desulfurization process was proposed to recover elemental sulfur from smelter off-gas with high-content sulfur dioxide (SO2) using calcium sulfate (CaS) as a new recycling Ca-based desulfurizer. Based on the simulation results, an optimum temperature range between 450°C and 550°C was determined. In that range a high SO2 removal efficiency was obtained for the smelter off-gas,...
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