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A Study on the Desulfurization Efficiency of Limestone Sludge with Various Admixtures
서성관,추용식,심광보,이종규,송 훈 한국세라믹학회 2015 한국세라믹학회지 Vol.52 No.6
The flue gas desulfurization (FGD) process is one of the most effective methods to reduce the amount of SO2 gas (up to 90%) generated by the use of fossil fuel. Limestone is usually used as a desulfurizing agent in the wet-type FGD process; however, the limestone reserves of domestic mines have become exhausted. In this study, limestone sludge produced from the steel works process is used as a desulfurizing agent. Seven different types of additives are also used to improve the efficiency of the desulfurization process. As a result, alkaline additive is identified as the least effective additive, while certain types of organic acids show higher efficiency. It is also observed that the amount of FGD gypsum, which is a by-product of the FGD process, increases with the used of some of those additives.