This article uses the methanol dissolution method to extract sodium thiocyanate from the mixed salt obtained by filtering and evaporating the flue gas desulfurization rich solution,and obtains a product with a purity of＞98.5％.During the experiment,it was found that the purity of the product hanging on the wall of the sodium thiocyanate methanol solution was higher than that of the product at the bottom of the pot during the evaporation process.
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