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http://dx.doi.org/10.7844/kirr.2021.30.1.35

A Study on Synthesis of Potassium Sulfate used Sodium Sulfate and Potassium Chloride  

Kim, Nam-Il (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Kim, Tae-Yeon (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Chu, Yong-Sik (Energy & Environmental Division, Korea Institute of Ceramic Eng. & Tech.)
Publication Information
Resources Recycling / v.30, no.1, 2021 , pp. 35-43 More about this Journal
Abstract
In this study, Na2SO4 and KCl reagents were used to synthesize K2SO4 as a basic study for recycling byproducts generated during the manufacture of steel and cement. The mole ratio of Na2SO4 to KCl, the saturation of the solution, and the stirring temperature were controlled to derive the optimal manufacturing conditions. The microstructure and crystallinity of the materials prepared were evaluated using scanning electron microscopy and X-ray diffraction analysis. Pure K2SO4 was obtained when the mole ratio of Na2SO4 to KCl was 1:6-18, the saturation of the solution was less than 160%, and the stirring temperature was 20℃, 50℃. The optimal manufacturing conditions to maximize the crystallinity and yield of K2SO4 while minimizing the energy consumption were 1:6 mole ratio of Na2SO4 to KCl, 140% saturation of the solution, and 20℃ stirring temperature.
Keywords
Wasted Glauber's salt; Cement bypass dust; Sodium sulfate; Potassium chloride; Potassium Sulfate;
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