발간논문

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Vol.20, No.5, 432 ~ 438, 1982
Title
Kinetics of the Formation of Potassium jarosite at Elevated Temperatures
유재근Jae Keun Yoo, 원창환Chang Whan Won, 백영현Young Hyun Paik
Abstract
A mathematical model for the precipitation of spherical particles has been developed for the growth stage of particles where no further nucleation is accounted for. The applicability of the model has been tested by measuring the rate of precipitation of potassium, Jarosite from ferric sulfate solution at elevated temperatures, and the agreement was found to be satisfactory. The analysis of results revealed that the precipitation of potassium jarosite is controlled by the interface process of an activation energy 6.2 ㎉/㏖. It is also interesting to note that the lower the initial concentration of ferric sulfate and the ratio of iron to potassium, and also the higher the basicity of solutions, the higher the yield was obtained.
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