Thermochemical Decomposition of Calcium Sulfate in Presence of Carbon and Hydrogen Mix

V. K. Bishimbayev; A. A. Yerubay

doi:10.18321/ectj36

Authors

V. K. Bishimbayev M.Auezov South-Kazakhstan State University Tauke-khan avenue 5, Shymkent, 160012, Kazakhstan
A. A. Yerubay M.Auezov South-Kazakhstan State University Tauke-khan avenue 5, Shymkent, 160012, Kazakhstan

DOI:

https://doi.org/10.18321/ectj36

Abstract

Results of research of thermodynamic modeling of thermochemical decomposition of CaSO₄ by a mix of carbon and hydrogen are given in the article. Influence of temperature on degree of carbon interchange by hydrogen on a degree of formation in systems CaO, CaO₃, CaS was determined. Interchange of C by H₂ reduces formation of CaCO₃, CaS, and formation of has an extreme character. With the help of method of research planning adequate equation of regression has been defined and optimum technological parameters ( = 1660 and 40 % degree of carbon interchange by H₂), providing full decomposition of CaSO₄ to were determined. The composition of a gas phase of CaSO₄ restoration, containing 16 components was established. By reduction of pressure to 0,001 P it is possible to lower temperature of process to 1400 . The chemical equation of CaSO₄ interaction with carbon and hydrogen was found.

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