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Results of research of thermodynamic modeling of thermochemical decomposition of CaSO 4 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, РЎР°РЎРћ 3 , CaS was determined. Interchange of C by Рќ 2 reduces formation of РЎР°РЎРћ 3 , CaS, and formation of РЎР°Рћ has an extreme character. With the help of method of research planning adequate equation of regression has been defined and optimum technological parameters (Рў = 1660 K and 40 % degree of carbon interchange by Рќ 2 ), providing full decomposition of CaSO 4 to РЎР°Рћ were determined. The composition of a gas phase of CaSO 4 restoration, containing 16 components was established. By reduction of pressure to 0,001 РњPР° it is possible to lower temperature of process to 1400 K. The chemical equation of CaSO 4 interaction with carbon and hydrogen was found.

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