【摘要】 应用物理化学中的吉布斯－霍姆亥兹方程，从理论上推导出硫酸钙在高温条件下分解特性， 并且建立了焓与温度的关系函数． 从而求出不同温度下硫酸钙的分解压力． 从理论上证明了硫酸钙的分解压力随温度升高逐渐增大．更多还原

【Abstract】 The paper deals with the behavior of calcium sulfate at high temperature. Gibbs Helmhohz equation is applied to study decomposing pressure of calcium sulfate. In addition, formula which represents the relationship between entropy and temperature is put forward. It is proved that decomposing pressure of calcium sulfate will increase when temperature rises in the paper. The formula can supply useful data for the study of desulfurization in theory.\;更多还原