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为开发磷石膏分解新技术，在模拟工况操作特性的模拟试验装置中进行了磷石膏分解的工业反应动力学试验，研究了温度、气氛、停留时间、生料化学组成、焦炭等不同影响因素以及“还原气氛－氧化气氛”区对磷石膏生料分解反应动力学的作用规律。结果表明，在１０６０～１１００℃的弱还原气氛和１１００℃的弱氧化气氛中分别停留３～５ｍｉｎ，磷石膏生料的脱硫率可达到９５％以上。对比水泥生料中ＣａＣＯ３的悬浮态分解结果可以预测在同等条件下，悬浮态的磷石膏生料只需在分解炉内停留１ｍｉｎ左右，便可达到相同的分解和脱硫效果。
In order to develop a new technology of phosphogypsum decomposition, industrial reaction kinetics experiments of phosphogypsum decomposition were carried out in a simulated test device simulating operating conditions of operating conditions. The influences of temperature, atmosphere, residence time, raw chemical composition, coke and other influencing factors And the effect of “reducing atmosphere - oxidizing atmosphere” on kinetics of phosphogypsum raw meal decomposition reaction. The results show that the desulfurization rate of phosphogypsum raw material can reach more than 95% in the weak reducing atmosphere of 1060 ~ 1100 ℃ and the weak oxidizing atmosphere of 1100 ℃ respectively for 3 ~ 5min. Comparing the results of suspension state decomposition of CaCO3 in cement raw meal, it can be predicted that under the same conditions, the same decomposition and desulfurization effect can be achieved only when the suspended phosphogypsum raw material stays in the decomposition furnace for about 1min.