为了解掺和料对泡沫脱硫石膏材料各项性能的影响顺序，基于正交试验的方法，在脱硫建筑石膏中掺入复合硅酸盐水泥、粒化高炉矿渣粉、微硅粉3种掺合料，并通过物理发泡的方法制备泡沫脱硫石膏基复合胶凝材料，研究了泡沫脱硫石膏基复合材料硬化体的物理与力学性能，同时结合极差与方差分析对其进行影响因素大小判断。结果表明：微硅粉是影响泡沫脱硫石膏材料强度、吸水率及干密度的重要因素，而粒化高炉矿渣粉主要影响软化系数的大小。结合工程实际应用需求，通过极差与方差分析得出泡沫脱硫石膏基复合材料最佳试验方案为A₂B₁C₂，即复合硅酸盐水泥掺量为12%、矿渣粉掺量为10%、微硅粉掺量为10%。

In order to understand the order of the effect of admixtures on the properties of foamed desulfurized gypsum materials，the desulfurized building gypsum was mixed with composite portland cement，granulated blast furnace slag powder and microsilica powder based on the method of orthogonal test.The foamed desulfurized gypsum-based composite cementitious material was prepared by the method of physical foaming，the physical and mechanical properties of the hardened body of the foamed desulfurized gypsum-based composite material were studied，and the influence factors were judged by combining the range and variance analysis..The results showed that the micro-silica powder was an important factor affecting the strength，water absorption and dry density，while the granulated blast furnace slag powder mainly affected the softening coefficient.Combined with the actual application requirements of the project，the optimal test scheme of foamed desulfurization gypsum-based composites was A₂B₁C₂ through range and variance analysis.The content of composite Portland cement was 12%，the content of slag powder was 10%，and the content of microsilica powder was 10%.