制备工艺对污泥陶粒表面裂缝和孔隙率的影响
发布时间：2018-10-21 12:05
【摘要】：为了优化污泥制备陶粒的工艺,从不同成球工艺、干燥方式、热处理制度、煅烧温度等方面分析了陶粒表面裂缝和孔隙率的变化,并评价所制备陶粒的性能。结果表明,采用自然晾干2 h后干燥,接着在400℃预热10 min后在1100℃煅烧30 min是较好的制备工艺,可有效消除陶粒表面裂缝,提高了孔隙率,且陶粒的1 h吸水率、抗压强度、软化系数、粒型系数等均符合GB/T 17431.1—2010的要求,重金属溶出率符合GB 25467—2010的要求。
[Abstract]:In order to optimize the process of preparing ceramsite from sludge, the changes of surface crack and porosity of ceramsite were analyzed from the aspects of different pelletizing process, drying method, heat treatment system and calcination temperature, and the properties of the prepared ceramsite were evaluated. The results showed that drying natural air for 2 h, then preheating at 400 鈩，
本文编号：2285042
[Abstract]:In order to optimize the process of preparing ceramsite from sludge, the changes of surface crack and porosity of ceramsite were analyzed from the aspects of different pelletizing process, drying method, heat treatment system and calcination temperature, and the properties of the prepared ceramsite were evaluated. The results showed that drying natural air for 2 h, then preheating at 400 鈩，
本文编号：2285042
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