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Analysis on the properties of calcined waste mussel shell.

Yijun Zhang, Huimin Wu, Shengyong Liu.

Mussel shell has been calcined on high temperature. Its main components calciumcarbonate decomposed into CO2andCalciumoxide. Calciumoxide is superbase catalyst for the transesterification reaction. By means of differential thermal balance, the decomposition characteristics of mussel shell have been studied. And of electron microscope, TEM shows grain morphology characteristics of calcination at different calcining temperature. Organic has decomposed during 2870C-4580C. Decomposition of calcium carbonate starts from 6000C to 8000C, when it was balance. By use of orthogonal analysis, the main influence factors of specific surface area have been optimized. The optimal process parameters are 9500Ccalcination temperature, 120ìminitial diameter and 1 hour holding time.