Development of Microcrystalline Foam Glass from Kaolin Tailings
The microcrystalline foam-glass ceramics were synthesized by the"one-step"method of sintering with Kaolin tailings as the main raw material,adding a certain proportion of waste glasses and boraxes.The study investigated the effect of different SiC contents on the properties of microcrystalline foam-glass.The glass phase composition,morphology,and volume changes of the microcrystalline foam-glass ceramics were analyzed by testing techniques such as DSC,SEM and XRD.The prepared microcrystalline foam glass is composed of quartz and alumina as the main crystalline phases,with a bulk density of 0.79 g/cm3 and a compressive strength of up to 18.8 MPa.The preparation of microcrystalline foam-glass ceramics had the characteristics of low bulk density,high compressive strength,and good chemical stability.It has wide application value in the architectural ceramics industry,providing a new approach for the reutilization of kaolin tailings.
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