Bulletin of the Chinese Ceramic Society, Volume. 41, Issue 11, 3834(2022)
Preparation of Fluorapatite Based GlassCeramics from Fluorite Tailings and Waste Glass by Sintering Method
In this work, glassceramics were prepared by sintering method with fluorite tailings (FT) and waste glass (WG) as raw materials and calcium silicate (CS) as additive. The crystallization characteristics and morphology of glassceramics were characterized by Xray diffracometer and scanning electron microscope. The size and number of grains were counted by Image Pro Plus. The changes in the phase and liquid phase of high temperature during the preparation of glassceramics under different ratios were characterized by Factsage software. And the flexural strength, acid and alkali resistance of glassceramics were tested. The results show that the goodquality glassceramics with fluorapatite (Ca5P3O12F) as the main crystalline phase are obtained in the temperature range of 1 060 ℃ to 1 180 ℃. With the increase of CS ratio, the grain refinement of the main crystalline phase—fluorapatite is obtained, which is beneficial to improve the mechanical property of glassceramics. At a ratio (mass fraction) of 30%FT, 60%WG and 10%CS, glassceramics have not only good strength but also good acid and alkali resistance. The glassceramics designed in this work provide an economic and novel way of recycling FT, which is of great practical significance to reduce the production cost of glassceramics and promote the development of recycling economy of solid waste resource.
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WANG Rui, LI Hongwei, ZHAO Wei, GUO Hongwei. Preparation of Fluorapatite Based GlassCeramics from Fluorite Tailings and Waste Glass by Sintering Method[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(11): 3834
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Received: May. 26, 2022
Accepted: --
Published Online: Dec. 26, 2022
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CSTR:32186.14.