Bulletin of the Chinese Ceramic Society, Volume. 41, Issue 11, 3834(2022)

Preparation of Fluorapatite Based GlassCeramics from Fluorite Tailings and Waste Glass by Sintering Method

WANG Rui... LI Hongwei, ZHAO Wei and GUO Hongwei |Show fewer author(s)
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    In this work, glassceramics 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 glassceramics were characterized by Xray 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 glassceramics under different ratios were characterized by Factsage software. And the flexural strength, acid and alkali resistance of glassceramics were tested. The results show that the goodquality glassceramics 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 glassceramics. At a ratio (mass fraction) of 30%FT, 60%WG and 10%CS, glassceramics have not only good strength but also good acid and alkali resistance. The glassceramics 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 glassceramics 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 GlassCeramics from Fluorite Tailings and Waste Glass by Sintering Method[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(11): 3834

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    Paper Information

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    Received: May. 26, 2022

    Accepted: --

    Published Online: Dec. 26, 2022

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    DOI:

    CSTR:32186.14.

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