Glass–ceramic from mixtures of bottom ash and fly ash |
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| Authors: | Dinh Hieu Vu Kuen-Sheng Wang Jung-Hsing Chen Bui Xuan Nam Bui Hoang Bac |
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| Institution: | 1. Faculty of Mining, Hanoi University of Mining and Geology, Dong Ngac, Tu Liem, Hanoi, Viet Nam;2. Graduate Institute of Environmental Engineering, National Central University, No. 300, Jhongda Rd., Jhongli, Taoyuan 32001, Taiwan;3. Faculty of Geology, Hanoi University of Mining and Geology, Dong Ngac, Tu Liem, Hanoi, Viet Nam;1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;2. School of Shagang Iron and Steel, Soochow University, Suzhou 215021, PR China;3. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, PR China;4. School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243002, PR China;1. Henan Key Laboratory Cultivation Base of Mine Environmental Protection and Ecological Remediation, Henan Polytechnic University, Jiaozuo 454000, Henan, China;2. Institute of Resource and Environment, Henan Polytechnic University, Jiaozuo 454000, Henan, China;3. Jiaozuo Environmental Protection Agency, Jiaozuo 454000, Henan, China;4. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China;5. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;1. School of Environment, South China Normal University, Guangzhou, 510006, PR China;2. Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, PR China;1. Laboratoire Géomateriaux et Environnement (LGE, EA 4508), 5 Bd Descartes Université Paris Est 77454 Marne-la-Vallée (UPEM), Champs-sur-Marne, France;2. Laboratoire Interfaces et Systèmes Electrochimiques (LISE), Université Pierre et Marie Curie (UPMC), Paris, France |
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| Abstract: | Along with the gradually increasing yield of the residues, appropriate management and treatment of the residues have become an urgent environmental protection problem. This work investigated the preparation of a glass–ceramic from a mixture of bottom ash and fly ash by petrurgic method. The nucleation and crystallization kinetics of the new glass–ceramic can be obtained by melting the mixture of 80% bottom ash and 20% fly ash at 950 °C, which was then cooled in the furnace for 1 h. Major minerals forming in the glass–ceramics mainly are gehlenite (Ca2Al2SiO7) & akermanite (Ca2MgSiO7) and wollastonite (CaSiO3). In addition, regarding chemical/mechanical properties, the chemical resistance showing durability, and the leaching concentration of heavy metals confirmed the possibility of engineering and construction applications of the most superior glass–ceramic product. Finally, petrurgic method of a mixture of bottom ash and fly ash at 950 °C represents a simple, inexpensive, and energy saving method compared with the conventional heat treatment. |
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