title: Glass-ceramic from mixtures of bottom ash and fly ash.
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 1h. Major minerals forming in the glass-ceramics mainly are gehlenite (Ca(2)Al(2)SiO(7)) & akermanite (Ca(2)MgSiO(7)) and wollastonite (CaSiO(3)). 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.
authors: Faculty of Mining, Hanoi University of Mining and Geology, Dong Ngac, Tu Liem, Hanoi, Viet Nam. vudinhhieu@gmail.com
authors: Dinh Hieu
authors: DH
authors: Vu
authors: Kuen-Sheng
authors: KS
authors: Wang
authors: Jung-Hsing
authors: JH
authors: Chen
authors: Bui Xuan
authors: BX
authors: Nam
authors: Bui Hoang
authors: BH
authors: Bac
mesh_terms: D002516:Ceramics / Q000737:chemistry*; D060729:Coal Ash / Q000737:chemistry*; D003246:Conservation of Energy Resources; D004787:Environmental Pollution / Q000517:prevention & control; D005898:Glass / Q000737:chemistry*; D017745:Incineration; D008422:Materials Testing; D052638:Particulate Matter; D014866:Waste Products / Q000032:analysis*
chemical_list: D060729:Coal Ash; D052638:Particulate Matter; D014866:Waste Products