title: Utilization of coal fly ash in the glass-ceramic production.
abstract: Manufacturing the glass-ceramic has been proposed as a useful choice to recycle coal fly ash from power plants. In this work, a glass-ceramic of SiO2-Al2O3-Fe2O3-CaO family was synthesized by mixing 90 wt% of coal fly ash, from a power plant in west of China, with Na2O, and then melted at 1350 degrees C. The ceramization of the obtained glass was carried out at 770 degrees C for 2h. Esseneite and nepheline were found present as major crystal phases. The produced glass-ceramic exhibited good chemical durability as well as good mechanical properties. The toxicity characteristic leaching procedure (TCLP) method found that the glass-ceramic was non-hazardous.
authors.affiliation: College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Wen
authors.initials: W
authors.lastname: Dong
authors.forename: Juan
authors.initials: J
authors.lastname: Li
authors.forename: Liang
authors.initials: L
authors.lastname: Qiao
authors.forename: Jingwu
authors.initials: J
authors.lastname: Zheng
authors.forename: Jiawei
authors.initials: J
authors.lastname: Sheng
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D060729:Coal Ash; D005898:Glass / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry; D052638:Particulate Matter / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D060729:Coal Ash; D019216:Metals, Heavy; D010087:Oxides; D052638:Particulate Matter; D002244:Carbon