The fly ash of class C for ceramic technology

Construmat 2018

Sokolar, R.^1 ; Nguyen, M.^1

Institute of Technology of Building Materials and Components, Brno University of Technology, Faculty of Civil Engineering, Veveri 331/95, Brno

602 00, Czech Republic^1

关键词: Ceramic bodies;    Ceramic technologies;    Class C fly ashes;    Fluxing agents;    High-content;    Soaking time;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/385/1/012053/pdf
DOI  :  10.1088/1757-899X/385/1/012053

来源: IOP

【 摘 要 】

The properties of different Czech fluidized fly ashes FFA (class C fly ash according to ASTM C618 12a with high content of CaO in the form of anhydrite primarily) and emisions of SO2 in flue gas during the firing of FFA are discussed. The decomposition of anhydrite CaSO4 was observed during the soaking time at 1200 °C during the firing of dry pressed bodies based on pure fluidized fly ash. The effect od fluidized fly ashes admixtures on the properties of ceramic bodies is as fluxing agent and the source of CaO for the creation of anorthite in the fired ceramic body. The properties of domestic fluidized fly ashes in connection with their utilization in ceramic technology are described.