GUAN Yanmei, CHEN Wei, SUN Daosheng
(Anhui Jianzhu University, Hefei 230022, Anhui, China)
Abstract: Basic glasses were prepared by using phosphorus slag and coal gangue as the raw materials. The effects of proportions between the basic glasses and the phosphorus slag on crystallization behaviour, microstructure and various properties of the glass-ceramics were studied, by using X-ray diffraction (XRD), scanning electron microscope (SEM) and physical/chemical property testing methods. It has been showed that wollastonite and cuspidine were the main crystalline phases in the glass-ceramics. With increasing content of phosphorus slag, the compactness of the samples was decreased, together with decrease in density, acid resistance and flexural strength. As the content of phosphorous slag was 84wt.%, the acid and alkali resistance of glass-ceramics were optimized, with bulk density and flexural strength to be 2.65 g•cm3 and 81.9 MPa, respectively.
Key words: phosphorus slag; coal gangue; architectural glass-ceramics; phosphorus slag content