利用磷渣和煤矸石制备建筑微晶玻璃的研究

Preparation of Architectural Glass-Ceramics from Phosphorus Slag and Coal Gangue

以磷渣和煤矸石为原料经高温熔融制备出基础玻璃,研究基础玻璃与外掺磷渣间的比例关系对建筑微晶玻璃性能的影响,实现废弃磷渣资源利用最大化。结果表明,以磷渣和煤矸石为原料的微晶玻璃主晶相为硅灰石和枪晶石。随着体系中磷渣用量的增加,试样的体积密度、抗折强度和耐酸性均降低,当磷渣用量为84wt%时,试样的耐酸碱性最佳,其体积密度和抗弯强度分别达到2.65 g·cm^-1和81.9 MPa。

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 proper ties 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 84 wt.%,the acid and alkal i resistance of glass-ceramics were optimized,with bulk density and flexural strength to be 2.65 g·cm^-3 and 81.9 MPa,respectively.