Wu L.-H.,Hebei Vocational and Technical Institute of Building Material |
Chen F.,Qinhuangdao Glass Industry Research and Design Institute |
Li H.-Q.,Baoji University of Arts And Sciences
Gongneng Cailiao yu Qijian Xuebao/Journal of Functional Materials and Devices | Year: 2010
The crystallization process and kinetics of ultralow-expansion lithium aluminosilcate glass ceramics were investigated using differential scanning calorimetric (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM) and other measuring technologies, and the effects of phosphate on the crystallization mechanism and structure of glass ceramics were analyzed. The results show that the introduction of phosphorous can influence the glass phase separation and phase transition process. On the one hand, phosphorus pentoxide can be as effective nucleation induction agent to result in phase separate, which is beneficial to the nucleation and crystal growth; on the other hand, it can increase the crystallization active energy (E), make glass network structure rearrange difficultly, and restrain the grain growth.
Wu L.,Hebei Vocational and Technical Institute of Building Material |
Chen F.,Hebei Vocational and Technical Institute of Building Material |
An X.,Hebei Vocational and Technical Institute of Building Material
Naihuo Cailiao/Refractories | Year: 2010
Advantages of oxy-fuel combustion furnaces were introduced such as saving fuel, decreasing NOx emission, reducing pollution, improving glass quality, increasing flame temperature, melting ability and output of melting furnaces, reducing furnace cost, and prolonging life. Corrosion of lots of alkali vapor and the increase of water vapor in oxy-fuel combustion glass melting furnaces to refractories for key parts such as breast wall, pool wall, and crown were analyzed. Refractories choice for oxy-fuel combustion glass melting furnaces and application of refractories in 600 t · d -1 float glass melting furnace were also analyzed. The production of high quality float glass and special glass with high value-added should adopt advanced combustion and glass melting technical process. At last, the prospect of refractories in oxy-fuel combustion glass melting furnaces was performed.