Influence of aluminium nitride as a foaming agent on the preparation of foam glass-ceramics from high-titanium blast furnace slag
来源期刊：International Journal of Minerals Metallurgy and Materials2016年第5期
论文作者：Huan Shi Ke-qin Feng Hai-bo Wang Chang-hong Chen Hong-ling Zhou
文章页码：595 - 600
摘 要：To effectively reuse high-titanium blast furnace slag（TS）, foam glass-ceramics were successfully prepared by powder sintering at 1000°C. TS and waste glass were used as the main raw materials, aluminium nitride（AlN） as the foaming agent, and borax as the fluxing agent. The influence of the amount of AlN added（1wt%–5wt%） on the crystalline phases, microstructure, and properties of the produced foam glass-ceramics was studied. The results showed that the main crystal phases were perovskite, diopside, and augite. With increasing AlN content, a transformation from diopside to augite occurred and the crystallinity of the pyroxene phases slightly decreased. Initially, the average pore size and porosity of the foam glass-ceramics increased and subsequently decreased; similarly, their bulk density and compressive strength decreased and subsequently increased. The optimal properties were obtained when the foam glass-ceramics were prepared by adding 4wt% AlN.
Huan Shi1，Ke-qin Feng1，Hai-bo Wang1,2，Chang-hong Chen1，Hong-ling Zhou1
1. School of Manufacturing Science and Engineering, Sichuan University2. School of Materials Engineering, Panzhihua College
摘 要：To effectively reuse high-titanium blast furnace slag（TS）, foam glass-ceramics were successfully prepared by powder sintering at 1000°C. TS and waste glass were used as the main raw materials, aluminium nitride（AlN） as the foaming agent, and borax as the fluxing agent. The influence of the amount of AlN added（1wt%–5wt%） on the crystalline phases, microstructure, and properties of the produced foam glass-ceramics was studied. The results showed that the main crystal phases were perovskite, diopside, and augite. With increasing AlN content, a transformation from diopside to augite occurred and the crystallinity of the pyroxene phases slightly decreased. Initially, the average pore size and porosity of the foam glass-ceramics increased and subsequently decreased; similarly, their bulk density and compressive strength decreased and subsequently increased. The optimal properties were obtained when the foam glass-ceramics were prepared by adding 4wt% AlN.
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