Abstract:In order to efficiently reuse high titanium blast furnace slag

foam glass-ceramics were produced by simultaneously foaming and crystallizing process at 1000 C

using the slag and waste glass as main raw materials

AlN as foaming agent

borax Na2B4O7•5H2O as fluxing agent. The influence of the additive amount of Na2B4O7•5H2O (4~7wt.%) on the foam glass-ceramics was studied by XRD

SEM and the test of physical and mechanical performance. The results showed that the borax barely affected the crystal phases of the foam glass-ceramics

only different kinds of pyroxene evolving

meaning converting from diposide

hedenbergite

omphacite to augite; With increasing the borax amount

the system softened and the cell wall became compacting. Consequently

the porosity increased

the bulk density

compressive strength and heat conductivity decreased. The optimum comprehensive property of foam glass-ceramics was achieved at 5wt.% fluxing agent.