关键词: 高炉渣;熔化性能;玻璃;晶核剂

Abstract: The main chemical compositions of the blast furnace slag are very similar to those of glass. During glass-ceramic was prepared from blast furnace slag(70%)as the main raw material by melting method,and the composition of the basic glass was adjusted with a amount of pure chemical reagents,the influence of nucleation agents Cr2O3and Fe2O3on the melting properties of the glass was studied through experiments.The results show that the melting temperature of basic glass gradually increases while 0.5%-2.5% Cr2O3is added, but the melting temperature gradually decreases when 1.0%-3.0% Fe2O3is added.When the multiple nucleation agent composed of 0.5%-2.5%Cr2O3and 1.0%-3.0%Fe2O3is used,whose total amount is controlled at 3.5%,the effects of Cr2O3and Fe2O3on the melting properties of the glass can cancel each other.In addition, the free running temperature obviously decreases with increase of Cr2O3and Fe2O3.So,the temperature should be controlled higher than 1360 ℃ in order to ensure molten glass to cast smoothly.

Key words: blast furnace slag;melting property;glass;nucleating agent