Study on crystallization kinetics and curing mechanism of the multiple heavy metals in slag glass-ceramics
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In this paper, manganese-containing blast furnace slag (MBFS) was used as the main raw material and Cr2O3 was used asthe nucleating agent to prepare MBFS glass-ceramic by melting method. The influence of multiple heavy metal ions on thecrystallization characteristics, physical and chemical properties of glass-ceramic was studied by adding CuO and ZnO, and theexistence of multiple heavy metal ions in glass-ceramic and its curing effect were determined. The results showed that Cr wasthe key element for crystallization of glass-ceramic, which can enable volume crystallization to occur. The glass-ceramics withdiopside as the main crystalline phase had excellent comprehensive physical and chemical properties. The results of TCLPheavy metal leaching experiments also confirmed that spinel crystal wrapped by diopside and glass phase can produce anexcellent solidification effect on multiple heavy metals.
Abstract
In this paper, manganese-containing blast furnace slag (MBFS) was used as the main raw material and Cr2O3 was used asthe nucleating agent to prepare MBFS glass-ceramic by melting method. The influence of multiple heavy metal ions on thecrystallization characteristics, physical and chemical properties of glass-ceramic was studied by adding CuO and ZnO, and theexistence of multiple heavy metal ions in glass-ceramic and its curing effect were determined. The results showed that Cr wasthe key element for crystallization of glass-ceramic, which can enable volume crystallization to occur. The glass-ceramics withdiopside as the main crystalline phase had excellent comprehensive physical and chemical properties. The results of TCLPheavy metal leaching experiments also confirmed that spinel crystal wrapped by diopside and glass phase can produce anexcellent solidification effect on multiple heavy metals.
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