Effect and mechanism of B2O3 on apparent viscosity of slag during smelting of vanadium-titanium magnetite in the Blast Furnace

Author: Lin Yin-he   Wen Yong-cai   Fu Wei-guo   Rao Jia-ting  

Publisher: Edp Sciences

E-ISSN: 2271-3654|113|5|506-506

ISSN: 2271-3646

Source: Metallurgical Research & Technology (formerly Revue de Métallurgie), Vol.113, Iss.5, 2016-08, pp. : 506-506

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Abstract

Considering the low fluidity and the difficulties in separating high Ti-bearing blast furnace slag from hot metal, the effect of B2O3 on apparent viscosity under argon atmosphere was studied from 1340 °C to 1475 °C using Brookfield Rotational Viscometer, Metallographic Microscope, et al. The results showed that the addition of B2O3 could decrease melting temperature of high Ti-bearing blast furnace slag and increased its fluidity. With increasing the amount of B2O3 from 0 to 3%, mass fraction of perovskite in high Ti-bearing blast furnace slag gradually decreased, but four times the mass fraction of anosovite. The Ti(C,N) appeared enrichment in the high Ti-bearing blast furnace slag, and the enrichment changed with the addition of B2O3 increasing.

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