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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 4/2018

05-04-2018

Effects of the Cr2O3 Content on the Viscosity of CaO-SiO2-10 Pct Al2O3-Cr2O3 Quaternary Slag

Authors: Tuo Wu, Yanling Zhang, Fang Yuan, Zhuoqing An

Published in: Metallurgical and Materials Transactions B | Issue 4/2018

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Abstract

The present study experimentally investigates the effect of Cr2O3 on the viscosity of molten slags. The viscosities of CaO-SiO2-10 pct Al2O3-Cr2O3 quaternary slags with two different binary basicities (R, basic slag with R = 1.2 and acidic slag with R = 0.8) were measured by the rotating cylindrical method from 1813 K to 1953 K (1540 °C to 1680 °C). The results showed that the viscosity of both types of slag decreased as the Cr2O3 content increased, but the viscosity of acidic slags exhibited a greater decrease. The slags showed good Newtonian behavior at such high temperatures. Cr2O3 could act as a network modifier to simplify the Si-O-Si tetrahedral structure, as verified by the Raman spectral analysis, which was consistent with the decreasing trend of viscosity. The activation energy of viscous flow decreased slightly with increasing Cr2O3, but increasing the basicity seemed to be more effective in decreasing the viscosity than adding Cr2O3.
previous article Effect of Iron Redox Equilibrium on the Foaming Behavior of MgO-Saturated Slags
next article Experimental Investigation of Gas/Slag/Matte/Tridymite Equilibria in the Cu-Fe-O-S-Si System in Controlled Gas Atmosphere: Experimental Results at 1523 K (1250 °C) and P(SO2) = 0.25 atm

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Metadata
Title
Effects of the Cr2O3 Content on the Viscosity of CaO-SiO2-10 Pct Al2O3-Cr2O3 Quaternary Slag
Authors
Tuo Wu
Yanling Zhang
Fang Yuan
Zhuoqing An
Publication date
05-04-2018
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 4/2018
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-018-1258-z

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