Journal of MMIJ
Online ISSN : 1884-0450
Print ISSN : 1881-6118
ISSN-L : 1881-6118
Original Paper
Viscosity Measurements of FeO-Fe2O3-SiO2-Al2O3 Slag Melt Under Suppression of Magnetite Formation
Sei KUZUMAKINobuyasu NISHIOKAFumito FUJISHIROHiromichi TAKEBE
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JOURNAL OPEN ACCESS

2021 Volume 137 Issue 11 Pages 110-115

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Abstract

A stabilized zirconia oxygen probe was used to measure the oxygen partial pressure (OPP) at an electrode submerged in a copper slag melt at 1300 . The OPP was controlled in the range of 1010–105 atm owing to the presence or absence of a powdered carbon layer on the slag melt using a high-purity alumina crucible in argon (Ar) gas flow. Under suppression of magnetite formation at an OPP of approximately 1010 atm, the viscosities of the copper slag and FeO-Fe2O3-SiO2-Al2O3 slag melts were measured between 1200 and 1300 . The obtained values were in the range of 1.0×102–7.8×102 mPas. The dependences of total Fe/SiO2 mass ratio and Al2O3 concentration on viscosity were qualitatively interpreted from the aluminosilicate network structure viewpoint.

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