Phase equilibria in the system "MnO"-CaO-SiO2-Al2O3-K2O relevant to manganese smelting slags

Zhao, B., Jak, E. and Hayes, P. C. (2008) Phase equilibria in the system "MnO"-CaO-SiO2-Al2O3-K2O relevant to manganese smelting slags. International Journal of Materials Research, 99 8: 888-899. doi:10.3139/146.101717

Author Zhao, B.
Jak, E.
Hayes, P. C.
Title Phase equilibria in the system "MnO"-CaO-SiO2-Al2O3-K2O relevant to manganese smelting slags
Formatted title
Phase equilibria in the system "MnO"-CaO-SiO2-Al2O3-K2O relevant to manganese smelting slags
Journal name International Journal of Materials Research   Check publisher's open access policy
ISSN 1862-5282
Publication date 2008-08-01
Year available 2008
Sub-type Article (original research)
DOI 10.3139/146.101717
Open Access Status
Volume 99
Issue 8
Start page 888
End page 899
Total pages 12
Editor Wolfgang Gust
Holger Pfaff
Place of publication Munich, Germany
Publisher Carl Hanser Verlag
Language eng
Subject 84 Mineral Resources (excl. Energy Resources)
0904 Chemical Engineering
Formatted abstract
K2O introduced with manganese ore is redistributed by evaporation and condensation within submerged arc ferromanganese smelting furnaces. To characterise the phase equilibria relevant to these slags experimental studies have been carried out to determine pseudo-ternary sections of the form "MnO"–CaO–(SiO2 + Al2O3) with a fixed Al2O3/SiO2 weight ratio of 0.65 and 6.0 wt.% K2O for temperatures in the range 1523–1673 K. It was found that the presence of K2O in the slag decreases liquidus temperatures relative to those of K2O-free slags in the anorthite and gehlenite primary phase fields at low MnO concentration; at higher MnO concentration however the KAlSiO4 and KAlSi2O6 phases are formed maintaining the liquidus above 1500 K. The manganosite primary phase field is expanded in the direction of increased (Al2O3 + SiO2) and the liquidus temperatures in the manganosite primary phase field are increased significantly with the presence of K2O in the slag.
Keyword Slag
Phase equilibria
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Editors are guest editors

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
Excellence in Research Australia (ERA) - Collection
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Created: Sat, 18 Apr 2009, 00:51:46 EST by Gail Smith on behalf of Mining and Minerals Process Engineering