Studies of calciomagnetite phase by means of thermal analysis |
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Authors: | J Orewczyk S Jasieńska |
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Institution: | (1) University of Mining and Metallurgy, Cracow, Poland |
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Abstract: | Iron oxides doped with calcium occur in such natural metallurgical materials as sinters and lumps for the blast furnace process. In this work the Ca-doped magnetite phase Fe3–y
Ca
y
O4 with 0<y 0.55 was produced and studied as a pattern phase for investigation of the magnetite phase in sinters.The synthesis process was studied by means of simultaneous thermal analysis, while the synthesized products were studied by diffraction analysis, scanning and optical microscopy, and spectral analysis in microareas.The solubility limits for Ca in magnetite were estimated, and an explanation of the shapes of the thermal curves was given.
Zusammenfassung Mit Kalzium versetzte Eisenoxide kommen in natürlichen Metallurgiematerialien wie z. B. Sintererzen und Erzbrocken für die Hochofenverhüttung vor. In vorliegender Arbeit wird die kalziumversetzte Magnetitphase Fe3–y
Ca
y
O4 mit 0<y 0.55 hergestellt und als Modellphase zur Untersuchung von Magnetitsintererzen studiert. Der Syntheseprozeß wurde mittels gleichzeitiger Thermoanalysen, die synthetisierten Produkte durch Diffraktionsanalysen, optischer und Scanningmikroskopie sowie Spektralanalyse im Mikrobereich untersucht. Die Löslichkeitsgrenzen von Kalzium in Magnetit wurden abgeschätzt und eine Erklärung für den Verlauf der thermischen Kurven gegeben.
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Ca
y
O4 0<y 0,55 ![kcy](/content/vr28g85812u65n1l/xxlarge1082.gif) ![ocy](/content/vr28g85812u65n1l/xxlarge1086.gif) ![tcy](/content/vr28g85812u65n1l/xxlarge1090.gif) ![ocy](/content/vr28g85812u65n1l/xxlarge1086.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![acy](/content/vr28g85812u65n1l/xxlarge1072.gif) ![bcy](/content/vr28g85812u65n1l/xxlarge1073.gif) ![ycy](/content/vr28g85812u65n1l/xxlarge1099.gif) ![lcy](/content/vr28g85812u65n1l/xxlarge1083.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![scy](/content/vr28g85812u65n1l/xxlarge1089.gif) ![scy](/content/vr28g85812u65n1l/xxlarge1089.gif) ![lcy](/content/vr28g85812u65n1l/xxlarge1083.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![dcy](/content/vr28g85812u65n1l/xxlarge1076.gif) ![vcy](/content/vr28g85812u65n1l/xxlarge1074.gif) ![acy](/content/vr28g85812u65n1l/xxlarge1072.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![kcy](/content/vr28g85812u65n1l/xxlarge1082.gif) 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![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![tcy](/content/vr28g85812u65n1l/xxlarge1090.gif) ![gcy](/content/vr28g85812u65n1l/xxlarge1075.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) -![dcy](/content/vr28g85812u65n1l/xxlarge1076.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![fcy](/content/vr28g85812u65n1l/xxlarge1092.gif) ![fcy](/content/vr28g85812u65n1l/xxlarge1092.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![acy](/content/vr28g85812u65n1l/xxlarge1072.gif) ![kcy](/content/vr28g85812u65n1l/xxlarge1082.gif) ![tscy](/content/vr28g85812u65n1l/xxlarge1094.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![ocy](/content/vr28g85812u65n1l/xxlarge1086.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![ycy](/content/vr28g85812u65n1l/xxlarge1099.gif) ![acy](/content/vr28g85812u65n1l/xxlarge1072.gif) 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![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![vcy](/content/vr28g85812u65n1l/xxlarge1074.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![dcy](/content/vr28g85812u65n1l/xxlarge1076.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![ncy](/content/vr28g85812u65n1l/xxlarge1085.gif) ![tcy](/content/vr28g85812u65n1l/xxlarge1090.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![pcy](/content/vr28g85812u65n1l/xxlarge1087.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![acy](/content/vr28g85812u65n1l/xxlarge1072.gif) ![tscy](/content/vr28g85812u65n1l/xxlarge1094.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![fcy](/content/vr28g85812u65n1l/xxlarge1092.gif) ![ocy](/content/vr28g85812u65n1l/xxlarge1086.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![tcy](/content/vr28g85812u65n1l/xxlarge1090.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![mcy](/content/vr28g85812u65n1l/xxlarge1084.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![chcy](/content/vr28g85812u65n1l/xxlarge1095.gif) ![iecy](/content/vr28g85812u65n1l/xxlarge1077.gif) ![scy](/content/vr28g85812u65n1l/xxlarge1089.gif) ![kcy](/content/vr28g85812u65n1l/xxlarge1082.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![kcy](/content/vr28g85812u65n1l/xxlarge1082.gif) ![rcy](/content/vr28g85812u65n1l/xxlarge1088.gif) ![icy](/content/vr28g85812u65n1l/xxlarge1080.gif) ![vcy](/content/vr28g85812u65n1l/xxlarge1074.gif) ![ycy](/content/vr28g85812u65n1l/xxlarge1099.gif) .
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