Kinetics of reduction of iron ore—coal pellets |
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Authors: | Sarkar S B Ray H S Chatterjee I |
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Institution: | (1) Metallurgical Engineering Department, Indian Institute of Technology, 721302 Kharagpur, India |
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Abstract: | Kinetic data on the reduction of iron ore-coal pellets are compared with similar data for lump ore. It is shown that, when ore and coal are mixed intimately, the reduction reactions are accelerated considerably. Ore-coal pellets offer some additional advantages, as discussed in the text.It is shown that the kinetics of ore-coal reduction can be studied by using a pseudo kinetic parameter,f (fraction of reaction), defined as the instantaneous weight loss divided by the maximum possible weight loss. Plots off versust have been analysed to establish the kinetic equations and evaluate the kinetic parameters.
Zusammenfassung Die kinetischen Daten der Reduktion von Eisenerz-Kohle-Pellets wurde mit ähnlichen Daten von Stückerz verglichen. Es wurde gezeigt, daß die Reduktionsreaktionen im Falle einer intensiven Vermischung von Erz und Kohle erheblich beschleunigt werden. Erz-Kohle-Pellets besitzen einige zusätzliche Vorteile, auf die im Text näher eingegangen wird. Es wurde gezeigt, daß die Kinetik der Erz-Kohle-Reduktion mit Hilfe eines pseudokinetischen Parametersf (Reaktionsbruch) untersucht werden kann, der als Quotient aus aktuellem Gewichtsverlust und maximal möglichem Gewichtsverlust definiert wird. Zur Bestimmung der kinetischen Gleichungen und der Berechnung der kinetischen Parameter wurde einf–t Diagramm ausgewertet.
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![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![rcy](/content/n102um237h0wl8v0/xxlarge1088.gif) ![vcy](/content/n102um237h0wl8v0/xxlarge1074.gif) ![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![scy](/content/n102um237h0wl8v0/xxlarge1089.gif) . ![Gcy](/content/n102um237h0wl8v0/xxlarge1043.gif) ![rcy](/content/n102um237h0wl8v0/xxlarge1088.gif) ![acy](/content/n102um237h0wl8v0/xxlarge1072.gif) ![fcy](/content/n102um237h0wl8v0/xxlarge1092.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![chcy](/content/n102um237h0wl8v0/xxlarge1095.gif) ![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![scy](/content/n102um237h0wl8v0/xxlarge1089.gif) ![kcy](/content/n102um237h0wl8v0/xxlarge1082.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![zcy](/content/n102um237h0wl8v0/xxlarge1079.gif) ![acy](/content/n102um237h0wl8v0/xxlarge1072.gif) ![vcy](/content/n102um237h0wl8v0/xxlarge1074.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) 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![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![ncy](/content/n102um237h0wl8v0/xxlarge1085.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![kcy](/content/n102um237h0wl8v0/xxlarge1082.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![ncy](/content/n102um237h0wl8v0/xxlarge1085.gif) ![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![tcy](/content/n102um237h0wl8v0/xxlarge1090.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![scy](/content/n102um237h0wl8v0/xxlarge1089.gif) ![kcy](/content/n102um237h0wl8v0/xxlarge1082.gif) ![icy](/content/n102um237h0wl8v0/xxlarge1080.gif) ![pcy](/content/n102um237h0wl8v0/xxlarge1087.gif) ![acy](/content/n102um237h0wl8v0/xxlarge1072.gif) ![rcy](/content/n102um237h0wl8v0/xxlarge1088.gif) ![acy](/content/n102um237h0wl8v0/xxlarge1072.gif) ![mcy](/content/n102um237h0wl8v0/xxlarge1084.gif) ![iecy](/content/n102um237h0wl8v0/xxlarge1077.gif) ![tcy](/content/n102um237h0wl8v0/xxlarge1090.gif) ![rcy](/content/n102um237h0wl8v0/xxlarge1088.gif) ![ocy](/content/n102um237h0wl8v0/xxlarge1086.gif) .
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