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Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/773

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contributor.authorKumar, M-
contributor.authorPatel, S K-
date.accessioned2009-02-25T05:42:07Z-
date.available2009-02-25T05:42:07Z-
date.issued2008-
identifier.citationMineral Processing and Extractive Metallurgy Review, Vol 29, Iss 3 , P 258 - 273en
identifier.urihttp://dx.doi.org/10.1080/08827500801997902-
identifier.urihttp://hdl.handle.net/2080/773-
descriptionCopyright for the published paper belongs to Taylor and Francisen
description.abstractStudies on chemical and physical properties ( proximate analysis, sulphur content, reactivity, iron ore reduction potential, caking index and ash fusion temperatures) of coals, procured from sixteen different mines of Orissa, were undertaken for their judicial selection in Indian sponge iron plants. These coals were found to have low sulphur (range : 0.40 – 0.66 %) and moderate to high ash (range : 22 – 53 %) contents. The results indicated no caking characteristic in all the coals except Basundhara. Majority of the studied coal ashes were found to have higher fusion temperatures (ST: 1349 – 15470C; HT: 1500 – 16630C; and FT: 1510 – 17010C). An increase in fixed carbon content in the coal char, in general, led to decrease in its reactivity towards CO2, and majority of the chars exhibited significantly higher reactivities (> 4.0 cc of CO/g.sec). Further reduction studies in coal chars at 9000C indicated an increase in the degree of reduction of fired hematite iron ore pellets with increase of char reactivity and reduction time. The authors recommend the utilization of majority of the studied coals as such and some of them (Lakhanpur, Samleshwari, Orient OC– 4 and Dhera coals) after blending or beneficiation.en
format.extent301366 bytes-
format.mimetypeapplication/pdf-
language.isoen-
publisherTaylor and Francisen
subjectash fusion temperaturesen
subjectcaking indexen
subjectcoals and charsen
subjectcompositionen
subjectiron oreen
subjectreactivityen
titleCHARACTERISTICS OF INDIAN NON-COKING COALS AND IRON ORE REDUCTION BY THEIR CHARS FOR DIRECTLY REDUCED IRON PRODUCTIONen
typeArticleen
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