Persistent Link:
http://hdl.handle.net/10150/291694
Title:
The effect of particle size on the reduction of ilmenite
Author:
Marathay, Prashant Arvind, 1965-
Issue Date:
1994
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The effect of particle size on ilmenite (FeTiO₃) reduction was studied by experimentally determining the intrinsic activation energy and modeling the data using a shrinking core model. The model accounted for both kinetics and ash diffusion control and allowed for a variable diffusivity as a function of conversion. The intrinsic activation energy was determined by reducing ilmenite particles ranging from 60 to 400 mesh with H₂ and CO partial pressures between .131 and .156 atm over a temperature range of 812 to 1173°C. The activation energy for hydrogen reduction was found to be 22.3 kcal/mol and the activation energy for carbon monoxide reduction was found to be 16.1 kcal/mol.
Type:
text; Thesis-Reproduction (electronic)
Keywords:
Engineering, Chemical.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Chemical Engineering
Degree Grantor:
University of Arizona
Advisor:
Shadman, Farhang

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_US
dc.titleThe effect of particle size on the reduction of ilmeniteen_US
dc.creatorMarathay, Prashant Arvind, 1965-en_US
dc.contributor.authorMarathay, Prashant Arvind, 1965-en_US
dc.date.issued1994en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe effect of particle size on ilmenite (FeTiO₃) reduction was studied by experimentally determining the intrinsic activation energy and modeling the data using a shrinking core model. The model accounted for both kinetics and ash diffusion control and allowed for a variable diffusivity as a function of conversion. The intrinsic activation energy was determined by reducing ilmenite particles ranging from 60 to 400 mesh with H₂ and CO partial pressures between .131 and .156 atm over a temperature range of 812 to 1173°C. The activation energy for hydrogen reduction was found to be 22.3 kcal/mol and the activation energy for carbon monoxide reduction was found to be 16.1 kcal/mol.en_US
dc.typetexten_US
dc.typeThesis-Reproduction (electronic)en_US
dc.subjectEngineering, Chemical.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineChemical Engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorShadman, Farhangen_US
dc.identifier.proquest1358520en_US
dc.identifier.bibrecord.b320753529en_US
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