Thermal characteristic of limonite ore upon calcination and reduction

Eni Febriana, Azwar Manaf, A. B. Prasetyo, W. Mayangsari

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Thermal characteristics of the limonite laterite ore types have been studied using TG / DTA. There are four endothermic peaks at 250, 646, 900, and 1023°C with a total mass loss of 10.07wt%. These four peaks correspond to the XRD results on samples calcined at 600-1000°C. Analysis of TG / DTA to the mixture of limonite and graphite showed two endothermic reaction peaks at 641 and 900°C and an exothermic peak at 1180°C. Reduction of the limonite-graphite mixture was done by heating at 800-1100°C for 1 hour, and the reduced samples were analyzed using XRD. The results indicate that the reduction process proceed completely at higher temperatures, indicated by the increasing intensity of kamacite and Fe metal phase, and the decrease of peak intensity of carbon due to reaction with metal oxides. At 1100°C, intensity of Fe-metal decreased due to sintering of Fe which may occur because the temperature was too high.

Original languageEnglish
Title of host publicationProceedings of the International Seminar on Metallurgy and Materials, ISMM 2017
Subtitle of host publicationMetallurgy and Advanced Material Technology for Sustainable Development
EditorsM. Yunan Hasbi, Daniel Panghihutan Malau, Dhyah Annur, M. Ikhlasul Amal, Satrio Herbirowo, Yulinda Lestari
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416697
DOIs
Publication statusPublished - 15 May 2018
Event1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017 - Jakarta, Indonesia
Duration: 24 Oct 201725 Oct 2017

Publication series

NameAIP Conference Proceedings
Volume1964
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017
CountryIndonesia
CityJakarta
Period24/10/1725/10/17

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