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Assessment of brownmillerite and periclase hydration in chromite ore processing residue at elevated temperature

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dc.contributor.author Wazne, Mahmoud
dc.contributor.author Moon, Deok
dc.contributor.author Dermatas, Dimitris
dc.contributor.author Sanchez, Adriana M.
dc.contributor.author Chrysochoou, Maria
dc.contributor.author Grubb, Dennis G.
dc.date.accessioned 2017-07-26T10:42:47Z
dc.date.available 2017-07-26T10:42:47Z
dc.date.issued 2017-07-26
dc.identifier.uri http://hdl.handle.net/10725/5966
dc.description.abstract Chromite ore processing residue (COPR) is a solid waste that was generated by the high temperature process of chromium extraction from chromite ore using soda ash and lime. The purpose of this study was to evaluate whether brownmillerite and periclase could be transformed into other minerals to understand and predict phase transformation during weathering in COPR. In this study, brownmillerite hydration to hydrogarnets and periclase to brucite in COPR materials were respectively assessed at elevated temperatures (100°C and 200°C) for 30 days because these reactions are very slow at ambient temperatures. The results showed that no apparent phase transformation was observed at 100°C. However, brownmillerite and periclase started dissolving the first day at 200°C, forming hydrogarnets and brucite, and completely dissolving after 15 days. Moreover, hydrogarnets were the main phase after 30 days of reaction. This indicated that the phase transformation could be possible when the initial COPR materials with high content of brownmillerite are exposed to long-term weathering. en_US
dc.language.iso en en_US
dc.publisher ASCE en_US
dc.title Assessment of brownmillerite and periclase hydration in chromite ore processing residue at elevated temperature en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 201205627 en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.identifier.doi https://doi.org/10.1061/40970(309)47 en_US
dc.identifier.ctation Moon, D. H., Dermatas, D., Sanchez, A. M., Chrysochoou, M., Wazne, M., & Grubb, D. G. (2008). Assessment of brownmillerite and periclase hydration in chromite ore processing residue at elevated temperature. In GeoCongress 2008: Geotechnics of Waste Management and Remediation (pp. 375-382). en_US
dc.author.email mahmoud.wazne@lau.edu.lb en_US
dc.conference.date March 9-12, 2008 en_US
dc.conference.pages 375-382 en_US
dc.conference.place New Orleans, Louisiana, United States en_US
dc.conference.title GeoCongress 2008 en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://ascelibrary.org/doi/abs/10.1061/40970%28309%2947?src=recsys en_US
dc.author.affiliation Lebanese American University en_US


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