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Analysis and Development of lgbokoda Clay as a Binder for Synthetic Moulding Sand

Loto, C. A. (1988) Analysis and Development of lgbokoda Clay as a Binder for Synthetic Moulding Sand. Analysis and Development of lgbokoda Clay as a Binder' for Synthetic Moulding Sand. pp. 85-97.

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Abstract

Clay obtained from lgbokoda in the southwestern part of Nigeria has been analysed and developed as a binder for synthetic moulding sand. The analysis was compared with the analytical results obtained for the pre-treated bentonite clay imported from the U.S.A. and used by the Nigerian Foundries Ltd. (NFL). X-ray analysis indicated the presence of kaolin, illite and montmorillonite (parent mineral of bentonite), with kaolin having the highest percentage in the lgbokoda clay and montmorillonite was further confirmed by the flame test which shows the existence of exchangeable cations not present in kaolin. The effects of mixing varying amounts of clay, tempering water and sand on moulding properties were investigated. The green and dry strength and shatter index of the mixtures were determined. The green and the dry strength (both in shear and compression) of the lgbokoda test clay, mixed with the sub angular lagoon silica sand and determined at optimum water content, give good values for synthetic moulding sand. The shatter index test shows a decrease in collapsibility as the water content decreases at constant clay addition. lgbokoda clay is more collapsible but less tough than bentonite as shown by the shatter index

Item Type: Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mr Solomon Bayoko
Date Deposited: 18 Aug 2013 10:25
Last Modified: 18 Aug 2013 11:12
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/1298

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