CHARACTERIZATION OF ELECTRICAL PORCELAIN INSULATORS FROM LOCAL CLAYS
DOI:
https://doi.org/10.29121/granthaalayah.v3.i1.2015.3050Keywords:
Clay, Dielectric, Feldspar, Porcelain, Silica, Translucent, VitrificationAbstract [English]
In this thesis, the characterization of electrical porcelain insulators based on local clays has been investigated. Test samples were made by varying the quantities of feldspar and silica required to form a mouldable plastic body with each clay sample. The clay samples were bisque fired which is to 900°C and glazed before it was fired to 1250°C after air-drying. An electrical property such as dielectric strength (breakdown voltage) was determined for each test sample that survived the high temperature. The composition for optimum properties from Ekwulobia and Iva Valley clays each is at composition 3 of 60% clay, 25% feldspar and 15% silica; while for Nawfija clay, the composition for optimum properties was 50% clay, 30% feldspar and 20% silica. Porcelain insulators containing 50-70% clay, 20-30% feldspar and 10-20% silica were found to have requisite properties that make them suitable for domestic production of porcelains insulators from the clay samples studied.
Downloads
References
Velde, B. “ Introduction to Clay Minerals Chemistry, Origins, Uses and Environmental Significance”,
London Chapman and Hall, 1992, pp 164-178.
Onyemaobi, O. O. “Mineral Resources Exploitation, Processing and Utilization” – A Sine Qua Non for
Nigeria’s Metallurgical Industrial Development Inaugural Lecture Series 5 of FUTO, Owerri: FUTO, 2002,
Press.48pp.
Aliyu, A. “Potentials of the Solid Minerals Industry in Nigeria Abuja”:RMRDC.1996, pp. 1-40,63-83, 164
Rado, P. “An Introduction to the Technology of Pottery”, First Edition Oxford: Pergamon (1969), Pp. 76-89.
Olupot, P. W. “Assessment of Ceramic Raw Materials in Uganda for Electrical Porcelain”. Licentiate Thesis
In Material Science, Department of Materials Science and Engineering, Royal Institute of Technology (KTH)
Stockholm, Sweden,2006, Pp. 96-109.
Onaji, P. B. and Usman M, “Development of Slim cast Electrical Porcelain body: Borno Plastic clay”,
Nigeria Journal of Engineering (NJE),1988, Vol. 5, No 2, pp89-96.
Khanna, O. P. “Material Science and Metallurgy” Revised and Enlarged edition. Dhamput RAI Publications
(P) Ltd. New Delhi India 2001, Pp. 161-163.
Dana, K.; DAS, S. and DAS, K.S.: “Effect of Substitution of Fly Ash for silica in Triaxial Kaolin silica
feldspar System”. Journal of the European Ceramic Society 24, Pp. 3169-3175(2004). DOI: https://doi.org/10.1016/j.jeurceramsoc.2003.10.008
Anih L.U. “Indigenous manufacturer and Characterization of Electrical Porcelain Insulator”
Nigerian Journal of Technology, 2005, Vol. 24,No.1.
Reed, J. S.. Introduction to the Principles of Ceramic Processing New York: John Wiley, 1988, Chapters 3,
-7.
Downloads
Published
How to Cite
Issue
Section
License
With the licence CC-BY, authors retain the copyright, allowing anyone to download, reuse, re-print, modify, distribute, and/or copy their contribution. The work must be properly attributed to its author.
It is not necessary to ask for further permission from the author or journal board.
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.