Application of Nkwo-Alaike Clay for the Production of Ceramic Wares Using Cullet as Sintering AID
Journal Title: American journal of Engineering Research - Year 2016, Vol 5, Issue 2
Abstract
Nkwo-Alaike clay which was collected from Imo State, South-East Nigeria, was characterized and cullet was added as sintering aid (flux) in order to decrease the firing temperature thereby saving cost of fuel utilization. The cullet collected were milled into powder and batches containing mixture of 10%, 20%, 30% cullet powder with clay were prepared and moulded under 30MPa in order to evaluate the effect of cullet powder on sintering of the ceramic products. The samples produced were gradually fired to 900-1050 oC with soaking time of 1hour at 5oC/min. Physical and thermal properties of the samples were investigated, from the results, the composition containing 20% cullet which was fired at1050°C before its maturity had the best mechanical strength (13.80–28.61MPa) and no pinholes or cracks were recorded. The overall result show that, the firing temperature was reduced from1150oC to 1050 oC, making it possible to use the Nkwo-Alaike clay with cullet addition for the production of wall or floor tiles at 20% addition.
Authors and Affiliations
A. S. Ogunro1 ,, F. I. Apeh2 ,, O. C. Nwannenna3, A. E. Peter4
Keywords
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