Effectiveness of Teflon as roller material for a prototype rice processing machine

Abstract

ABSTRACT

 The main aim of this research was to assess the effectiveness of using Teflon material in search of locally available quality/effective roller material for a prototype rice roller dehusking /destoning machine developed in Nigeria making use of four locally cultivated rice varieties. This required determination of the effectiveness of Teflon material as roller for the developed prototype dehusker/destoner.  Microsoft Excel 2007 and Minitab 16 were used to analyze the ANOVA of two main factors (paddy varieties and moisture content). The dehusker cleaning efficiency was found to be 94.73 %, coefficient of dehusking was 0.63, coefficient of wholeness was 0.85, dehusking efficiency was 50.54 %, dehusking capacity was 10.56 kg/h. Also the effect of moisture content and test paddy on coefficient of wholeness and dehusking efficiency were significant at p ≤ 0.05, while only moisture content effect was significant on cleaning efficiency. Further search for better roller material to replace the Teflon material to improve the prototype dehusking performance for different rice varieties was recommended.