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Development And Performance Evaluation Of Rice Destoning Machine
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ABSTRACT
A motorized rice de-stoning machine was designed, fabricated and evaluated for performance. The traditional method of rice de-stoning machine characterized with a lot of deficiency in terms local rice containing smaller stones during de-stoning operation. A lot of energy is expended in solving the problem of operation. The rice de-stoning consists of the following part: Hopper, Vibrating Sieve, Machine Frame, Pulley, Eccentric Shaft, and Blower. The factors investigated were feed rate (500g/min) and variety off rice (Bokola, Kodoqiche, AlhajiA’aba). The result of the evaluation reveals that in Stone Separation Efficiency the third variety has the highest efficiency of (77.3%) and the first variety has the lowest efficiency of 72.6%, while in Rice separation efficiency the third variety also has the highest efficiency of 81.0% and the second variety has the lowest efficiency of 79.0%, the Impurity levels after separation are 7.8%, 7.5% and 6.5% respectively, the Tray losses remains the same. The rice de-stoning machine was powered by 1hp electric motor and the cost of production was estimated to be 108,700.
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APPENDIX A - [ Total Page(s): 1 ]APPENDIX A ... Continue reading---
APPENDIX B - [ Total Page(s): 1 ]APPENDIX B ... Continue reading---
TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTSTitle page Certification Dedication Acknowledgement Abstract Table of content CHAPTER ONE1. INTRODUCTION 1.1 Background of the study 1.2 Aim and Objective of the project 1.3 Justification of the project 1.4 Scope of the project CHAPTER TWO2. LITTERATEUR REVIEW 2.1 De-stoning of rice 2.2 Rice production in Nigeria 2.3 Rice processing 2.4 Traditiona ... Continue reading---
CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONE1. INTRODUCTION1.1 Background of the studyRice (Oryza sativa) is a cereal belonging to the Gramineae, a large monocotyledonous family of some 600 genera and around 10,000 species (Wibberley, 1989). It is valued as the most important staple food for over half of the world population (International Year of Rice, 2004) and ranks third after wheat and maize in production on world ... Continue reading---
CHAPTER TWO - [ Total Page(s): 5 ] ... Continue reading---
CHAPTER THREE - [ Total Page(s): 9 ]Where, D = maximum diameter of rice grain size (2.3mm); and Câ‚’ = coefficient of opening (3.5). Therefore, d = 1.9mm. Motor power, = 0.37KW Motor speed, = 1400rpm The velocity of the motor, ... Continue reading---
CHAPTER FOUR - [ Total Page(s): 2 ]CHAPTER FOURRESULTS AND DISCUSSION4.1 Results The results of the experimental raw data of physical properties of the three varieties of the rice selected (Bokola, Kodoqiche, AlhajiA’aba (Orizaglaberrima) where presented in appendix A. The raw data obtained from the rice de-stoner is as shown in appendix B. The average values of physical propertiesobtained from the three varieties is as presented in table 4.1. ... Continue reading---
CHAPTER FIVE - [ Total Page(s): 1 ]CHAPTER FIVECONCLUSION AND RECOMMENDATION5.1 ConclusionThe development and performance evaluation of a rice destining machine was successfully carried out with this work with average impurity level attained as 7.8, average rice separation efficiency as 81.0%, average stone efficiency as 77.3% and the average tray loss as 14.8%. The machine was tested and found partially capable of de-stoning rice due to losses during the testing.5.2 RecommendationsThe rice de-stoning machine designed ... Continue reading---
REFRENCES - [ Total Page(s): 1 ]REFERENCESAdewumi, B. A. (1996). Physical and Mechanical Properties of Rice Varieties. Applied Tropical Agriculture,1,24-28.Agric News, Rice is Life. International Year of Rice, 2004Declaration,vol. 1, no. 2,Bayelsa State Ministry of Agriculture &Natural Resources,2003.Akande T. The Rice Sector in Nigeria, United Nation Crop Project (UNCP) Country Agricultural Project on Trade Liberalization in Agricultural Sector and the Environment, Geneva, Switzerland, 2003.Basorun J. O. “Expository ana ... Continue reading---
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APPENDIX A - [ Total Page(s): 1 ]APPENDIX A ... Continue reading---
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