Performance evaluation of a rice cleaning and grading machine

Okunola, Abiodun A. and Isaac-Bamgboye, A Performance evaluation of a rice cleaning and grading machine. CIGR Section VI International Technical Symposium. pp. 1-4.

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Rice (Oryza sativa L.), that are locally produced and processed in Nigeria is characterized with high percentage of broken grains and impurities which impairs its quality and attracts low market value. To overcome this predicament, an appropriate technology machine was designed A three sieve cleaner-grader machine developed by the authors was tested for performance with a vibration speed of 240 r.p.m. Three rice varieties was used for testing the milling qualities such as milled rice yield, head rice yield and brokens at the moisture content of 12.2% ±1.4 An air blast of 4.8ms 1 was utilized to separate light materials while apertures diameter of 3, 5.5 and 7mm were selected for bottom, intermediate and top sieves to effect grading of whole kernels. Milled rice fed into the machine was tested at tilt angles of 2o, 4o and 6o and at blower inclinations of 0o and 5o. The brokens within 18.18 to 22.62% was reduced to 6.13 and 9.06%.with the utilization of the grading machine. Machine capacity ranges from 1000 – 1,200 kg/hr. The incorporation of the grading machine after milling has upgraded locally processed rice quality from grade III to grade II

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Date Deposited: 17 Jan 2024 11:33
Last Modified: 17 Jan 2024 11:33

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