Abstract
The modelling of abrasive dehusking and desanding of a locally fabricated rice processing machine was carried out with the aim of establishing optimal values for the various parameters such as speed, relative velocities (Rh and Ri), abrasive force for dehusking (Fd) and impurity removal rate (Fi), applied pressure and the efficiency. The machine was designed with two rollers, one static and the other rotational, both rollers generate the abrasive process with an initial feed rate of 0.41 to 0.54N, while the applied was maintained at pressure 5000 – 6620Pa. The relative velocity and the contact area between the abrasive surface and rice husk were kept constant at 7.5m/s and 2.05 x 10-4 m2 respectively. The rate of rice husk removal ranged from 2.5215 to 3.3385 m3/s, while the rate of impurities removal ranged from 3.3553 to 4.4424 m3/s at the above pressure. Also, the rate of impurity removal during desanding ranged from 2.9616 to 4.73485 m3/s. It was observed that the rate of rice husk removal ranged from 2.2256 to 3.5610 m3/s, while the rate of impurities removal as velocity increased from 5 – 8 m/s. Initial impurity removal rate was estimated as 0.0245, but optimization result showed an improved husk and impurity removal rate a maximum of 0.0307, with an efficiency increase of 25.31% at a pressure of 6.62 kPa and relative velocity of 8.0m/s. Optimization results shows 25% increase in removal rates of rice husk and other impurities at same energy, the dehusking efficiency improved from 72.85% to 85.84%.
Keywords
Optimization Efficiency, Rate, Removal, Improved, Relative Velocity, Impurity
Citations
IRE Journals:
Jinyemiema, Tamuno K , Anthony, Awaji-itimakon U.
"Modelling and Optimization of Abrasive Desanding and Dehusking of Rice Production" Iconic Research And Engineering Journals Volume 8 Issue 9 2025 Page 1096-1101
IEEE:
Jinyemiema, Tamuno K , Anthony, Awaji-itimakon U.
"Modelling and Optimization of Abrasive Desanding and Dehusking of Rice Production" Iconic Research And Engineering Journals, 8(9)
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