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http://dx.doi.org/10.5307/JBE.2005.30.4.229

Physical Properties of Rice Husk  

Park S. J. (Bioindustrial Machinery Engineering Major, Chonbuk National University)
Kim M. H. (Bioindustrial Machinery Engineering Major, Chonbuk National University)
Shin H. M. (School of Mechanical and Automotive Engineering, Keimyung University)
Publication Information
Journal of Biosystems Engineering / v.30, no.4, 2005 , pp. 229-234 More about this Journal
Abstract
Kinetic friction coefficient, bulk density, dynamic and static angle of repose, and terminal velocity of rice husk at the moisture range 7 to $23\%$ w.b. were determined. It could lead to better design and operation of the processing machinery and handling facilities. Friction coefficient was determined from the horizontal traction force measured by pulling the container holding a mass of rice husk on various plate materials. Dynamic angle of repose was calculated from the photos of bulk samples piled by gravity flow on a circular platform. Static angle of repose was determined by measuring the side angle of the bulk material which was left in a cylindrical container after natural discharge of the bulk sample through a circular hole in the bottom plate. Kinetic friction coefficients of rice husk were in the range of $0.254\~0.410,\;0.205\~0.520,\;0.229\~0.400,\;and 0.133\~0.420$ on PVC, mild steel, galvanized steel, and stainless steel, respectively. Bulk density, dynamic and static angle of repose, and terminal velocity were in the range of $91.7\~98.3$ $kg/m^3$, $40.2\~47.6^{\circ},\;52.8\~83.7^{\circ},$ and $1.36\~1.73$ m/s, respectively. These physical properties of rice husk increased linearly as the moisture content increased.
Keywords
Rice husk; friction coefficient; Bulk density; Angle of repose; Terminal velocity;
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  • Reference
1 Jeon, Y. W. 1982. Design and development of a multi-purpose dryer using non-conventional source of energy. Int'l Rice Res. Institute. Los Banos. Philippines
2 Kim, M. S. and H. K. Koh. 1981. Physical properties of grains. J. of Korean Soc. Agric. Mach. 6(1):73-82 (In Korean)
3 Shimizu, H. and S. Hayashi. 1977. Study on filter characteristics of rice hull charcoals. J. of Japanese Soc. Agric. Mach. 38(4):551-557 (In Japanese)
4 고학균 등. 1995. 미곡종합처리시설. 문운당
5 Park, S. J. and M. H. Kim. 1998. Some physical properties of chopped rice straw. J. of Korean Soc. Agric. Mach. 23(6):583-590 (In Korean)
6 Kim, M. S. and C. H. Lee. 1976. Kinetic friction of grains on surfaces. J. of Korean Soc. Agric. Mach. 1(1):49-54 (In Korean)
7 Mohsenin, N. N. 1986. Physical Properties of Plant and Animal Materials. Gordon and Breach Sci. Publishers, New York, N.Y., pp. 616-681, 682-778, 806, 818
8 강석호. 1995. 분체공학. 희중당
9 Koh, H. K. 1991. Physical properties of agricultural products and their application. Research report. College of Agriculture, Seoul National Univ., Suwon, Korea (In Korean)
10 김지동 등. 1981. 왕겨로부터 가연성 가스 제조에 관한 실험연구. 에너지 4(2):74-89
11 Bickert, W. G. and F. H. Buelow. 1966. Kinetic friction of grains on surfaces. Trans. of the ASAE 9(1):129-131, 134   DOI
12 Lee, C. H., Y. J. Cho and M. S. Kim. 1989. Aerodynamic study on pneumatic separation of grains (I) - An experimental study on the vertical wind tunnel. J. of Korean Soc. Agric. Mach. 14(4):272-281 (In Korean)
13 Ezaki, H. and T. Satake. 1983. Research on the compressive forming characteristics of rice husk (I). J. of Japanese Soc. Agric. Mach. 44(4):625-631 (In Japanese)