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Design and Development of Rasp Bar Mill for Size Reduction of Maize

Authors:

D. P. Senanayaka ,

Institute of Post Harvest Technology Anuradhapura., LK
About D. P.
Eng., AMIE(Sri Lanka), M.phil(Eng.) (Peradeniya),B.Sc.(Mech.Eng)(Peradeniya),
Principal, Mechanical Engineer
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H. M. A. P. Rathnayake,

Institute of Post Harvest Technology , Anuradhapura, LK
About H. M. A. P.
Eng., AMIE(Sri Lanka) M.Tech(india), B.Sc.(Production Eng.)(Peradeniya),
Senior Mechanical Engineer
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B. M. K. S Thilakerathne,

Institute of Post Harvest Technology Anuradhapura., LK
About B. M. K. S
BSc.Sp.(Agric. Food Sci.& Tech.)Sri Lanka, MSc (Food Sci.& Tech.)Sri Lanka PhD.( postharvest Tech.Horticulture), India Dip. in rice sciences (China), Dip.in Post harvest biology of fruit and Israel),
Director
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B. D. M. P. Bandara,

Institute of Post Harvest Technology, Anuradhapura., LK
About B. D. M. P.
Eng., AMIE(Sri Lanka), M.E. (India) B.Sc.(Mech.Eng)(Peradeniya),
Mechanical Engineer
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T. M. R. Dissanayake

Institute of Post Harvest Technology, Anuradhapura, LK
About T. M. R.
Eng., AMIE(Sri Lanka), M.E. (India) B.Sc. (Production. Eng.)(Peradeniya),
Mechanical Engineer
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Abstract

Particle size affects many characteristics in the manufacturing process. Controlling the particle size helps to assure that the milled material will be consistent and repeatable with respect to firstly color, that is, uniform particles assure batch-to-batch color consistency, Secondly, flowability that is critical to packaging, tableting, weighing. Thirdly, uniformity, that is , consistent bulk density. Fourthly, density - helps control shipping costs and minimize dust. Fifthly, reconstitution, that assures the desired dissolution rate, Sixthly, chemical reaction that is vital for uniform, controlled chemical change. Finally, taste that allows precise portion control for consistent taste. The aim of this project is to design and develop a rasp bar mill for size reduction of maize seeds for different purposes. The fabricated rasp bar mill is capable of feeding maize around 60-180 kg/h, delivering of grits 60-90%, with sieve effectiveness 90-100% at a power requirement of 800-1400W,for different sieve perforation sizes of 5, 6, 7, 8 mm respectively.

 

ENGINEER, Vol. 47, No. 03, pp. 39-47, 2014

DOI: http://doi.org/10.4038/engineer.v47i3.6893
How to Cite: Senanayaka, D.P. et al., (2014). Design and Development of Rasp Bar Mill for Size Reduction of Maize. Engineer: Journal of the Institution of Engineers, Sri Lanka. 47(3), pp.39–47. DOI: http://doi.org/10.4038/engineer.v47i3.6893
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Published on 21 Jul 2014.
Peer Reviewed

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