MANUFACTURING AND PERFORMANCE EVALUATION OF A LOCAL ANIMAL FEED HORIZONTAL MIXER

Document Type : Original Article

Authors

1 Prof. and Head of Agric. Eng. Dept., Fac. of Agric., Zagazig Univ., Egypt.

2 Lecturer of Agric. Eng., Fac. of Agric., Zagazig Univ., Egypt.

Abstract

The present research was carried out to manufacture and evaluate some operating parameters affecting the performance of an animal feed horizontal mixer to improve product quality. The mixer performance was studied as a function of change in material batch size and mixing time. Performance evaluation of the horizontal mixer was carried out in terms of mixing homogeneity, coefficient of variation, specific energy and mixing cost.
The experimental results revealed that coefficient of variation; mixing homogeneity; specific energy and mixing costs were in the optimum region under the following conditions:
-        The mixer shaft is designed at a diameter of 80 mm.
-        Operate the mixer at a batch size of between 700 to 850 kg.
-        The mixing time should be of between 15 to 20 minutes.

ASAE (1997a): Cubes, Pellets, and Crumbles-Definitions and methods for determining density, durability, and moisture. Standards 1997. Am. Soc. Agric. Eng., St. Joseph, MI.
ASAE (1997b): Method of determining and expressing fineness of feed materials by Sieving. Standards  1997. Am. Soc. Agric. Eng., St. Joseph, MI.
Avik, S. and C. R. Wassgrena (2009): Simulation of a continuous granular mixer: Effect of operating conditions on flow and mixing. Chemical Engineering Science 64: 2672 – 2682.
Clark, P. M. and K. C. Behnke (2006): Effects of pelleting protein concentrate pellets on feed mill throughput and electrical efficiency. Poult. Sci. 83 (Suppl. 1):170 (Abst.).
Coates, P. M. and K. Tanaka (1992): New developments in fatty acid oxidation. New York: willey-Liss.
Dirksen, G. U; H. G. Liebich and E. Mayer (1980): Feed manufacturing problems-incomplete mixing and segregation. C-555 Revised. KSU Cooperative Extension Service. Manhattan, KS.
Khurmi, R. S. and J. K. Gupta (1984). A textbook of machine designs. Eurasia Publishers house (Pvt.). New Delhi .P: 1067.
Kurt,G. (1979). Engineering formulas. Third Ed. Mc Graw-Hill book Company. New York St. Lous San Francisco Montreal-Toronto.
Onyegu, O. S; O. Ibifuro; M. N. Idung and T. Aguheva (2012): design and fabrication of an industrial poultry feed tumble mixer. Leonardo Electronic Journal of Practices and Technologies 20: 49–60.
Portillo, P. M; M. G. Ierapetritou and F. J. Muzzio (2007): Characterization of continuous convective powder mixing processes. Powder Technology 182: 368–378.
Traylor, S. L. (1997): Effects of feed processing on diet characteristics and animal performance. Masters Thesis, Kansas State University, Manhattan, KS.