CONSTRUCTION AND PERFORMANCE EVALUATION OF A CENTRIFUGAL MILK SEPARATOR

Document Type : Original Article

Authors

1 Assist. Prof. of Agric. Eng., Fac. of Agric., Zagazig Univ., Egypt.

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

3 Lecturer of food science, Fac. of Agric., Zagazig Univ., Egypt.

Abstract

The aim of the present study is to construct and evaluate a centrifugal milk separator for cream and skim milk production. The milk separator consists of five main parts: power source, transmission system, collection milk vessel, centrifugal separation unit and production collectors. The centrifugal separation unit consists of three parts: housing, separated discs with totally number of 40 conical discs collect and fix in the housing together and stuck base, which fastening the conical discs and the housing together through a stud and Hex. Hd. Nut. Laboratory experiments were conducted to optimize milk feeding rate, separation rotating speed and raw milk temperature degree. While the separator performance was evaluated in terms of cream and skim milk amounts,skim milk fat percentage, separation efficiency, specific energy and operational cost of milk separation. The experimental results reveal that the milk separator is recommended to be used under the following conditions to give the highest cream amount of 35 kg/h with lower specific energy and operational cost of 25.14 kW.h/Mg and 228.60 L.E/Mg, respectively:
- Milk feeding rate to the conical separating unit of 400 kg/h.
- Separation rotating speed of 8000 rpm.
- Temperature degree for the raw milk of 37° C.

Main Subjects

References

Aita, O. A. A., Shadia E. S. Elshishini, Fatheya A. H. Soliman and Samah R. M. Shaalan (2012): Best Available Techniques (BAT) for the Dairy Industry in Egypt. Final report. http://databases.bat4med.org/.
Awady, M. N. (1978): Tractor and farm machinery. Text book, Faculty of Agriculture, Ain-Shams University. Pp: 164-167.
Awady, M. N; E. Y. Ghoniem, and A. I. Hashish (1982): Agriculture comparison between wheat combine harvesters under Egyptian conditions. Res. Bul. Ain-Shams Univ.:13p.
DMI (2005): Cream Ingredients. Dairy Management Inc.TM. www.innovatewithdairy.com.
Endress and Hauser (2008): Promag and Promass provide fat standardization with precise control of cream’s density and flow.www.us.endress.com.
Gerber, N. (1891): Neuer Butyrometer. Patent CH2621, (1891-01-31), Bern: Eidgenössisches Institut für Geistiges Eigentum.

John G. Ashby (1988): Power Hydraulics. PAVIC Publications.

K. J. Burgess (1991): Milk Fat, Society of Dairy Technology, Huntingdon, U. K., pp. 30-36.
Kenanaonline (2013): Fat Products. www.kenanaonline.net/page/8626.
Meshref A. M. S. (2013): Bacteriological quality and safety of raw cow’s milk and fresh cream.Slov. Vet Res. 50 (1): 21-30.
Tetra Centri (2003): Tetra Centri dairy separators for every duty. Tetra Pak Processing Components AB, Lund, Sweden. www.tetrapak.com.
Westfalia, GEA (2010): Process stages, systems and equipment for the dairy industry from GEA Westfalia Separator. www.westfalia-separator.com. 
Westfalia, GEA (2012): Milk Fat Processing. Machines used for making butter oil. www.westfalia-separator.com.

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