Design and Optimisation of Shea Butter Mixer

Shehu A. A., Balami A. A., Osunde Z. D., Ademoh N.A.


A shea butter mixer was designed, fabricated and tested.  The machine mixed milled shea paste with water and extract shea butter oil from the paste. Its major component parts included mixing blade, mixing tank, gear system, diesel engine and burner.  The machine capacity was 56 kg per hour. The results of testing of the machine revealed that the yield of oil ranged between 26.52 % and 39.43 %. The highest oil yield of 39.43 % was obtained from interaction between container diameter of 50 cm, blade type 5 numbers and speed of 110 rpm, while the least oil yield of 26.52 % was obtained from interaction between container diameter of 33.2 cm, blade type of 3 numbers and speed of 110 rpm. The blade type, container diameter and speed of mixing were found to have significant effects on yield of the shea butter. The development of this mixer would have a positive economic impact on the local processors. The mixer would improve oil extraction and increase the product throughput for the local investors

Keywords: shea butter, mixer, blade, yield

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ISSN (Paper)2224-5782 ISSN (Online)2225-0506
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