Volume 5 Issue 4 Article 20

Pneumatic separation of Mami cultivar almond (Prunus amygdalus) kernel from cracked shell

 

Mohammad Javad Aarabi1*, Rahim Ebrahimi2

 

1Chaharmahal and Bakhtiari Science and Technology Park, Shahrekord, Iran
2Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran

 

Keywords: [Almond, Air velocity, Angle of mixture supply, Mixture feed rate, Separation error, Separation efficiency]

Page No:573-577

 

Received – May 25, 2017; Revision – August 29, 2017; Accepted – September 09, 2017
Available Online - September 10, 2017

 

Abstract

 

The aim of the present study was to investigate the efficacy of pneumatic separation method in separation of almond kernels from its cracked shells. The influence of air velocity, mixture feed rates, distance between mixture inlet and kernels outlet, angle of mixture supply into tunnel and repeat times of operation on separation efficiency was also studied in this study. Results of study revealed that the separation efficiency decreased with increasing feed rate, angle of mixture supply into tunnel and distance between mixture inlet and kernels outlet. The highest ?% was reported on 9.5 m/s velocity while the lowest amount was reported on the 6.5 m/s. Increasing in repetition times have significant effect on the separation efficiency and it was reported higher with higher repetition time. Mixture of kernels outlet analysis revealed that separation of shells with 20-30mm length give poor results and about 50% of the shells remained on kernels outlet.

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