Testing and evaluation of CFTRI Dal mill for pigeonpea (UPAS 120)

Abstract

This study covers the performance study of CFTRI dal mill using UPAS 120 variety of pigeonpea as untreated and treated grains. The machine performance was carried out in term of maximum grain input and output capacity, degree of dehusking, milling efficiency, dal recovery and quality index. In dry milling method, it was found that the maximum grain input and output capacity were 83.77 kg/h and 54.85 kg/h, respectively. For milling of untreated grains the mill performances, viz., degree of dehusking, milling efficiency, dal recovery and quality index, were 99.97%, 89.32%, 71.04% and 89.34%, respectively, while the pearled grains, broken, powder, dal with husk and unhusked grains were 4.35%, 2.71%, 5.68%, 16.20% and 0.02%, respectively.  The power consumption at no load and load conditions, with untreated and treated grains, were 0.90, 1.19 and 1.03 kW/h, respectively. Similarly, in milling of water treated grains, the maximum grain input and output capacity were 93.21 kg/h and 63.79 kg/h, respectively. Degree of dehusking, milling efficiency, dal recovery and quality index for treated grains were 99.90%, 92.83%, 75.21%, and 92.93%, respectively from the mill. The pearled grains, broken, powder, dal with husk and unhusked grains obtained from treated grains were 2.62%, 2.90%, 3.01%, 16.23 and 0.10% respectively. The power consumption at load with treated grains was1.03 kw/h.