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Development of a small abrasive cylindrical mill for milling pulses
Author(s) -
SAHAY K. M.,
BISHT B. S.
Publication year - 1988
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1988.tb00545.x
Subject(s) - abrasive , cajanus , materials science , polishing , gram , abrasion (mechanical) , mill , composite material , pulp and paper industry , agronomy , mechanical engineering , engineering , biology , genetics , bacteria
Summary An abrasive carborundum roller cylindrical mill was developed to dehusk and split pulse grains to make dhal. The clearance between the outer screen cage and inner carborundum grit coated abrasive roller was maintained 10 mm throughout. It facilitated even abrasion of the grains. Its effective capacity was 100 kg/hr, and it could be owned, operated and manned by less‐skilled people of rural and semi‐urban areas. Performance of the mill was evaluated for different pulses at different rotational speeds and feed rates. It was found that at 850–900 rpm (13.5–14 m/s roller surface speed) maximum milling efficiency (88%) was obtained. Dhal recovery was 74–75%. The cost of milling was estimated to be Rs 85.00 [U.S. 7] per tonne of feed, but this did not include final polishing of the product to improve appearance. The machine was suitable for processing pigeon‐pea (Cajanus cajan) , green gram (mung beans, Phaseolus aureous Roxb) and black gram (Phaseolus mungo) .