Abstract
This paper reports on the performance evaluation of a machine for cottage level production of pellets from cassava mash. Peeling, grating and drying freshly harvested cassava tubers, produced cassava flour. The flour was mixed with water at different blend ratios to form cassava mash of different moisture contents. The performance of the pelletizer was evaluated in terms of the density, durability, crushing strength and cyanide content of the pellets, and the throughput of the machine, against the moisture content of the mash (18, 20 and 22 % w.b.), die size (4, 6 and 8 mm) and the auger speed (90, 100 and 120 rpm). Test results showed that the bulk density and the durability of pellets decreased while the moisture content increased significantly (p<0.05) and separately with increasing die size and moisture content of cassava mash. The pellets with the best quality attributes were obtained from cassava mash at 18% moisture content (w.b.) through the 4 mm die at 90 rpm and a maximum throughput of 54 kg/hr. The machine, thus, provides a significant leverage in the utilization of
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