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Effects of structure of die hole in ring-die briquetting machine on Leymus chinensis open compression characteristics

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2017 ASABE Annual International Meeting  1700613.(doi:10.13031/aim.201700613)
Authors:   Hongxiang Shen, Decheng Wang, Guanghui Wang, Jinkui Feng, Xiaopeng Bai
Keywords:   Click here to enter keywords and key phrases, separated by commas, with a period at the end

Abstract. The aim of this study is to investigate the influence of structures of die hole in ring-die briquetting machine when Leymus chinensis briquettes are compressing by using an opened-end single press device. The entrance sectional area (24mmx24mm and 26mmx26mm), cone length (10mm and 30mm) and straight length (60mm and 80mm) were considered as the die hole structure influence factors, and the effect of different structures of die holes on the extrusion pressure, specific energy consumption and density for Leymus chinensis was evaluated. The results show that the highest density of products is 1104.386 kg/m3 with the entrance sectional area of 26x26 mm, cone length of 30 mm and straight length of 80 mm while the extrusion pressure and specific energy consumption were both largest (57.84 MPa and 91.696 kJ/kg, respectively). The increase of entrance sectional area, cone length and straight length resulted in the increase of the extrusion pressure, specific energy consumption and density for Leymus chinensis. Therefore, the study in the opened-end single press device can be used as an indication of ring die hole optimization in real briquette production.

Keywords. briquetting, die hole structure, extrusion pressure, specific energy consumption, density

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