Determination of design and operation parameters influence of screw type pelletizer on crumbling and temperature of soybean chaff pellets

Abstract

This article presents the study of significant factors influence on the pelletizing process of soybean chaff. The aim of the research was to determine the operating modes of the screw providing chaff soybean pellets output with a crumbling of not more than 12% at the optimum pelletizing temperature of 70 — 80°C. To study the significant factors influence - such as the flight screw step, the screw rotation speed, chaff moisture - on the process of soybean chaff pelletizing, as well as the optimal values variation of these factors, search experiments were conducted on the screw type laboratory pelleting press XP-3. Regression equations were calculated as a result of the studies, which are adequately describing the influence of significant factors on the output of proper quality pellets; this will allow to develop the technology for chaff compacting in the process of stationary processing of the grain and soybean heap, which allows to reduce the costs of transportation and storage of soybean chaff.