Evaluating effectiveness of grinding process grain materials
2018
Iskenderov, R., Stavropol State Agrarian Univ. (Russian Federation) | Lebedev, A., Stavropol State Agrarian Univ. (Russian Federation) | Zakharin, A., Stavropol State Agrarian Univ. (Russian Federation) | Lebedev, P., Stavropol State Agrarian Univ. (Russian Federation)
The design features of shredders and the type of feedstock have a decisive influence on the quality of the finished product and on the levelling of its granulometric composition. Inadequate quality of prepared feed reduces the effectiveness of using forage grains up to 30 %. For various species and age categories of animals and poultry, it is necessary to produce mixed fodders, nutritionally balanced and various in particle size. This article presents a methodology for assessing the efficiency of the process of grinding grain materials based on the actual performance of technological processes. The possibility of evaluating this indicator is achieved due to the differentiation of the mass of the finished crushed product into three fractions: the required size, non-hammer and grind, and the last two of them are substandard, requiring further impact on them. The proposed theoretical model characterizes this process from the qualitative aspect of its implementation. On the example of grinding characteristics of grain crusher “Zubrenok” it is shown how the technological process of grain grinding is estimated in accordance with the proposed method and allowed to detect about 28 % of the substandard fraction in the finished product, when its grinding module M = 2.1 mm corresponds to the zootechnical requirements of 1.8-2.6 mm. For comparison, the process of grinding grain in the hammer and rotor crushers and the correspondence of the State Standard product obtained in them are considered. Unlike the standard methods of evaluation by the grinding module and the degree of grinding, the actual effectiveness is more sensitive to changes in the granulometric composition of the finished crushed product.
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