Pages: 258-261
Published: 28.02.2019
Abstract: Currently, high attention is paid to the problem of reducing the energy intensity of the process of grinding grain raw materials and secondary material resources, while improving the quality of the product, leading to an increase in economic efficiency in feed production of the Russian Federation [1]. Currently, in the production of combined feed, extrusion technologies are used proactively, which include such processes as: pressing, mixing and grinding. This technology is associated with high energy and raw materials costs. It should be noted that the optimal technology of processing of secondary material resources, for example, such as husks (a product of processing of cereals) should ensure the preservation of the useful properties of raw materials at each stage of its processing, in particular at the stages of its extrusion and grinding. This topic is dedicated to the work of such scientists as: L. R., F. Kika, Korotkov V. G., Antimonov S. V., Kobylkin D. V., Kholodilin, V. P., O. Y. Sokolov, N. V. Zaitsev, S. I., Zurabyan, Nekhoroshev M. V., Fedorenko S. I., Zurabyan, V. M. and V. I. Skrebtsov, and A. Y. Stavissky, D. J. Bryce, G. W. Parks, A. E. Lipska, W. J. Parker, R. M. Estevc, M. H. Gollis, R. Garcia, and others, they addressed the creation of a mathematical apparatus and design of grinders of various types, including the grain size under the conditions of vacuum, high pressure, low and high temperature conditions, etc. One of the above problems is to optimize the process of grinding of secondary material resources by using as a positive factor of negative temperatures - cryogenic. It is established that the research was conducted dedicated to the problem of influence of low temperatures on the resistance of the grain to be ground. It was found that if the grain temperature is negative (below -5 0C and below), the free and bound moisture, always located in the pores, capillaries and intercellular spaces of the grain, turning into ice and expanding, loosens the grain structure and weakens the bonds between its constituent parts. As a result, the resistance of the secondary material resources in the grinding process is significantly reduced. In addition, the decrease in temperature leads to a decrease in the kinetic energy of the translational motion of the molecules of the substance, reduces their speed and free path length, the grain becomes less viscous and plastic, its fragility increases [2]. Thus, it is possible to create a fundamental basis and practical recommendations for the implementation of the process of cryogenic secondary material resources for the purpose of turning into a feed product for farm animals. Analogues of the technology is not available in Russia not abroad.
Key words: crushing, power consumption, grain raw materials, technological process, power, formula-feed industry, mathematical model, resource-saving.
|
