Abstract
The use of condensed extract in the production of corn feed contributes to the improvement of their nutritional and biological value. The rheological properties of the feed material are of great importance in the mechanical interaction with the working bodies of the machines, in the movement of viscous media along technological conveyors, as well as in the intensification of heat exchange processes. The technique, laboratory equipment and the results of studies of physical and mechanical characteristics of corn feed are presented. The viscosity properties of the corn extract are investigated depending on the temperature. It is shown that when decreasing the temperature, the viscosity of the corn extract increases due to the aggregation of its components, which characterizes the non-Newtonian flow of the extract. The coefficient of external friction of the pulp and extract mixture in the technology of preparing corn feed allows calculating the geometry of the storage tanks and energy costs of the processes. The change in the coefficients of friction of corn feed when interacting with various surfaces, depending on the content of dry substances. The specific heat capacity, thermal conductivity and thermal diffusivity of the extract and corn feed were determined and investigated. It has been revealed that the dependences of the thermo-physical parameters of the extract and corn feed on the solids content are non-linear in nature, monotonously decreasing when increasing the concentration of solids.
Highlights
When processing corn for starch, pulp and extract are obtained as bypass
For the purpose of further use, corn extract is thickened to dry matter content (DM) of 40...45 %
Many scientists studied the preparation of starch bypass feeding-stuffs and their physical and mechanical characteristics [1,2,3]
Summary
When processing corn for starch, pulp and extract are obtained as bypass. Many scientists studied the preparation of starch bypass feeding-stuffs and their physical and mechanical characteristics [1,2,3]. The process of preparing feeds from the starch and syrup production bypass is associated with various technological operations with the transportation of the material by the working bodies of machines. Thermo-physical characteristics of the extract and corn feed are necessary when calculating, optimizing and controlling the technological processes of their processing. The task of investigations was to determine the numerical values of the physical and mechanical and thermo-physical properties of corn extract and its mixture with pulp in feed production. When determining the numerical values of the physical and mechanical and thermo-physical characteristics of the feed from the mash and corn extract, conventional and private methods were used. Raw materials and corn feeds were used, produced at public corporation "Ibredkrakhmalpatoka" in Ryazan Region
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