Abstract
The main objectives of the study are the analysis and generalization of the parameters that determine the intensity of the sintering, the development of a model of motion of the combustion zone of the sinter charge. As a result of the analysis of the known indicators of the intensity of the sintering process, it was shown that the most representative characteristic of the intensity of the process is the vertical sintering speed, which is an integral part of the complex intensity indicator − the specific productivity of the sintering machine. Many various models of the sintering process have been developed. The author develops a new mathematical model of the motion of the solid fuel combustion zone during sintering of the sinter charge (vertical sintering speed). The model is presented in the form of an expanding network of separate interrelated dependencies (equations), selected as independent submodels. The results of the study using the developed model of the dependence of the vertical sintering speed on the solid fuel content and on the flux content in the charge, are presented. It is concluded that the presented model can be considered as an element of a universal model software complex of the sintering process.
Highlights
At the present stage of development of ferrous metallurgy, sinter is and will remain for a long time the main type of prepared iron ore for the production of pig iron and pig iron, in turn, is the main source material for steel production
A detailed analysis of the used indicators of the intensity of the sintering has not been performed, the relationships between them have not been studied, as is done, for example, with respect to the indicators of the intensity of the blast furnace. This situation negatively affects the development of sintering production, since it does not allow a reliable comparison of the intensity of the sintering machines, the sintering rate of sinter charge as well as the development effectiveness of various methods of intensifying the sintering process of the iron ore charge, and the assessment of the reserves for improving the technical and economic indicators of the operation of sinter plants
This article is devoted to the analytical study and generalization of indicators of the intensity of the sinter process, factors affecting the of a new mathematical model, the movement of the combustion zone of solid fuel of the sinter mixture and its application to assess the influence of various factors on the sintering
Summary
At the present stage of development of ferrous metallurgy, sinter is and will remain for a long time the main type of prepared iron ore for the production of pig iron and pig iron, in turn, is the main source material for steel production. A detailed analysis of the used indicators of the intensity of the sintering has not been performed, the relationships between them have not been studied, as is done, for example, with respect to the indicators of the intensity of the blast furnace This situation negatively affects the development of sintering production, since it does not allow a reliable comparison of the intensity of the sintering machines, the sintering rate of sinter charge as well as the development effectiveness of various methods of intensifying the sintering process of the iron ore charge, and the assessment of the reserves for improving the technical and economic indicators of the operation of sinter plants. This article is devoted to the analytical study and generalization of indicators of the intensity of the sinter process, factors affecting the of a new mathematical model, the movement of the combustion zone of solid fuel of the sinter mixture and its application to assess the influence of various factors on the sintering
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