Lebid V. Improvement of blast-furnace technology by control of burden and gases distribution with the use bell-less top devices

The process of loading and distribution of charge materials at the furnace top and distribution of gases in blast furnaces equipped with conical charging devices of the tray type. Reducing energy costs during operation of a blast furnace by scientifically based selection of parameters of the loading mode based on the development, improvement of computational and experimental methods for assessing the distribution of charge materials and gas flow in the furnace. Calculated and experimental methods for assessing the distribution of charge materials and gases in blast furnaces, methods of system analysis of the relationship between the distribution of charge materials with the distribution of gases and technological parameters of smelting, experimental studies and mathematical modeling. A new computational method has been developed and an experimental method has been introduced for estimating the distribution of the flux density of charge materials coming from the LPD tray. The method of choosing the rational angles of inclination of the tray in the working angular positions and the engineering method of calculating the distribution of charge materials have been improved. The effect on the axial (central) and peripheral zone of the furnace is shown. A new method for calculating the radial distribution of the charge in the form of a multidimensional matrix has been proposed and implemented in the HMM model. An algorithm is developed for correcting the loading program for generating data of a given distribution of the charge and gases in the furnace. New calculated indicators for estimating the radial distribution of charge materials at the top and axial outlet have been developed. Based on the application of the proposed new methods and design indicators, rational loading modes were developed and mastered under industrial conditions, which ensured a reduction in specific fuel consumption from 1.8 to 11.4 kg / t of pig iron. Implemented. Metallurgy.