INCREASE OF BLAST-FURNACE SMELTING EFFICIENCY ON BASE OF NEW ANALYSIS METHODS AND HEAT-EXCHANGE PROCESS REGULARITIES

The work covers the blast furnaces. The aim of the work is to investigate and analyse the heat-exchange regularities in the up-to-date blast-furnace smelting and to develop the perspective directions of improving heat-exchange processes providing the use efficiency improvement in the fuel-power resources and increase of the blast furnace operation reliability on base of the heat-exchange regularities. The experimental investigations on the blast furnaces and also the mathematical modelling of heat-exchange have been performed. The heat-exchange process regularities in the up-to-date blast-furnace smelting taking unevennes of the material and gas distribution into consideration have been determined, the methods for forecast of the temperature patterns in blast furnaces have been developed, the problem for optimum distribution of the combined blast in the blast furnaces group has been decided. The complex of procedures and devices checking the heat-exchange processes, material and gas distribution, forecast of temperature patterns in furnace volume, shaft limiting state diagnostics has been realized, the method for optimum distribution of the natural gas and technological oxygen in blast furnace group and also the procedure correcting the combined blast parameters during iron and slag yield have been developed. The industrial introduction of check and control systems for the heat condition of blast furnaces has been performed. Application field: ferrous metallurgyAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio