Laboratory of Pyrometallurgy of restorative processes

A mathematical description, algorithm and computer program for calculating two-dimensional temperature fields in any vertical and horizontal section of the furnace furnace lining have been developed.

A new methodology for assessing the influence of metallurgical characteristics of iron ore and coke on the efficiency of blast furnace smelting is proposed, including laboratory studies to determine the metallurgical characteristics of iron ore and coke, an analytical study of the influence of these characteristics on the efficiency of blast furnace smelting using mathematical models, pilot and industrial tests.

The development provides for two-dimensional control and prediction of gas dynamic and temperature fields in any vertical section of the furnace when changing the parameters of the blast and loading systems, charge composition and quality of iron ore raw materials, structural elements (height and diameter of the tuyeres, volume and profile of the furnace). The method can be used to analyze the operation of blast furnaces, in particular in case of deviations from the normal mode, to make recommendations for improving work efficiency, to develop melting modes for various iron ore raw materials, and to develop control and management systems for blast furnace smelting.

The phase composition and metallurgical properties of the pelletized iron ore raw materials (pellets) and blast furnace products obtained during laboratory studies (reducibility, strength, softening and melting temperatures of pellets, the viscosity of blast furnace slags is calculated), as well as their mineralogical features. A scheme has been proposed for the phased transfer of the blast furnaces of EVRAZ NTMK JSC to the smelting of ores from the Kachkanar deposit proper.