Vakulchuk V. Development of energy-efficient technology of blowing the converter bath with different impulse over- and sonic oxygen and nitrogen jets with partial postcombustion of flue gases

Technological process of combined purge of converter bath with oxygen and neutral gas. Scientific substantiation and development of new energy efficient technology with the use of two-tier oxygen lance and a modernized system of supplying two independently regulated flows of oxygen and nitrogen. Methods of thermodynamic and numerical analysis, theory of metallurgical processes, high-temperature modeling. A new method of combined blowing converter bath is developed. With the use of high-temperature modeling, new information on the expedient form of reaction zone organization of interaction with the converter bath of super- and sonic oxygen jets was obtained, favorable modes of access to the surface of the foamed slag-metal emulsion of CO fluxes with the afterburning of the latter and the prevention of local wear of converters mouth. Additional control effects of the foamed slag-metal emulsion state were established. High-temperature and numerical simulations have developed, refined and proposed for industrial use new designs of two-tires lances, modes of upper and combined blowing of the converter bath with their use. At the stage of implementation. Ferrous metallurgy.