Search academic texts

Registration Number

0226U000867, (0125U000167) , R & D reports

Title

Research into the technology of purging the converter bath with oxygen and oxygen-nitrogen jets with the addition of coal dust

popup.stage_title

Узагальнення наукової інформації і аналіз тенденцій розвитку перспективних технологій киснево-конвертерної плавки з вдуванням порошкоподібного вугілля та допалюванням відхідних газів в порожнині конвертера. Розробка та виготовлення кисневої фурми, монтаж стенду, обґрунтування і апробація методики проведення дослідних плавок. Обробка і аналіз даних, розробка промислової конструкції паливно-кисневої фурми для продувки конвертерної ванни. Підготовка звіту.

Head

Cherniatevych Anatolii H., Доктор технічних наук

Registration Date

16-01-2026

Organization

Institute of Ferrous Metallurgy. ZI Nekrasov of the National Academy of Sciences of Ukraine

popup.description1

Experimental justification and laboratory study of the technology of purging a converter bath using an oxygen lance, which is adapted to blow oxygen and coal dust into the bath in a flow of carrier nitrogen.

popup.description2

For the first time, due to the high-temperature modeling, previously unknown information was obtained regarding the physicochemical, hydro-gas-dynamic and heat-mass transfer processes occurring in the converter cavity during preheating of scrap metal using a new design of a fuel-oxygen lance with the supply of pulverized coal fuel in an annular oxygen shell and combined blowing of the converter bath through a double-tier lance with a double-row tip with supersonic and supersonic oxygen jets with postcombustion of exhaust gases. According to the results of high-temperature modeling data processing, the following were determined and substantiated: - the optimal ratio of pulverized coal fuel and oxygen supply through the proposed design of the fuel-oxygen lance, which allows to increase the thermal power of the lance and reduce the duration of heating of scrap metal in the converter; - rational technology of combined blowing of the bath with oxygen and neutral gas with postcombustion of exhaust gases with the condition of improving the heat balance of the smelting and preventing intensive wear of the converter lining. New designs of rotating fuel-oxygen lances for uniform heating of scrap in the converter cavity using pulverized coal fuel or natural gas, as well as new technologies of combined blowing of the converter bath with oxygen and neutral gas mixing with postcombustion of exhaust gases using double-circuit and double-tier lances, have been developed and proposed for implementation in the converter shops of PrJSC "KAMETSTAL" and PJSC "ArcelorMittal Kryvyi Rih". They allow to reduce the consumption of the hot metal for smelting, which is accompanied by a reduction in carbon dioxide emissions. The study meets high-level international standards.

Product Description

popup.authors

Yushkevich Pavlo O.
Anatolii H. Cherniatevych
Lavr S. Molchanov
Samokhvalov Serhii Ye.
Vakulchuk Volodymyr V.
Dudchenko Serhii O.
Tetiana S. Holub
Pavlo H. Prokopenko
Maryna V. Reshetova
Yevhenii S. Kakushkin

popup.nrat_date

2026-01-16