CONTRIBUTION OF THE CHAIR OF FERROUS METALLURGY TO THE DEVELOPMENT OF THE THEORY AND TECHNIQUE OF HIGH-TEMPERATURE MODELING OF CONVERTER BATH BLOWING

E V Protopopov,S V Feiler,A G Chernyatevich

doi:10.17073/0368-0797-2015-5-299-308

Abstract

The paper presents the results of developing and improving the systems and methods of high-temperature hydrogasdynamic and mass transfer modeling of top and combined blowing in a converter bath. The role of the Chair “Ferrous Metallurgy” of Siberian State Industrial University in the development of theoretical aspects of blowing the metal melt in converter with gas jets has been shown. Owing to the use of converters with viewing windows, the usage of special techniques of visualization of the reaction zone and a video, it has been able to observe and record the picture of physical phenomena on the surface of the blown bath converter with the video camera. The developed technique of a converter transparent wall has allowed obtaining reliable information on the condition and movement of slag-metal interface at various ways of blowing and formation mechanism of emissions. The developed and proved main propositions of the methodology of high-temperature simulation of different options of converter bath blowing with a proposal of the dynamic similarity criteria allow with high confidence to transfer the data obtained from the model for the industrial design. Practical options of the approach have been proposed to study hydrogasdynamic and heat-and-mass transfer processes occurring in the main reaction zones of a converter workspace at the top and combined blowing.

Highlights

The developed and proved main propositions of the methodology of high-temperature simulation of different options of converter bath blowing with a proposal of the dynamic similarity criteria allow with high confidence to transfer the data obtained from the model for the industrial design
Practical options of the approach have been proposed to study hydrogasdynamic and heat-and-mass transfer processes occurring in the main reaction zones of a converter workspace at the top and combined blowing
Вышеописанная методика позволила на более высоком уровне в сравнении с работой [6] впервые осуществить комплекс высокотемпературных экспериментов по количественной оценке окисления примесей и тепломассопереноса в различных реакционных зонах конвертерной ванны при верхней кислородной продувке [22, 26] и комбинированной продувке [24, 25] кислородом и нейтральным газом

Summary

Introduction

Предложены практические варианты подхода к изучению гидрогазодинамических и тепломассообменных процессов, протекающих в основных реакционных зонах рабочего пространства конвертера при верхней и комбинированной продувке. Проведенные в свое время на лабораторных установках эксперименты [1, 2] по исследованию механизма явлений при верхней кислородной продувке конвертерной ванны убедительно показали неоспоримое преимущество высокотемпературного моделирования по сравнению с холодным с точки зрения получения истинной информации о развитии гидрогазодинамических и тепломассообменных процессов в рабочем пространстве конвертера.

Results

Conclusion