Open AccessMathematical Modelling of the Thermal State of a Ladle During Arc Heating of the Melt
Author(s) -
E Agapitov,
M. S. Sokolova,
М. А. Лемешко
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/969/1/012044
Subject(s) - ladle , electric arc furnace , slag (welding) , electric arc , thermal state , thermal , nuclear engineering , process (computing) , metallurgy , materials science , mechanical engineering , mechanics , process engineering , environmental science , engineering , thermodynamics , computer science , electrode , chemistry , physics , operating system
The paper analyzes energy losses in the ladle furnace. In particular, the authors focus on electrical losses, namely total energy losses of the electric arc, conditionally including radiation losses of a part of the arc uncovered by slag. Managing these flows creates conditions for increasing the efficiency of heating. The calculations given in the paper showed that electrical losses decreased, during prolonged heating (about 8-12 minutes) with a sufficient amount of slag. This mode provides a reduction in heat loss by 4-5 %. By selecting options of changes in a sequence of stages and their duration, the proposed mathematical model makes it possible to apply a new technology to process molten steel in the ladle furnace characterized by lower power consumption.