ANALYSIS OF THE STRUCTURAL AND CHEMICAL STATE OF DUPLEX SYSTEM SSILICATES-SILICIDES OF ALKALINE EARTH METALS Message 4. The mechanism of refining blast furnace iron with magnesium and its alloys

Procesi littâ, 2023, Vol 4 (154), 15-27

Authors

  • B.F. Belov Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)
  • A.I. Trotsan Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)
  • О.V. Vlasova Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)

DOI:

https://doi.org/10.15407/plit2023.04.015

Keywords:

structural-chemical reactions, adsorption capacity, smelting slags, magnesium, mechanism and technology of cast iron refining, flux cored wires

Abstract

A stochastic analysis of the structural and chemical reactions of blast furnace deoxidation and desulfurization by powder wires containing magnesium and its alloys: silicomagnesium calcium (SMgK), ferrosilicomagnesium (FSMg), as well as magnesium + staurolite and ferrosilicocalcium alloys (FSK) was performed. The material balance of structural-chemical reactions was compiled,
polygonal cells of SIM complexes of oxysulfide non-metallic inclusions formed, and the technological parameters of ladle processing of cast iron were calculated. The distribution of elements in the processes of refining cast iron with magnesium alloys was studied: the deoxidizing elements are silicon and magnesium, the desulfurizer is magnesium in FSMg alloys; in SMGC alloys - deoxidizers
silicon, magnesium, calcium, desulfurizer — calcium; in ferrosilicocalcium alloys, the deoxidizers are silicon and calcium, the desulfurizer is calcium. When FSK + FK40 alloys are used together, the deoxidizers are silicon and magnesium, and the desulfurizers are magnesium and calcium. A comparative analysis of the effectiveness of the use of fillers for powder-coated wires at the
consumption of alloys in the amount of 1.0 kg/t is presented. It was established that the rational refining technology, tested in industrial conditions in pig-iron ladles, is complex processing with activated smelting slags and powder wires with FS15Mg10+FK40 filler, for which А0=22,2 % and АS=26,7 % . At the same time, both a decrease in the consumption of desulphurizing materials and
an increase in the efficiency of blast furnace iron refining are observed.

Author Biographies

B.F. Belov, Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)

PhD (Engin.), Senior Research Scientis

A.I. Trotsan, Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)

Dr. Sci. (Engin.), Prof.

О.V. Vlasova, Institute for Problem of Materials Science National Academy of Science of Ukraine (Kyiv, Ukraine)

PhD. Sci. (Engin.)

References

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Published

29-11-2023

How to Cite

Belov Б. ., Trotsan А. ., & Vlasova О. . (2023). ANALYSIS OF THE STRUCTURAL AND CHEMICAL STATE OF DUPLEX SYSTEM SSILICATES-SILICIDES OF ALKALINE EARTH METALS Message 4. The mechanism of refining blast furnace iron with magnesium and its alloys: Procesi littâ, 2023, Vol 4 (154), 15-27. Casting Processes, 154(4), 15–27. https://doi.org/10.15407/plit2023.04.015

Issue

Casting processes №4 (154) 2023

Section

PHASE INTERACTION

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Copyright (c) 2023 Б.Ф. Бєлов, А.І. Троцан, О.В. Власова

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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