Article

STUDY ON CHANGES IN PORE SIZE ON SINGLE POWDER AND REDUCTION SWELLING INDEX DURING THE REDUCTION OF IRON MILL SCALE WITH HYDROGEN AND FORMING GAS

Mukhammad Sultonkhon PaizullakhonovInstitute of Materials Science, Uzbekistan; Tashkent State Technical University, Department of Materials Science, UzbekistanSanjar AbduraimovInstitute of Materials science of UzbekistanOleksandr KovtunTechnische Universität Bergakademie Freiberg, Institute of Iron and Steel Technology, GermanyO. VolkovaInstitute of Iron and Steel Technology, Freiberg University of Mining and Technology, GermanySamar AbduraimovInstitute of Materials science of Uzbekistan

High Temperature Material Processes An International Quarterly of High-Technology Plasma Processesjournal2024en

ABI

Abstract

In this research study, we examined the impact of hydrogen content, temperature, and reaction time in reducing the mill scale and porosity formation on a single powder. Reduction reactions were carried out at temperatures ranging from 700&deg;C to 1000&deg;C under hydrogen and forming gas (80 vol&#37; N<sub>2</sub>/20 vol&#37; H<sub>2</sub>). The utilization of hydrogen as a reducing agent has been identified as leading embrittlement and the creation of porous configurations. In this study, we examined the porosity structures on the single powder formed during the reduction of iron oxides using two different reducing gases. The results indicated an increase in the degree of reduction and porosity size on the single powder with increasing temperature for both hydrogen and hydrogen/nitrogen mixtures.

Topics

Iron and Steelmaking Processes Metallurgical Processes and Thermodynamics Metallurgy and Material Forming

Identifiers

DOI: 10.1615/hightempmatproc.2024054324

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