Transport Properties of HPSR Gases

Masab Naseri Seftejani, Johannes Schenk

Research output: Chapter in Book/Report/Conference proceedingConference contribution


During the process of hydrogen plasma smelting reduction (HPSR), hydrogen in the plasma state reduces iron oxide in a plasma arc reactor. In HPSR, a mixture of H2-Ar or H2-N2 is injected into the plasma arc zone. The main thermophysical properties of the plasma gases are the transport coefficients and heat and mass transfer, which are the main parameters that influence the ionization degree and consequently the reduction rate of iron oxides. In this study, the transport coefficients of argon, nitrogen, hydrogen, and mixtures of argon-hydrogen and nitrogen-hydrogen are discussed. The properties of plasma gases in terms of viscosity, thermal and electrical conductivity, and heat capacity are also presented. Moreover, the energy demand of steel production with the use of different plasma gases is evaluated and compared. The gas compositions of H2-Ar and H2-N2 mixtures at high temperatures were calculated by FactSageTM 7.1
Original languageEnglish
Title of host publicationThe Chinese Society for Metals
Publication statusPublished - 24 Oct 2018
EventChina Symposium on Sustainable Steelmaking Technology 2018 - Tianjin, China
Duration: 24 Oct 201826 Jun 2019


ConferenceChina Symposium on Sustainable Steelmaking Technology 2018

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