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Energy balance of the reduction process of iron-bearing waste materials

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The metallurgical industry is a trade where large amounts of waste are generated, including mill scale and iron-bearing sludge, which in the reduction process can be a valuable raw material for the production of sponge iron. In this publication the energy balance for such a process has been prepared and it has been shown that the electrical energy flow necessary to carry out reduction of mill scale with a CO + H 2 gas solution is 17.48% of the total energy stream supplied to the process. The highest value of the supplied energy stream is chemical energy brought with a reducing gas of approx. 71.65%. The largest energy losses occur in gaseous products of reduction and constitute 57.15% of the total energy flux of products. Raising the temperature of the reaction gas from 25°C to 300°C reduces the electricity consumption about 14%. The determined energy losses to the environment are strongly dependent on the final design of the reactor for the reduction of iron-bearing materials.

Original languageEnglish
Title of host publicationMETAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings
PublisherTANGER Ltd.
Pages149-156
Number of pages8
ISBN (Electronic)9788087294840
Publication statusPublished - 2018
Event27th International Conference on Metallurgy and Materials, METAL 2018 - Brno, Czech Republic
Duration: 23 May 201825 May 2018

Publication series

NameMETAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings

Conference

Conference27th International Conference on Metallurgy and Materials, METAL 2018
Country/TerritoryCzech Republic
CityBrno
Period23/05/1825/05/18

Keywords

  • Energy balance
  • Iron-bearing waste materials
  • Reduction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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