Novel technology to produce ferromanganese alloy from Steelmaktng slag

Sun Joong Kim, Hiroyuki Shibata, Shin Ya Kitamura, Katsunori Yamaguchi

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

Abstract

Manganese is an important alloying element for the production of high-grade steel. In Japan, the total amount of Mn disposed of annually in steelmaking slag is close to the amount of imported Mn. Therefore, steelmaking slag can be considered as a Mn resource. Although ferromanganese alloys can be produced by the reduction of steelmaking slag, P content in the product is too high and Mn content is too low, preventing the use of these alloys for the steelmaking process. The separation of P from Mn and increase in the Mn/Fe ratio is thermodynamically possible via the formation of liquid sulfide (matte). High-purity ferromanganese alloys can be obtained by the desulfurization (oxidation) of the formed sulfide. A fundamental experiment to clarify the distributions of Fe, Mn, Ca, and P between matte and steelmaking slag was conducted, and it was found that P was not distributed in matte. Moreover, the separation of P from Mn was confirmed.

Original languageEnglish
Title of host publicationProceedings of INFACON XIII - 13th International Ferroalloys Congress
Subtitle of host publicationEfficient Technologies in Ferroalloy Industry
PublisherPublic Association INFACON XIII
Pages655-662
Number of pages8
ISBN (Electronic)9965729344, 9789965729348
Publication statusPublished - 2020
Externally publishedYes
Event13th International Ferroalloys Congress: Efficient Technologies in Ferroalloy Industry, 2013 - Almaty, Kazakhstan
Duration: 2013 Jun 92013 Jun 12

Publication series

NameProceedings of INFACON XIII - 13th International Ferroalloys Congress: Efficient Technologies in Ferroalloy Industry

Conference

Conference13th International Ferroalloys Congress: Efficient Technologies in Ferroalloy Industry, 2013
CountryKazakhstan
CityAlmaty
Period13/6/913/6/12

Keywords

  • Manganese
  • Matte
  • Phosphorus
  • Recycling
  • Steelmaking slag
  • Sulfurization

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Renewable Energy, Sustainability and the Environment

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