JOURNAL ARTICLE

Effect of direct alloying of manganese ore–cored wires on the composition and quality of molten steel.

  • Published In: Ironmaking & Steelmaking, 2025, v. 52, n. 7. P. 739 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Wu, Wei; Zhao, Bo; Liang, Qiang; Lei, Ming; Zhang, Bo; Zhang, Fei 3 of 3

Abstract

This article investigates the effects of different manganese ore addition methods—top-slag addition and cored-wire feeding—on the quality and manganese yield of molten steel at 1550 °C. It finds that the cored-wire process, especially when using ferrosilicon as a reducing agent, achieves a higher manganese yield (93.46%) and produces inclusions with favorable size and density compared to top-slag addition. Thermodynamically, the reducing abilities of agents rank as aluminium block > silicon > silicon carbide > graphite, and the limiting mass transfer step differs by addition method: manganese transfer in molten steel limits top-slag addition, while manganese transfer in slag limits cored-wire feeding. The study also details how deoxidation methods influence inclusion types, with manganese sulfide dominating in nonaluminium deoxidation and alumina in aluminium deoxidation. These findings provide theoretical and technical support for advancing direct manganese-ore alloying in steelmaking, highlighting the cored-wire method with ferrosilicon as optimal for improving efficiency and steel quality.

Additional Information

  • Source:Ironmaking & Steelmaking. 2025/09, Vol. 52, Issue 7, p739
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2025
  • ISSN:0301-9233
  • DOI:10.1177/03019233241307487
  • Accession Number:188444630
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