Thermodynamics of carbon removal by molten slags from manganese alloy melts

J. H. Park, G. H. Park, C. I. Park, J. G. Park, D. J. Min, H. C. Jo, Y. E. Lee

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

1 Citation (Scopus)


The carbon refining ability of the CaO-SiO2-MnO slag was measured at 1773 K by employing a carbide capacity concept. Also, in-situ dissolution behaviour of SiC particle into the slag was directly observed by using a confocal scanning laser microscope (CSLM) at 1873 K. The carbide capacity was confirmed to be strongly dependent on the basicity and the stability of carbide ions. The carbide capacity also increased with increasing optical basicity of the slag, indicating that the optical basicity can be applied as a measuring index for the carbide capacity of MnO-containing slags. In the CSLM experiments, the SiC particles continuously dissolved into the slag through the wetting phenomena by molten slag and followed by the evolution of gas bubbles. The more basic slags enhanced the wetting of SiC particle by the slag. The fine bubbles were probably believed to be Mn(g) and CO(g) produced from the reaction between SiC particle and MnO in the slag. The more basic slag also seems to increase the apparent dissolution rate of SiC particles due to lower viscosity.

Original languageEnglish
Title of host publicationProceedings of the 12th International Ferroalloys Congress
Subtitle of host publicationSustainable Future
Number of pages10
Publication statusPublished - 2010
Event12th International Ferroalloys Congress, INFACON 2010 - Helsinki, Finland
Duration: 2010 Jun 62010 Jun 9

Publication series

NameProceedings of the 12th International Ferroalloys Congress: Sustainable Future


Other12th International Ferroalloys Congress, INFACON 2010

All Science Journal Classification (ASJC) codes

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


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