섬유

the influence of sulfur on interfacial reaction kinetics in the decarburization of liquid iron by carbon dioxide

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 347
the kinetics of decarburization of continuously carbon-saturated liquid iron by co/sub 2/ have been studied between 1280 and 1600 degreesc at sulfur concentrations between 0.01 and 1 wt. pct. the results are consistent with a surface blockage mechanism by chemisorbed sulfur which shows an essentially ideal adsorption isotherm. the adsorption coefficient of sulfur, in (wt pct)/sup -1/, is given by the equation logk=3600/t+0.57 for carbon-saturated alloys. a small residual rate at apparent surface saturation is observed. this leaves about 1.4 pct of the active surface sites available for reaction, essentially independent of temperature. studies with varying carbon concentration suggest that to a first approximation, and above about 3 wt. pct c, the adsorption equilibrium for sulfur depends only on the thermodynamic activity of sulfur
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