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Effect of carbon on the solubility of nitrogen in slag

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Published/Copyright: August 7, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 8

Abstract

The effect of carbon on nitrogen solubility in slag was investigated for the ternary CaO–MgO–SiO2 and the quaternary Al2O3–CaO–MgO–SiO2 slag systems at 1873 K under controlled oxygen and nitrogen potentials. Gas–slag equilibration experiments were conducted using molybdenum and graphite crucibles. In the absence of carbon, the nitrogen solubility was very low. The presence of carbon greatly increased the nitrogen solubility in slag. The total nitrogen content was found to increase with SiO2 and MgO concentration for the carbon saturated slags. Low levels of cyanide were found by wet chemistry with considerable uncertainty. The results analyzed by different methods ruled out cyanide formation being the main reason for the large increase in nitrogen solubility in the presence of pure carbon.

Keywords: Nitrogen; Solubility; Slag; Cyanide; Nitride
* Correspondence address, Prof. Du Sichen, Department of Materials Science and Engineering, KTH Royal Institution of Technology, Brinellvägen 23, SE-11428 Stockholm, Sweden, Tel.: +46-(0)8-7908359, Fax: +46-(0)8-7900939, E-mail:

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Received: 2015-01-23
Accepted: 2015-03-23
Published Online: 2015-08-07
Published in Print: 2015-08-11

© 2015, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111253
Keywords for this article
Nitrogen; Solubility; Slag; Cyanide; Nitride

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of carbon on the solubility of nitrogen in slag
  5. Phase equilibria investigations and thermodynamic modeling of the PbO–Al2O3 system
  6. Experimental investigation of the phase equilibria in the Co–Fe–Ti ternary system
  7. Microstructural investigation on marforming and conventional cold deformation in Ni–Ti–Fe-based shape memory alloys
  8. Modeling of hot deformation behavior with dynamic recrystallization in TC4 titanium alloy
  9. Powder metallurgy of high speed-steel produced by solid state sintering and heat treatment
  10. Effect of annealing and surfactant on photoluminescence of ZnS:O2− nanoparticles
  11. An experimental investigation into the effects of Cr2O3 and ZnO2 nanoparticles on the mechanical properties and durability of self-compacting mortar
  12. Optical properties and weakening of elastic moduli with increasing glass transition temperature (Tg) in (80–x)TeO2-xBaO-20ZnO glasses
  13. Simple fabrication of highly ordered anodic aluminum oxide (AAO) films
  14. Short Communications
  15. Launching particle to constant reinforcement ratio as a parameter for improving the nanoreinforcement distribution and tensile strength of aluminum nanometal matrix composites
  16. Manganese ferrite–graphene nanocomposite as a high-performance anode material for lithium-ion batteries
  17. Facile synthesis of TiO2 nanoplates decorated with Ag nanoparticles for electro-oxidation of hydrazine
  18. People
  19. People
  20. DGM News
  21. DGM News
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