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Dissolution Reaction of Earthy Graphite in Liquid Steel

  • Hongyan Yan
  • Xiaojun HuEmail author
  • Chao Luo
  • Jinglong Liang
  • KuoChih Chou
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Earthy graphite is an abundant natural resource with a high content of fixed carbon. It can be considered as a carbon source for steel carburizers. Also, it can reduce the production cost of enterprises. The study is aimed to clarify the kinetics of dissolution reaction and the carbon increase effect. The experiments were carried out by quartz tube sampling at 1873 K, with 0.1 and 0.4% theoretical carbon increase. Effect of added amount on S, N and O content in steel was studied. The results indicated that carbon increase effect was equivalent to some company carbon additives. The added amount of earthy graphite has little influence on S, N and O content. Considering the carbon oxidation reaction consumption during carbon dissolution process, a dynamic model was obtained and the reaction rate constant of the carbon dissolution reaction was calculated.

Keywords

Earthy graphite Dissolution Kinetics Liquid steel 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 51334001, No. 51804126, No. 51474019), Natural Science Foundation of Hebei Province (No. E2018209266) and Natural Science Foundation of Tangshan city (No. 17110208a).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Hongyan Yan
    • 1
  • Xiaojun Hu
    • 2
    Email author
  • Chao Luo
    • 3
  • Jinglong Liang
    • 1
  • KuoChih Chou
    • 2
  1. 1.College of Metallurgy and EnergyNorth China University of Science and TechnologyTangshanChina
  2. 2.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingHaidian District, BeijingChina
  3. 3.Hesteel Group Tangsteel CompanyTangshanChina

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