The Study of Hot Metal Dephosphorization by Replacing Part of Lime with Limestone

  • Haohua Deng
  • Min Chen
  • Nan WangEmail author
  • Guangzong Zhang
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


The study of hot metal dephosphorization by replacing part of lime with limestone at temperature of 1350–1400 °C has been carried out in this work, and the effects of slag temperature and substitution proportion of limestone were examined. Moreover, the influence of limestone decomposition and dissolution on the dephosphorization rate of hot metal was also investigated. It was found that adding limestone instead 50% in mass of lime and the intensive endothermic reaction of limestone decomposition would reduce the slag temperature and increase the slag viscosity. The dynamic condition of dephosphorization was obviously deteriorated, and the dephosphorization rate of hot metal decreased at 1350 °C, while the thermodynamic condition of dephosphorization could be improved and the dephosphorization rate of hot metal increased at 1400 °C.


Dephosphorization Limestone Hot metal Decomposition 



The authors gratefully acknowledge the National Natural Science Foundation of China (51574065, 51574066, 51774072 and 51774073) and the National Key R&D Program of China (No. 2017YFB0304201, 2017YFB0304203, 2016YFB0300602) which have made this research possible.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Haohua Deng
    • 1
  • Min Chen
    • 1
  • Nan Wang
    • 1
    Email author
  • Guangzong Zhang
    • 1
  1. 1.School of MetallurgyNortheastern UniversityShenyangChina

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