Chemical grade limestone and dolostone

Our chemical grade limestone or dolostone is used in the ironmaking process to adjust basicity and generate the slag, which removes impurities from iron ore while making liquid pig iron or DRI. 

tons of steel / a year
satisfied clients
years of expertise

Key Considerations

  • Optimum chemistry and purity
  • Proper sizing
  • High, specific levels of calcium carbonate, magnesium carbonate, or both
  • Low levels of residuals including silica, clay and organic matter

Good to know:

  • Limestone is added to iron sinter and pellets to add flux and promote agglomeration
  • Blast furnaces can also add it directly to the burden to promote slag formation and protect the refractory