CHEMICAL GRADE LIMESTONE

Our chemical grade limestone is used in the ironmaking process to produce the slag, which removes impurities from the iron ore while making liquid pig iron. Limestone is added to iron sinter and pellets to add flux and promote agglomeration in your products. Blast furnaces can add limestone directly to the burden to promote slag formation and protect the refractory.

Key Considerations

Several needs should be taken into consideration when selecting the right product for your ironmaking process:

Chemistry of the iron ore
Limestone sizing

Critical parameters	Typical consumption (Kg/ton)
1. Grain size 2. MgO content 3. Lower content of SiO2, MgO, Al2O3, and Sulphur	Limestone: 100 – 150 Lime: 0 – 25

Your Benefits

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

Agglomeration and Sintering
1. Granulometry control helps uniform blending impacting permeability of the charge mix
2. Burnt lime improves heat transfer in sintered layer, thanks to calcination
3. Burnt lime improves productivity by about 20% and production cost

CHEMICAL GRADE LIMESTONE

Key Considerations

Your Benefits

Compliance Concerns