Improved Burnability Using Mineralizers

Mineralizers are substances which promote the formation of clinker compounds without participating in the formation reactions, and can generally lower the temperature at which the clinker melt begins to form. Fluorides are particularly effective and strongly promote the formation of tricalcium silicate and reduce the lower temperature limit of the C3S stability range. The fuel energy demand is reduced since the sintering zone temperature needed for clinker formation is lowered by using mineralizers. The potential of this technology is rather limited because while the addition of mineralisers in smaller quantities can improve product quality, larger quantities may have adverse impacts on product quality and kiln operation due to coating formation. 

Development Status Products
Commercial

Improved Burnability Using MineralizersCosts & Benefits

Parent Process: Clinker Making
Energy Savings Potential

Based on the modelling results, thermal energy consumption can be reduced by between 0.05 to 018 GJ/t clinker. 

CO2 Emission Reduction Potential

CO2 emissions can be reduced by 4 to 16 kg per ton of clinker

Costs

Additional costs of mineralizers has to be considered and may outweigh the fuel cost savings.  Espeically CaF2, which is commonly used, is an expensive material.  Use mineral wastes containing flourides can be economically viable, however, such materials have a limited availability. 

Improved Burnability Using Mineralizers Publications

Development of State of the Art Techniques in Cement Manufacturing: Trying to Look Ahead

The report represents the independent research efforts of the European Cement Research Academy (ECRA) to identify, describe and evaluate technologies which may contribute to increase energy efficiency and to reduce greenhouse gas emissions from global cement production today as well as in the medium and long-term future. 

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