A replacement of seacoal with causticized lignite has the potential to reduce foundry emissions.
The results of a study suggest that a replacement of 3-5% seacoal with causticized lignite in bentonite -based pre-blend could translate into a reduction in total emissions between 9-15%.
SOURCE:
Modern Casting / Green Sand Emissions and the Concentration of Carbonaceous Additives
https://www.qgdigitalpublishing.com/publication/?m=55001&i=637245&p=28
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