Fine-crushed limestone is traditionally used as a flux in the sinter plant because it plays a vital role in the formation of slag in the subsequent blast furnace process. Alternatively, quicklime can be used to increase sinter plant production.

The very low emission levels which are being imposed for flue-gases, as well as for dioxins and furans, call for a highly effective reagent, and a process that can easily be incorporated into existing installations. For flue-gas treatment in a dry sorption system, SO₂ and other acid gases can be neutralised with hydrated lime. Sorbacal^® SP is a lime with a high porous volume, which has been especially developed to increase the efficiency of dry flue-gas cleaning systems.

To content with dioxins and furans, Lhoist delivers tailor-made mixtures of lime with activated carbon, lignite coke or bentonite, which combine the neutralising effect of lime and with the micro-pollutant capturing power of the additives. This formula means you avoid the negative side-effects associated with injection of pure activated carbon.