Nordkalk's Köping plant has to change the limestone feed type on a daily basis, to meet market demands for various products.
ABB Ability™ Expert Optimizer was successful in quickly stabilizing the kiln after each type change. The emissions control module controlled the addition of dust, lime and waste oil to limit the emissions of HF, HCl, SO2 and Nox. This area of control, along with efficient alternative fuel consumption, proved to be very useful for the kiln operators. The grate cooler control improved bed depth stability, which led to increased heat recovery and lower product temperatures.