NTE (NOL-TEC Europe) DRI plants:
• Lime Coating System
In DRI plants, they add lime to iron ore pellets before charging them into the kiln to prevent adhesion of pellets and cluster formation in kiln. Normally for each ton of pellet, they add 2- 2.5 Kg. of lime depending on chemical composition of pellet. This system is comprised of a LIW feeder in which dose of lime injection is controlled based on weight of the discharge hopper in a feedback controlling mechanism. The feedback of the system will control the variable speed drive of a screw feeder.