Kiln 2 at the Robilante (Cuneo) plant was started up again in the middle of October after several important modifications were made to the pre-heater tower. The objectives of this three-year (2006-2009) project were as follows:
a) Increase the capacity of the kiln by reducing the drop in the gas system
b) Use more waste-derived fuels and at the same time improve gas retention in the pre-calciner and significantly reduce CO in the stack.
These objectives were achieved by the following operations:
- Replacing and/or modifying all the tower cyclones, from the 1st-4th stage
- Completely replacing the pre-calciner and increasing its volume.
These upgrades allowed us to increase the production capacity of the kiln from 1,800 tons/day to 2,200 tons/day. In addition to the upgrades to the tower, the kiln’s electrofilter was also converted into a baghouse.
The last step of this modernization project is to build a new 60-meter concrete stack with a diameter of 3.6 meters. Construction is currently underway and is expected to be completed by spring.