Throughout its history, Figener has carried out projects for modifications in Furnaces and Gas Exhaust Systems for Ovens and Dryers, normally seeking to increase capacity. In 2007/2008, FIGENER participated in modifications in auxiliary systems of Ferro-Nickel Furnace.
IRON CALCIFICATION OVEN
FIGENER performed the following activities:
- Conceptual Study for Increasing Oven Capacity
- New heat exchanger project (Pre-Air);
- New burner design;
- New cyclone project;
- Design of new pipelines/interconnections;
- Specification of new fans.
Main challenges:
- Fuel used has a sulfur content, which compromised the life of the exchanger;
- Burner that uses 2A heavy oil, with a burning capacity of up to 1600 kg/h and fine chip injection to correct fixed carbon content in the calcined ore load;
- Cross-flow heat exchanger, 15 m high and 1800 m².