PM Kaldo TBRC furnace

Flexible solution for a wide range of processes and materials with the highest environmental performance and operational flexibility.

Kaldo Furnace technology

The Kaldo Furnace technology is a flexible solution for smelting and converting various primary and secondary raw materials such as concentrates, copper scrap, e-waste and precious metals anode slimes. Metso PM Kaldo Furnace, equipped with advanced charging and off-gas systems allowing a very compact plant layout and operational flexibility.

Instead of using separate vessels for smelting, reducing and converting, all these steps can be executed in a single vessel. The system is fully encapsulated by a furnace casing, thus facilitating ventilation of the whole section, including the ladle car below the furnace. Stray emissions are prevented and a good and safe working environment is provided. The heating and converting processes are performed by introducing a water-cooled burner and converting lances mounted in lance wagons with a hydraulic drive. The cooling system is equipped with a reliable security system for preventing water leakages. A Multi Purpose Utility Lance can also be added for flame monitoring, temperature control and refractory wear measurement.

Metso has continuously developed the Kaldo Furnace since the 1970s and has designed and delivered over 20 Kaldo Furnaces worldwide.

Main features

Very flexible TBRC technology for processing a variety of materials
Commonly used for treating copper anode slimes and other materials containing precious metals
Burner fuel type can be selected according to customer requirements
Operated in batches
Compact equipment
Batch furnace available in different sizes from 0.8 to 16 m3 working volume
Advanced hydraulic system provides smooth tilting and rotating functions
Charging and mixing system for accurate filling
Quick and easy replacement of a worn-out vessel with a relined one by simply lifting vessels out/in with an overhead crane