Robust, safe, and easy to operate, our DC furnace solutions are custom-designed for each individual application. The optimized furnace and feed system layout makes it a highly cost-efficient solution.
- Continuous electrical direct current supplied by transformer and rectifier
- Graphite electrode forms negative cathode and the bottom of the furnace the positive anode
- Smelting energy supplied by open plasma arc
- Raw material reduced at high temperature with carbon reductant such as anthracite or coal
- Alloy sinks to the bottom and slag floats at the top; these are tapped intermittently through dedicated tap holes
- Off-gas, mainly carbon monoxide, is cleaned and can be reused as combustible fuel
Cost-efficiency is further improved with the possibility to use cheaper, lower-grade reductants such as anthracite or coal. We can provide a complete solution for a wide range of production capacity requirements, with typical furnace power ranging from 10–45 MW. Our offering includes proprietary technology, process design, and fabrication services, as well as supervision, training, and operation and maintenance services.