Wolfram – Ores & concentrates (primary raw materials)
- Our own mine in Mittersill
- Recycled Material
- Purchased tungsten concentrates from mines throughout the world; and in order to level out peaks in consumption
- Supply of semi-finished products from other selected tungsten smelting plants.
WOLFRAM is the only integrated tungsten smelting plant outside Asia and Russia. Therefore, we have expertise in all aspects of the process, from exploration through to the finished products. We are the preferred partner for new mining projects due to our experience and competence in mining and processing of tungsten ores.
WOLFRAM purchases raw materials from producers around the world. Our suppliers are both large industrial mines as well as cooperative and small-scale mines in Africa or South America. Many of our suppliers have a long standing relationship with WOLFRAM, leading to benefits such as technical support. All deliveries must fulfil the strict standards in regards to ethical supply and the traceability through the supply chain.
There are only two economically important ore minerals for tungsten:
Calcium tungstate, “white” tungsten ore, fluorescent in UV light. Can be enriched by gravity methods or flotation.
Iron/manganese tungstate, “black” tungsten ore, can be enriched by gravity methods and magnetic separation.