Explanation
Iron and alloy of tungsten, which are mainly used as alloy additive, usually contain 70%~80% of tungsten. The main production method is to take iron, with tungsten concentrate as raw material, pitch coke and ferrosilicon as reducing agent. They are melting in electric furnace, and the semi molten state is taken out of the furnace by iron digger.
Classification
Metals -> Steels -> Iron