Ferrotungsten is an iron alloy series (tungsten content: 70%-80%). It is an alloy composed of tungsten and iron and is used as an alloy additive for steelmaking. Commonly used ferrotungsten contains 70% and 80% tungsten. Ferrotungsten production method: The agglomeration method uses an open electric furnace that can be moved on the track and the upper section of the furnace body is detachable, and carbon is used as the reducing agent. The mixed charge composed of refined tungsten ore, pitch coke (or petroleum coke) and slagging agent (bauxite) is added to the furnace in batches. The metal refined in the furnace is generally viscous. As the thickness increases, the lower part gradually solidification.