A Ferro-alloy is the most efficient and economic way of introducing alloying elements into iron and steel melts in order to produce the required grades; the ferro-alloys list therefore covers a wide range of elements which are needed for modern iron and steel metallurgical processes.
It is commonly accepted that ferro-alloys are divided into two main categories:
Various products are usually associated with ferro-alloys, either because they are produced by the same or comparable processes, or because they are used by the same customers (magnesium, calcium and its alloys).
Silicon is a metalloid used mainly in the manufacture of silanes, silicones and silica, as a “hardener” or alloying element to produce aluminium alloys, and in the manufacture of micro-processors and solar cells. Silicon is also used as a secondary smelting additive in the manufacture of photonic devices and in the manufacture of industrial refractories.
Silica fume, a mineral composed of ultrafine spheres of amorphous silicon dioxide (SiO2),