Ferro Silicon Introduction 

Ferro silicon is widely used in the steel making, iron casting, low-carbon ferroalloy producing:

   1 In the steel making field, Ferro silicon is used as deoxidizer and alloying agent to precipit and diffuse deoxidation. Adding a certain amount silicon of fe-si to the steel can obviously improve the strength ,hardness ,elasticity and permeability of steel.

   2 In the iron casting,it is used as ball mile agent and alloying agent especially in the nodular iron casting, Adding ferrosilicon to cast iron ,it can prevent the formation of carbide and promote the precipitation of graphite and the nodulizing. then the mechanical capacity can be the same of steel's.

   3 High-silicon ferrosilicon can be used for the production of the low-carbon reductant in ferro alloy industry.

   4 In addition, ferro silicon powder can be used as a suspended phase in the mineral processing industry and coatings for welding electrodes in the electrode manufactruing.

Speciafication

Ferro Silicon(FeSi) is a co-product of Brown Fused Alumina during fusion,so also called Brown Fused Alumina Slag. During fusion of aluminum oxide based bauxite, heavy elements in the electric arc furnace goes down to bottom of the furnace. After cooling down, they become silver/grey ores which contain Ferro and Silicon. In our industry, we call them Brown Fused Alumina Slag.

After crushing and sizing, it's made into different grits suitable for steel making industry as media separation or sink float process to remove oxygen from high quality steel or cast iron. Main users of FeSi are producers of alloyed, carbon or stainless steel.

According to content of Ferro, we make mainly 2 quality: 72% Ferro FeSi and 80% Ferro FeSi.
Chemical Content of Brown Fused Alumina Slag(Ferro Silicon/FeSi)

Brown Fused Alumina Slag Ferro Silicon (FeSi)