-
Ferrosilicon, or ferrosilicium, is a ferroalloy an alloy of iron
and silicon with between 15 and 90% silicon.
- Ferrosilicon
contains a high proportion of iron silicides.
- Its melting
point is about 1200 °C to 1250 °C with a boiling point of 2355 °C.
- Ferrosilicon
contains about 1 to 2% of calcium and aluminium.
- Ferrosilicon
is used in steelmaking and foundries as a source of silicon in
production of carbon steels, stainless steels, and other ferrous
alloys.
- Ferrosilicon
is used for inoculation of the iron to accelerate graphitization.
- Ferrosilicon
is also used in the Pidgeon process to make magnesium from
dolomite.
- Ferrosilicon
is a basis for manufacture of prealloys like magnesium
ferrosilicon (FeSiMg), used for modification of melted malleable
iron.
- Ferrosilicon
is produced by reduction of silica or sand with coke in presence
of scrap iron, millscale, or other source of iron.
-
Ferrosilicons with higher silicon content are made in electric arc
furnaces.
- Ferrosilicon
is also important as an additive to cast irons for controlling the
initial content of silicon.
- Ferrosilicon
is used by the military to quickly produce hydrogen for balloons
by the ferrosilicon method.
- VBC is
focused in the manufacture of bulk ferro alloys like Ferro
Silicon, Ferro Chrome and Silicon Manganese which are used in the
steel industry as alloying agents for the manufacture of various
grades of alloys steel.
- Imports of
ferrosilicon from Brazil, China, Kazakhstan, Russia, Ukraine, and
Venezuela found to be sold at less than fair value.
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