TECHNICAL INFORMATION
Applications for char
Australian Char’s unique properties have led to a broad range of
applications in process industries requiring a pure elemental carbon in
lump form. The following notes provide a guide to major applications.
- Ferroalloys: As a reducing agent for the production
of silicon, ferrosilicon and ferrochrome in electric furnace processes,
char offers low sulphur content, low ash content, low bulk density,
high porosity, high reactivity and also high electrical resistivity,
which is conducive to good overall heat distribution. The low level
of inorganic constituents and trace elements in the char is of considerable
benefit to the production of high purity ferroalloys.
- Carbon Control: For carbon control in the steel and
iron industries, the purity of char is attractive, the low sulphur content
a necessity, and the low ash/high carbon content assists rapid dissolution.
Char is suitable as a recarburiser for steel in the ladle and it has
been shown to be satisfactory for the production of grey cast irons
from steel scrap in an induction furnace. A finely sized char has been
found effective for use as an inject carbon in EAF (Electric Arc Furncace)
steel production.
- Activated Carbon: Due to its high surface area combined
with relatively high density, char activates readily and with good yields
to produce high quality activated granular and powder carbons for the
control of water and atmospheric pollution, and various liquid and gas
phase absorption processes.
- Water Filtration: Our char has a large internal surface
area and level of purity that makes it a premium filtration medium.
Char is used in leading edge, water treatment programs contributing
to environmental sustainability. Auschar has passed the requirements
of "European Standard Draft pr EN12915 (May 1997) Product used
for treatment of water intended for human consumption - Granular activated
carbon". Char can be used as a filter medium in the important recycle
process of producing drinking water and foodstuffs from industrial waste
water.
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