Atomized Ferrosilicon Powder FeSi15 As A Heavy Medium For
Separation Plants Treating Iron And Other Ores
(containing approx. 15% Si) for constitution of heavy media is used
today in many separation plants treating iron and other ores. The
production of the powder by grinding is expensive. A new process
atomizes the still molten ferrosilicon by air or steam.
In a heavy medium this atomized ferrosilicon powder has several
remarkable properties: The round form and smooth and shining
surface of the individual grain offers greater resistance to
corrosion, especially as no contamination is produced between iron
and silicon during the process. The viscosity of the heavy media
pulp for the same weight of pulp is less than for ground
ferrosilicon, i. e. for the same viscosity a greater pulp density
can be attained. This might be of importance in future.
Adhesionloss is lower for atomized ferrosilicon. The strength of
the atomized powder is equal to that of the ground powder.
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Size:65D, 150D, 270D, 100mesh, 200mesh, 325mesh, or as customer required
Ferrosilicon Powder Application:
The use of ferrosilicon powder has risen with the increasing
employment of heavy media separation for ores, particularly in the
separation of iron ores. In the separation of lead and zinc ores,
ferrosilicon is a foreign body and the use of galena as a heavy
medium would seem indicated; yet ferrosilicon has largely replaced
galena for this work. The reason for it is that ferrosilicon
possesses good magnetic properties which can be used to recover it
from fouled medium. Galena can only be recovered by flotation. In
contradistinction to other heavy media like magnetite, ferrosilicon
has the advantage of a high specific gravity and of greater
Packing with good condition ready to delivery in stock .
Ferrosilicon contains a little phosphorus metal compounds like
calcium phosphide, during transportation or warehouse storage, if
damp, it can emit phosphine which make people poisoning
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