Silicon is the most abundant element on the earth's surface and
in the form of silica is consumed in a great number of industrial
uses.
Silica has many industrial
applications in abrasives and polishes, in glass manufacture, fillers
and extenders, silica brick manufacture, as a catalyst, in specialty
coatings, cleansers, ceramics, electronics, optics and refractories, in
ferro-silicon manufacture, rubber, and as a frac sand.
Processing of silica of
specific quality yields several types of specialty silicas. These
include colloidal, fumed, fused, high purity ground, silica gel, and
precipitated silica.
Colloidal silica is mainly
used as a high temperature binder for silicon wafer polishing and
carbonless paper. Fumed silica, because of its unique strength,
thixotropic properties and flatting properties, is a valuable ingredient
in rubber, plastics, specialty coatings, adhesives, cement and sealants;
and aids in manufacturing pesticides, cosmetics, pharmaceuticals,
defoamers, inks, abrasives and batteries.
Fused silica is produced by
fusion of very high quality silica sand feedstock in electric arc and
resistance furnaces. The resulting product is very different from the
original silica sand due to the extremely high quality, consistent
chemistry, high resistance to thermal shock and low thermal
conductivity. It is therefore suitable as a filler for electronic
encapsulants, refractory and investment castings and specialty
coatings.
High purity ground silica is
produced from silica sand or soft, friable rocks and is often referred
to as amorphous silica. It is used mainly in specialty coatings,
plastics, rubber, electronics, abrasives, refractories and optics
depending on average particle size, distribution, hardness and
refractive index.
Silica gel is an extremely
pure, porous, and amorphous form of silica known for a high degree of
internal surface area, hardness, uniformity and chemical inertness. Its
ability to absorb liquids makes it valuable in a wide variety of
applications including catalysts, anticaking agents in food and
pharmaceutical products, desiccants, cosmetics, plastics, specialty
coatings, paper and adhesives.
Precipitated silica is
another type of specialty silica which is mainly used as a reinforcing
agent in tire compounds. Its properties also provide anticaking,
conditioning, suspension, and viscosity control in products like tooth
pastes, deodorants, nail polishes and vitamin tablets.
SILICA SAND IN
TANZANIA
High Purity (>98 per cent
SiO2)
Silica sand is suitable for manufacturing glass bottles, fibreglass
insulation and sand blasting occurs in many locations in Dar es
Salaam Region and Bagamoyo plus also Bukoba there is a huge
deposits of Complete clean Silica Sand. Before in Bukoba Region
during the colonial rule there was an in industry which was
manufacturing Glasses in the back 1950s the Industry after the Tanzania
Independence it was closed. In Dar es Salaam Region there is also a
Glass Industry called Kioo Ltd, this industry produces all its glass
products with the Silica Sand from Dar es Salaam
Region.
In
order for the Silica sand to produce High Quality Glass the Silica Sand
must have a higher Silicon Oxide Content and the content should be
more than 98% of SiO2 and should have a lower Iron Oxide (FeO2).If
the sand will have a higher Iron (Fe) then the end product will
have dark impurities.
SILICA
SAND SHIPMENT FROM TANZANIA PORT.
We
can ship even at 1 go about 500,000 tons but due to the limited
Ships then we can only ship at least about 5000 tons. Mostly our
Silica Sand is parked in Polythene bags of 50 kilograms
weight.
We
have received many emails from different clients around the world who
are requesting for parking the Silica Sand as a loose cargo, that means
just parking the Silica Sand over the whole board of the
ship without any bags or containers. For that way or parking the cargo
that means the Client will have to rent the whole Ship which
is highly cost. So normaly we do park it mostly be in
50 kilograms polythene bags then stuffed in either 20 FT containers or
50 FT containers. The major ports in Tanzania are in Dar es salaam and
Tanga and sometimes there is a limitation also of hired Containers and
that limit the shipping of the cargo.
Also
for the cargo that has been shipped from Dar es salaam to either
China then a cargo which does pass this route will have to be to
take Transhippes routes, That means a cargo will leave Dar
es Salaam port then leave for either India, Then over there in india
will have to be unparked and then parked to the ship leaving India for
China. Its very very difficult to get a ship leaving straight from Dar
es salaam to either China or Brazil this are very far routes and under
any no circumstances the cargo will have to be transhipped to this
Destinations of either far East of Far
West.
Should
a client have is own ship which can come over to Tanzania, Dar es salaam
or Tanga port then even 500,000 tons can be picked at once
of Silica Sand.
OUR STOCKS / ORDER
SPECIFICATIONS
Silica Sand Chemical Data Sheet
Analysis.
Minimum Order Supply - 500
TONS.
Maximum Supply Per Order -
10,000 TONS.
SHIPPING COSTS (FOB/CIF), SEND US AN EMAIL FOR THE
QUOTATION.
sales@seabgems.com
