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¡¡¡¡Elkem Carbon is the pioneer of Soderberg Electrode Paste
(SEP). Elkem¡¯s Carl Wilhelm Soderberg invented the self-baking
electrode in Norway in 1917, and electrode paste for ferroalloy
furnaces has ever since the inception carried his name. Elkem¡¯s
Carbon Division has continued the research in this field since
the early discovery, and is today the World¡¯s largest, as
well as the most knowledgeable, producer of SEP.
¡¡ Since start-up in the 4th quarter of 2000, ECC has refurbished,
and upgraded the major production process with Elkem technology.
Now ECC has a total capacity of 15,000 MT of electrically
calcined anthracite (ECA), or 20,000 MT of Standard Electrode
Paste (SEP). In 2002 ECC also introduced new products for
special applications, like ramming paste for aluminium cells
and special composite paste for certain high load ferroalloy
operations. Usually, most customers put the stability of product
quality as their first priority.
¡¡ Fluctuations in the quality of electrode paste may lead
to operational problems in smelting furnaces. With highly
consistent raw materials, unique technical process and management,
Elkem Carbon (China) Co. Ltd ensures a very stable quality
in the end products, which reduces the possibility of furnace
problems.
¡¡ As of today, ECC has built up a customer base in Asia Pacific,
such as Korea, Japan, India, and Australia. Combining the
advanced production and management skills with the real situation
in China, Elkem Carbon (China) Co. Ltd focuses on continuous
improvement to provide best quality product and technical
service to customers throughout the region.
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Electrode
Paste
¡¡¡¡ECC produces Sderberg Electrode Paste in various specifications
depending on the customers¡¯ furnace size and product application.
Meanwhile, it can customize packing and transportation
modes according to customers¡¯ requirement. For furnaces
with large diameter, and high load electrodes (FeSi, CaC2,
FeCr, SiMn), cylinders with softening point 63 ¡ãC is generally
recommended. For smaller furnaces with low load electrodes
(FeNi, Cu), briquettes with a higher softening point 80¨C90¡ãC
will normally be the preferred choice. Generally, however,
the decision on whether to use cylinders or briquettes
are is very much related to the paste melt-down pattern
experienced for the individual customer, and varying heat
conditions for the customers will eventually be reflected
in the choice of both shape and softening point. For certain
customers a combination of the two products might be an
ideal choice. |
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Ramming Paste
¡¡¡¡Cold ramming paste is widely used in aluminum electrolysis
cells, blast furnaces and other smelting furnaces. The
temperature window of Elkem T type lining paste is 17-42
¡ãC, which eliminates the environmental pollution caused
by heating of conventional ramming paste. The paste is
produced according to the ISO standards, with a good thermal
shock resistance, low baking shrinkage (<0.15%), good
rammability and no lamination. Elkem provides customers
a penetrometer free of charge used to measure the green
density in site.
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Electrically
Calcined Anthracite
¡¡¡¡ECC has two calcining furnaces, each with an annualcalcining
capacity of 7,500 MT. Both were erected in 2000, and are
of Elkem design and technology. ECC produces high quality
Electrically Calcined Anthracite (ECA) with resistivity
in the range of 400-700 ¦Ì¦¸m. This ECA is either used as
dry aggregate in the further production of SEP, or supplied
to aluminium customers in the Asia / Pacific region, as
well as to Europe. The ECA to aluminium is predominantly
utilised in either cathode blocks or ramming paste. ECC
utilises only the best available Chinese anthracite as
raw material, with strict specifications related to various
applications. |
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¡¡¡¡Elkem
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