sponge iron industry –past-present-future - SIMA

cold strip, long products and quarto metal sheets is
just under 2 million tons. The Finnish plant in Tornio
is the affiliated group’s largest factory, and is unique
in that it has the only fully integrated production line.
The aforementioned production line starts in the EU’s
only chromium mine in Keminmaa, where
approximately 200,000 tons of lump ore and 400,000
tons of fine concentrate are produced every year.
The steel plant has two production lines: one with
100 tons and the other with 150 tons and converters
in which the melted ferrochromium is processed with
steel scrap. The warm rolling factory produces steel
with widths ranging from 1 to 1.6 meters and with a
thickness of up to 12 mm. Most of the coils made
there are then turned into acid-resistant stainless
steel sheets and plates at the cold rolling factory for
customers all over Europe.
Due to the high separation density necessary, the
alljig ® -jigging machine is in many cases the only
economical solution for producing high-quality metal
that can then be directly reprocessed metallurgically.
In addition, the cleaned slag can also be sold as
valuable aggregate for concrete or road construction.
In the first half of the decade, there was a great
demand in Western Europe and Africa for allmineral’s
innovative processing technology, but currently the
spotlight is on countries in the CIS. Initially, allmineral
set up two lines, each with two alljig ® -jigging
machines, for ferrochromium slag processing at the
Russian metallurgical plant Cheliabinsk (one of the
largest in Europe). Their throughput rate is 20 resp.
40 tons per hour and machine.
Now allmineral has received an order for two alljig ® -
jigging machines to be used for upgrading the raw
materials enrichment for ferrochrome-production, the
chromite ore itself. And following their first order for
an alljig ® -jigging machine in 2007, another chromium
ore processing plant, owned by the Kazchrom
company in Chromtau, Kazakhstan, has just ordered
another one.
Within a short amount of time, twelve alljig ® -jigging
machines for slag processing have been put into
operation: two in Belgium, four in South Africa, four
in Russia and two in Finland. In addition, there are
also the aforementioned four alljig ® -jigging machines
for chromite ore benefication for clients in Russia
and Kazakhstan. In total, allmineral has supplied over
400 alljig ® -jigging machines around the world, where
they are used to efficiently sort not only slag, but
also coal, ore, gravel, sand, crushed stone and
recycling materials.
Description “Alljig ® 2500 | Tornio
JANUARY-2011/37