alljig®-jigging machines in demand worldwide!

New installations in Northern and Eastern Europe

(PresseBox) ( Duisburg, )
Europe's largest stainless steel plant in Tornio, Finland - producing 1.7 million tons a year - recently opened a new slag processing plant in September 2010. The main components of this new plant are two powerful alljig®-jigging machines, ordered by TAPOJÄRVI, which runs the plant on behalf of OUTOKUMPU. The slag, a by-product of steel production, still contains 5 - 10 % metal, and the alljig®-jigging machines separate out this valuable metal for metallurgical reprocessing. The other product is metal-free slag that can be used as aggregate. As raw materials are becoming increasingly scarce, there is a growing trend toward economical processing of by-product slag from ferrochromium, ferromanganase and stainless steel production. In turn, there has been a noticeable spike in demand for alljig®-jigging machines, particularly in Northern and Eastern Europe. Within the last five years, allmineral has increased its market share there considerably - and it looks like things will only get better.

On September 8, 2010 the residents of the town of Tornio on the Finnish-Swedish border were treated to a special visit from Mauri Pekkarinen, the Finnish Minister of Economic Affairs, and the Senior Vice President of OUTOKUMPU. Both attended the official opening ceremony for the state-of-the-art processing plant at the largest stainless steel plant in Europe - which is also the biggest employer in the region.

TAPOJÄRVI will run the new plant that makes it possible to extract the last bit of valuable metal from stainless steel slag. Air-pulsed alljig®-jigging machines are the core equipment of this process, and take advantage of gravity by using the difference in metal and slag density to efficiently separate the two. These machines from Germany are designed for capacities of 50-100 tons per hour, while efficiently sorting particles ranging in size from one millimeter to 32 millimeters.

The Finnish corporate group Outokumpu is one of the largest producers of high-quality stainless steel worldwide. Its yearly melting capacity is around 2.5 million tons, and its rolling capacity for warm and 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.
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