Kola GMK, a subsidiary of Norilsk Nikel, says two converters designed to improve the efficiency of the induced-draft fan are installed at the smelter in Nikel. The fan draft sulfurous gas from the converter to the fabrics sulphuric acid production unit, by strengthening the stream jets at the point where the air and gases leaves the smelter.
The frequency converters are produced by ABB and bought by Kola GMK for 20 million rubles (€0,5 million), reports the company in a press-note.
The new technique will enable to recycle more of the sulfur dioxide (SO2) instead of just blowing it out of the roof, windows and chimneys.
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The company does not say how much the SO2-emission is reduced following the new installations.
The smelter in Nikel near the Norwegian border is by far the largest air-polluter I the Barents Region, with an annual emission of around 90.000 tons of SO2. That is five times the total emission of SO2 in the entire Norway.
