2.C.2 - Ferroalloys Production

Last updated on 29 Dec 2016 11:45 (cf. Authors)

Short description

Source category Ferroalloys Production is of minor significance and not a key source.

Ferroalloys are nonferrous metal aggregates that are alloying agents for the steel production. Germany has five producers of ferrochrome, silicon metal and ferrosilicon; these materials are used as alloying agents in stainless-steel production. Activity data can be obtained from the national official statistics for 2001 to 2006 and from the British Geological Survey (BGS) for 1990 to 2007 - with the latter being almost 50% higher. Due to consistency of time series, available data from the BGS are used for the whole period 1990 - 2015. In addition, the only process in use in Germany since 1995 is the electric arc process, a process that releases only small amounts of process-related emissions, with such releases occurring in electrode consumption. Until 1995, the blast-furnace process, which produces relatively higher emissions, was used to some extent.

Method

Activity data

An activity rate figure of 54,500 t has been used for the year 2015 (adjusted value of 2014 statistical data), a recalculation will be made when updated statistical data are available.

Emission factors

The emission factor for TSP (0.1 kg/t for the current year and back to 1998) and the splitting factors for PM10 and PM2.5 are determined in a research project "Emissionen und Maßnahmenanalyse Feinstaub 2000-2020" by Jörß, Handke (UBA, 2007) [1]. There were higher but decreasing EF for the period 1990 -1997 due to the technology change.


Bibliography
1. UBA, 2007: Jörß, Wolfram; Handke, Volker; Lambrecht, Udo and Dünnebeil, Frank (2007): Emissionen und Maßnahmenanalyse Feinstaub 2000 – 2020. UBA-TEXTE Nr. 38/2007. Dessau-Roßlau: Umweltbundesamt. URL: http://www.umweltdaten.de/publikationen/fpdf-l/3309.pdf
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