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sector:ippu:metal_production:ferroalloys_production:start [2021/04/12 14:13] – [Short description] reichel | sector:ippu:metal_production:ferroalloys_production:start [2021/06/01 18:41] – section short description deletion of text and section activity data data sources before 1994 integrated reichel | ||
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Source category // | Source category // | ||
- | Ferroalloys are nonferrous metal aggregates that are alloying agents for the steel production. Germany has five producers of ferrochrome, | + | Ferroalloys are nonferrous metal aggregates that are alloying agents for the steel production. Germany has five producers of ferrochrome, |
===== Method ===== | ===== Method ===== | ||
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=== Activity data === | === Activity data === | ||
- | An activity rate figure of 53,258 t has been used for the year 2019 (adjusted value of 2018 statistical data), a recalculation will be made when updated statistical data are available in General every two years. | + | The activity data for the years 1990 through 1994 have been taken from official production statistics of the Federal Statistical Öffice. Since 1995, data of the British Geological Survey (Brown et al., 2019) have been used instead, because the official production statistics no longer contain usable data for this context. |
+ | The currently available activity data are from 2018, and they have been carried forward into 2019.An activity rate figure of 53,258 t has been used for the year 2019 (adjusted value of 2018 statistical data), a recalculation will be made when updated statistical data are available in General every two years. | ||
=== Emission factors === | === Emission factors === | ||
The emission factor for TSP (0.1 kg/t for the current year and back to 1998) and the splitting factors for PM< | The emission factor for TSP (0.1 kg/t for the current year and back to 1998) and the splitting factors for PM< | ||
- | |||
There were higher but decreasing EF for the period 1990 -1997 due to the technology change. | There were higher but decreasing EF for the period 1990 -1997 due to the technology change. | ||
- | === Uncertainties === | ||
===== Recalculations ===== | ===== Recalculations ===== | ||
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**Lit. | **Lit. | ||
- | **Lit. | + | **Lit. |