Typical furnace properties and emission data for aluminium melting

Emission factors have been provided for emissions per tonne of good casting, based on the following assumptions  

Consumption and emission data per tonne of good casting for a 3 t/h shaft furnace, melting aluminium are given in Table 3.22. This also gives the flue-gas emission levels of the raw offgas without cleaning. 

Data are calculated values per tonne of good casting  

Aluminium induction furnaces usually range from 500 kg to 2 tonnes capacity and operate at frequencies of 250 - 1000 Hz. 

For example, in one installation, two 1.5 tonne aluminium capacity steel shell tilters are powered by a 1250 kW, 250 Hz power supply with a change-over switch which allows alternate furnaces to be melted. With this system 1.5 tonnes can be melted in 40 minutes. 

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Table 3.21 Typical furnace properties and emission data for aluminium melting [148, Eurofine, 2002] and comments from CTIF and VDG...

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