Peter Hutchison wrote:
>
> I think that the analysis you have given us for the lowest slag melting
> temperature shows why bloomeries can easily deal with titaniferous ore
> while charcoal blast furnaces might struggle to make iron. Your lowest
> melting point slag has 15% FeO. This is around ten times the usual level
> found in blast furnace slag.
What I understand by bloomery slags are fayalitic slags. In this case
the Fe-content of the eutectic compositions would correspond
approximatively to somewhat below the eutectics in the systems
FeO-Al2O3-SiO2 and CaO-FeO-SiO2, both around 1050 deg.C, further lowered
by additional alkalies and other oxides (like TiO2) in the melt.
Ingo Keesmann
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