4.4.3.2.2 Sulfides and intermetalic compounds
Bornite (Cu
5
FeS
4
). One of the most commonly identified sulfides in the studied slags (HS,
SFS, LS) is the phase with a stoichiometric composition close to bornite (Table 4.5). It has
been detected in HS as well as in two types of modern slags: SFS and LS. Chemical
composition of bornite identified in the slags is variable but it always places within the
stability field of bornite on the ternary diagram presenting atomic proportions of Cu, Fe and S
(Figure 4.4). This variability can be explained by some important impurities of other metallic
compounds within bornite (Table 4.5).
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