Oxides, wt% | 1 (13) | 2 (3) | 3 (15) |
Al2O3 | 9.36 | 8.82 | 0.39 |
Cr2O3 | 61.73 | 57.50 | 59.14 |
FeO | 17.82 | 25.64 | 35.76 |
MnO | 0.15 | 1.57 | 2.10 |
MgO | 9.81 | 3.08 | 0.69 |
ZnO | н.о | 2.76 | 1.76 |
Total | 98.87 | 99.37 | 99.84 |
Cr/(Cr + Al) | 0.90 | 0.89 | 0.99 |
Fe/(Fe + Mg) | 0.70 | 0.91 | 0.99 |
Components (%): |
|
|
|
MgAl2O4 | 13 | 11 | 0.5 |
FeAl2O4 | – | 1 | – |
(Fe, Mg)Cr2O4 | 64 | – | 5 |
FeCr2O4 | 21 | 78 | 81 |
MnCr2O4 | 0.5 | – | – |
(Zn, Mn)Cr2O4 | – | 7 | – |
ZnCr2O4 | – | 2 | – |
MnFe2O4 | – | – | 2 |
(Zn, Mn)Fe2O4 | – | – | 10 |
FeFe2O4 | – | – | 1 |