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. 2005 Jul 29;6(8):708–718. doi: 10.1631/jzus.2005.B0708

Table 3.

Concentration of silica fume components (major, minor and trace elements) in the ferrosilicon factory in Edfu, Aswan, Egypt

Item Concentration
SiO2 (%) Fe2O3 (%) Al2O3 (%) CaO (%) MgO (%) K2O (%) Na2O (%) Mn (×10−6) Co (×10−6) Ni (×10−6) Pb (×10−6)
Silica fume 95.1 0.63 0.39 0.19 0.53 0.90 0.50 315.4 77.9 4.5 BD

BD: Below detection limit