Calcium oxide based flux compositions

Details Calcium oxide based flux compositions Calcium oxide based flux compositions

C - Chemistry, Metallurgy

21

C

53/95

C21C 7/064 (2006.01) B22D 11/111 (2006.01) C21C 7/076 (2006.01)

Patent

CA 1214942

ABSTRACT CALCIUM OXIDE BASED FLUX COMPOSITIONS A particulate flux composition suitable for desulphurising and/or dephosphorising molten ferrous metals and for use as a mould flux comprises prefused particles comprising calcium oxide and at least one other component, such as alumina, iron oxide, calcium fluoride, magnesium fluoride, sodium fluoride, silica, sodium oxide, zirconium oxide, titanium oxide or sodium borate, and in which each particle has a substantially vitreous amorphous structure. The composition is highly resistant to hydration and does not introduce hydrogen into the molten metal.

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