In the reaction of the metal deoxidizing by carbon (in contrast to all other deoxidizers-elements) form gaseous deoxidizing products, that's why reduction of the pressure increases deoxidizing capacity of carb on, whereby significant influence exerts temperature.
To prevent poppling in the ladle during tapping because of high level of the metal oxidation, preliminary deoxidizing of the latter by aluminium was performed.
01 %) both in degassing of the metal with preliminary deoxidizing by aluminium and without introduction of the latter.
When silicocalcium is used for modification of steel, silicon, which enters into composition of the said silicocalcium, may exert deoxidizing influence, provided oxide phase (of calcium silicates) is formed, in which activity of [SiO.
Constant of ferronickel deoxidizing by silicon has the following form:
For the case of iron deoxidizing by silicon dependence of lg [K'.
Equilibrium content of oxygen in iron (approximately the same is in ferronickel) depends upon weight share of silicon and temperature; the lower is temperature the higher is deoxidizing capacity of silicon because of exothermic nature of reactions of interaction of silicon with oxygen.
Deoxidizing of ferronickel by aluminum may be presented by the reaction: