Calcium Oxide Is Added to Molten Iron in the Production

question 12

Multiple Choice

Calcium oxide is added to molten iron in the production of carbon steel in order to

• A)convert silicon and phosphorus oxides to slag which can be decanted from the molten steel.
• B)serve as a scrubber to remove sulfur dioxide from the gases leaving the furnace.
• C)remove any traces of acid which could weaken the steel.
• D)add a small amount of oxygen to the steel to prevent corrosion and increase its strength.
• E)create gangue.

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Definitions:

Tempered Aluminum

Aluminum that has been heat-treated to increase its strength and durability without losing its lightweight characteristic.

Mild Steel

A low carbon steel containing a small percentage of carbon, widely used in construction due to its malleability and relatively low cost.

C-Channel Frame Rail

A structural component in vehicles or machinery, shaped like the letter 'C', providing support and rigidity.

Flange

A flat rim, collar, or rib, typically projecting for strength or attachment to another object, as at the end of a pipe, steam cylinder, etc.