Question

Ladle metallurgy does not include the following operation:

• A. Deoxidation
• B. Decarburisation
• C. Desulphurisation
• D. Sulphide shape control

Hint:

\textbf{Decarburisation} is done in the main furnace (BOF/EAF), not in ladle metallurgy, which focuses on deoxidation, desulphurisation, and inclusion control.

Answer 1

The Correct Option is B

Step 1: What is Ladle Metallurgy?
Ladle metallurgy is a set of refining operations carried out in the ladle after the steel is tapped from the primary furnace (like BOF or EAF). It enhances steel quality before casting. Step 2: Operations Included in Ladle Metallurgy Common ladle metallurgy operations include: - Deoxidation: Addition of elements like Si, Al to remove dissolved oxygen. - Desulphurisation: Removal of sulfur by adding calcium or fluxes. - Sulphide shape control: Use of argon or rare earths to modify MnS inclusion shape. Step 3: Decarburisation is Excluded
Decarburisation (removal of carbon) is a primary furnace operation, carried out in: - BOF (Basic Oxygen Furnace) by oxygen blowing, or - EAF (Electric Arc Furnace) during oxidation. Ladle metallurgy does not focus on significant carbon removal. Conclusion: The operation not included in ladle metallurgy is decarburisation.