GATE Mineral Processing and Extractive Metallurgy: Primary and secondary steelmaking – Previous Year Questions

6 GATE previous year questions on Primary and secondary steelmaking (Mineral Processing and Extractive Metallurgy, Metallurgical Engineering) with answers and explanations, from every paper.

1. GATE 2021 MT Q22 (1 mark, Multiple choice) – Which element oxidizes first in basic oxygen steelmaking?
2. GATE 2022 MT Q19 (1 mark, Multiple choice) – Which one of the following elements has the slowest removal rate from hot metal in basic oxygen furnace (BOF) steelmaking?
3. GATE 2022 MT Q51 (2 marks, Numerical answer) – Molten steel at 1873 K weighing 100 metric tons is desulfurized using 1250 kg of synthetic slag by equilibration. If the sulfur content in the steel…
4. GATE 2023 MT Q38 (2 marks, Multiple choice) – For a supersonic oxygen jet in basic oxygen furnace steelmaking, choose the correct combination. 1. Converging–diverging nozzle 2.…
5. GATE 2025 MT Q20 (1 mark, Multiple choice) – Which one of the following slag components is responsible for the oxidizing power of steelmaking slags?
6. GATE 2025 MT Q38 (2 marks, Multiple choice) – Match the steel-plant processes in Column I with the associated information in Column II. Column I: P. Corex Q. Electric Arc Furnace R. Midrex S.…