21. Acidic iron is also known as
22. What are the applications of 321 Austenitic stainless steel?
23. Slag basicity of LD slag is-
24. The nozzle used in the lance of LD steel making process is
25. Modern electric arc furnace uses
26. Which one of the following factors is not desirable for effective phosphorus removal in BOF steel making process?
27. Which one of the following processes is performed for inclusion modification in ladle metallurgy of steel making?
28. In maraging steels, carbon is present as an impurity and is generally kept below . . . . . . . . percent.
29. Which of the following elements is used as austenite stabilizer in 18 - 8 stainless stee
30. Liquid steel (300 metric tons) initially containing 0.03 mass% sulfur, is desulphurised with calcium (1000kg) according to the reaction, Ca + [S] = Ca S. The slag (1 metric ton) lying on top of metal contains (in mass%) 50% CaO, 25% SiO2 and the rest is Al2O3. Only 10 mass% of the CaO injected reacts with the sulfur and the rest escapes as gas into the atmosphere.
What will be the final sulfur content, in mass% in liquid steel?
What will be the final sulfur content, in mass% in liquid steel?