Explain the role of a basic oxidising slag in steelmaking.
(04)
1b)
Carry-over of the basic oxidising slag from the converter is undesirable to the transfer ladle. Why? How is it possible to minimise the carry-over of slag?
(08)
1c)
Explain the influence of lance height and the number of nozzles in the lance on the decarburization and dephosphorization reactions in the LD Converter.
(08)
2a)
Explain the procedure for charging sponge iron in an electric arc furnace. Discuss the advantages and limitations of using sponge iron as a charge material.
(06)
2b)
Discuss the basis of technological development in the electric arc steelmaking? Explain in detail the contribution of chemical energy in electric steelmaking in reduction of electric consumption.
(08)
2c)
What are the advantages of external desiliconization of hot metal prior to steelmaking
