Process for the production of steel with increased ductility

Details Process for the production of steel with increased ductility Process for the production of steel with increased ductility

C - Chemistry, Metallurgy

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C

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C22C 38/00 (2006.01) C21C 7/00 (2006.01) C21C 7/064 (2006.01)

Patent

CA 1045824

ABSTRACT OF THE DISCLOSURE A process for the production of steel with increased ductility in which a sulfur-containing steel melt is deoxidized and, if desired, is supplied with alloying elements, the deoxidized melt is treated with calcium as part of a purification action simultaneously reducing the sulfur content and the reaction is carried out in a casting ladle having a lining free from siliceous oxides. The melt is covered with a synthetic slag free from siliceous oxides and the calcium-containing substance is introduced in fine-grain particulate form into the melt in a carrier gas at a level at least 2000 mm below the melt surface and at a rate which is less than the maximum rate at which the calcium-containing substance is capable of reacting with the melt.

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