Linz-Donawitz process

Linz-Donawitz process See basic-oxygen PROCESS. 

SM Siemens-Martin process, LD Linz-Donawitz process... 

Example linz-Donawitz-Process for steelmaking Here oxygen at about 15 bar is blown through a lance into the pig iron melt. 

L-D Process. A process for the production of steel by the oxygenblowing of molten iron held in a static vertical vessel. The latter is lined with tarred or fired dolomite refractories dead-burned magnesite is also sometimes added to the batch. The process was first used in 1952, at Linz, Austria, and L-D stands for Linzer Diisenverfahren, i.e. Linz Nozzle Process (not Linz-Donawitz, as is commonly believed). 

L-D [Linz, Austria and either Dusenverfahren (nozzle process), or Donawitz, the other Austrian town where it was developed] A basic steelmaking process in which oxygen is used instead of air to remove most of the carbon from the molten pig iron. Developed in Austria by the Vereinigte Osterreichisch Eisen und Stahlwerke of Linz, and Osterreichisch Alpine of Donawitz, in the 1930s and 40s commercialized in 1952, and now widely adopted. The furnace is essentially a Bessemer converter, modified with a water-cooled oxygen injector. See also Bessemer. 

Oxygen-Furnace Process Method of steelmaking in which an oxygen stream is directed downward onto a melted mass of pig iron and scrap, thereby producing high-quality carbon steels also known as LD process, after the Austrian towns of Linz and Donawitz, where it was developed. 

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