basic-oxygen process

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A high-speed method of making high-grade steel. It originated in the Linz-Donawitz (L-D) process. Molten pig iron and scrap are charged into a tilting furnace, similar to the Bessemer furnace except that it has no tuyeres. The charge is converted to steel by blowing high-pressure oxygen onto the surface of the metal through a water-cooled lance. The excess heat produced enables up to 30% of scrap to be incorporated into the charge. The process has largely replaced the Bessemer and open-hearth processes.

Subjects: Chemistry — Physics.

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