Lance/burner for molten metal furnance

Details Lance/burner for molten metal furnance Lance/burner for molten metal furnance

1997-03-18

1999-03-16

Hoang, Tu Ba

Industrial electric heating furnaces

Environmental control

373 24, 373 25, H05B 700

Patent

active

058839178

ABSTRACT:
A method for providing main gas into a pool of molten metal, which is particularly useful for use in an electric arc furnace. The method employs combustion of secondary oxygen with fuel to form a flame envelope around a main gas stream which protects the main gas from entrainment of ambient gases as it passes through the headspace of the furnace. This enables the gas to retain to a substantial degree its original force upon injection into the headspace and thus may be injected into the furnace at a safe distance from the molten metal surface while still achieving substantially complete penetration into the molten metal.

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Stoecker et al., "Fundamental Concepts of Oxygen Cutting", Welding Journal pp. 151-s-156-s (1957).

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