Oxygen-Lance Process

Oxygen-Lance Process

 

in metallurgy, a method of converting molten pig iron into steel without the consumption of fuel by purging the pig iron in a rotating converter with technically pure oxygen. The process was developed in 1952 at a plant in Oberhausen, Federal Republic of Germany.

Figure 1. Diagram of a rotating converter: (1) oxygen feed, (2) opening through which molten pig iron and other materials are fed, (3) primary tuyere (oxygen for oxidizing metal impurities and mixing the bath), (4) secondary tuyere (oxygen for complete combustion of the CO formed), (5) control ring, (6) gear wheel for rotating the converter, (7) gas outlet, (8) outlet for the steel, (9) pouring ladle

The rotating converter (Figure 1) is a horizontal or slightly tilted cylinder that rotates about its long axis at a rate between 0.1 and 4 rpm. The total duration of smelting in a 60-ton converter from release to release is approximately 2 hours. The process is mainly designed for the conversion of phosphoric pig irons. Because of high construction and operating costs, the oxygen-lance process has not become common.

REFERENCE

Perlov, N. I., and M. P. K vitko. Progress v kislorodno-konvertornom proizvodstve. Moscow, 1963.
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