WERKWIJZE VOOR HET TOEVOEREN VAN FRISGAS IN EEN SMELT- -OF FRISVAT VOOR METALEN, ALSMEDE MONDSTUK VOOR HET UIT- VOEREN VAN DEZE WERKWIJZE.

摘要

A tuyere for the injection of both a refining gas such as oxygen into a melting or refining vessel, and a fluid protective medium such as a hydrocarbon gas or a liquid surrounding the injected refining gas, in which there is a solid center in the pipe through which the refining gas is suplied so that the refining gas enters the refining vessel as an annulus around which the protective fluid is disposed. The tuyere is installd in the refractory lining of the refining vessel and the fluids passing into the vessel through the tuyere are proportioned so that burning back of the tuyere and erosion or wear of the lining take place at the same rate. The protective medium cools the tuyere and avoids reactions between the refining gas and the tuyere material.