ELDFAST STEN MED EN GENOMGANGSOPPNING FOR FLYTANDE METALL SAMT FORFARANDE FOR DESS TILLVERKNING

摘要

A shaped refractory body having an elongated passage for the feeding of molten metal. At least one conduit is provided extending from the exterior of said body into communication with the passage for the introduction of a gas thereto. The conduit is reduced in diameter at least at its inner end adjacent the passage to the size of a capillary.