PERFECCIONAMIENTOS EN LOS APARATOS EMPLEADOS EN LA ELABORA-CION DE MATERIALES FUNDIDOS A TEMPERATURAS ELEVADAS.

摘要

1372418 Refractories WESTERN ELECTRIC CO Inc 6 Oct 1971 [7 Oct 1970 3 June 1971] 46445/71 Heading C1J [Also in Division F4] Molten metals are processed in apparatus comprising a nozzle, wherein the part of the nozzle contacting the melt at 700-1300‹ C. comprises ZrO2 containing 2À8-3À15% MgO and contains means for heating the nozzle before contact with the melt.