Spout with throat of the bottom of the vacuum chamber RH device for a a vacuum degassing steel by circulating having their enhanced stability

摘要

Short with the throat end of the vacuum chamber of the circulating steel vacuum gas dispenser RH,with an increased durability, of which one is a short-suction unit, equipped with a steel armour with a system of steel pipes on its internal surface, constituting a cooling installation,leading the inert gas to the steel casing of that appliance and the second exit short, returning the degassed liquid steel from the vacuum chamber of that appliance to that vat, both of which are equipped with steel armour, made as monolithic assemblies, that the short suction (3) below the inner surface of the steel shell (7),it has steel tubes (11) mounted on its periphery substantially higher than its steel armour (11) so that its upper ends reach the throat area (15) of this short, while the upper ends of the suction short (3) and the exhaust short (4) are connected to a bookmark with their separate flat throats (15) so that they constitute, together with those short monolithic structures.