DE2331783C3 - Immersion vessel with walls made of refractory material for introducing pure magnesium into a cast iron melt - Google Patents

Description

filling pipe 5 is inserted. The reaction chamber 6 has compared to the antechamber 7 a much greater height, so that the filling opening 8 from the roof 11 of the Container 4 has a distance It can be seen that the antechamber through steadily widening transitions merges into the reaction chamber 6, which is arranged offset from the filler pipe 5, seen in cross section take the reaction chamber 6 and the antechamber 7 a push-like shape or shape.

The walls 12, 13 of the container 4 consist of refractory material. There are several in the wall 12 nozzle-like contact openings 14 for the inflow and outflow of the melt into and out of the reaction chamber as well as for the exit of reaction products, e.g. B. the vaporized magnesium provided. the The number and size as well as the arrangement of the contact openings 14 in the walls 12 is dimensioned in such a way that that only a reaction of the melt with the pure magnesium can take place when the container 4 of the Immersion bulb 3 is completely submerged below the surface of the melt 2.

The filler pipe 5 is on together with the container 4 attached to a protective cover 15 which, when the immersion bulb 3 is submerged, opens the treatment vessel 1 The rod 10 is fastened to the cover 15 by means of a wedge lock 16. The wedge lock 16 is designed so that at the same time when attaching the rod 10 to the filler pipe 5 of the plug 9 the filling opening 8 seals off tightly.

The further configuration of the immersion pear 3 corresponds essentially to the immersion pear according to the main application.

1 sheet of drawings

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Claims (5)

Patent claims: 1. Immersion vessel with walls made of a refractory. Material in which a metal reinforcement is used is embedded for introducing pure magnesium into a cast iron melt (2) for production of spheroidal graphite cast iron in which the immersion vessel is designed as a dipping pear (3) and in a closure cover (15) of a treatment vessel (1) is held by means of a filler pipe (5) and in which the reaction chamber (6) of the immersion bulb is provided with contact openings (14) and for Filler pipe (5) towards a filler opening (8) through a plug (9) which is connected to a Metal tube retractable rod (10) is connected, pressure-tight is lockable according to the patent 22 08 960, characterized in that that the reaction chamber (6) of the immersion bulb (3) is arranged offset towards the insertion tube (5) 2. TauchgcfäS according to claim i, characterized that the reaction chamber (6) is followed by an antechamber (7) in which the filling opening (8) is provided. 3. Dip vessel according to claim 1 or 2, characterized in that the reaction chamber (6) has a has a much greater height than the antechamber (7) 4. immersion vessel according to one of claims 1 to 3, characterized in that the antechamber (7) through continuously widening transitions into the reaction chamber arranged to the filling pipe (5) (6) passes. 5. immersion vessel according to one of claims 1 to 4, characterized in that ore with the stopper (9) connected rod at the top of the filling tube (5) is attached to the closure cover (15) by means of a wedge lock (16). exposed during the reaction so that in this immersion vessel the metal tube is conical towards the container is widened and connected to the basket-like metal reinforcement of the immersion bulb provided here The object of the present invention is to design the reaction chamber of the immersion bulb so that the The filling opening remains largely free of solidified cast iron According to the invention, this object is achieved by dadurdi ίο that the reaction chamber of the immersion bulb to the filler tube is offset This inventive design of the reaction chamber has the advantage that the extremely violent reaction of the pure magnesium takes place in areas of the reaction chamber that is remote from the filling opening one end of the metal tube protruding beyond the closure cover as in Ac- Tn .. "!, A ~ w ~ Dn »*» n »oo no o & n The invention relates to an immersion vessel with walls made of refractory material for introducing pure magnesium in a cast iron melt for the production of cast iron with spheroidal graphite according to patent 22 08 960. The immersion bulb according to the patent 22 08 960 has a container that with respect to the longitudinal central axis perfectly is designed symmetrically. The reaction chamber provided in the container has a filling opening for filling the additives into the reaction chamber, which is in the longitudinal center axis at the highest point of the reaction chamber is arranged. In operation, however, the immersion bulb takes place after the pure magnesium has been introduced in the cast iron melt the reaction is so violent that parts of the melt against the wall of the Reaction chamber are thrown, solidify there and thereby a more or less thick cast iron coating form. This coating is particularly special in the upper part of the reaction chamber, in particular the filling opening strong. This is why it is also provided in this immersion vessel that the one protruding beyond the closure cover The end of the metal tube forms a funnel-shaped filler neck which can be closed in a pressure-tight manner After the molten metal has been treated, it is very difficult to get the stopper out of the filler opening pull out. Due to the location of the metal pipe, this itself is also subject to considerable loads superfluous like a possible connection of the metal tube with the metal reinforcement of the immersion bulb. It is true that DE-OS 22 19 740, DE-OS 18 15 214 and US-PS 36 66 449 each contain treatment vessels for the production of cast iron with spheroidal graphite by means of Reir./nagnesium known, in which the Reaction chambers are arranged offset towards a filling opening. However, this is from of their type, tilting converters that are not comparable to dipping pears of the present type. In addition, the Reaction chamber arranged here offset towards the filling opening, through which the cast iron melt into the Tilt converter is filled or removed from the converter after the tilting process. In a further embodiment of the invention it follows an antechamber, in which the filling opening is provided, is attached to the laterally offset reaction chamber. It has proven to be expedient. that the reaction chamber has a much greater height than the antechamber. It is also advantageous if the antechamber through steadily widening transitions into the Filling tube offset reaction chamber passes over. A simple attachment of the plug to the device is characterized in that the plug on the upper end of a filler pipe is attached to the closure cover by means of a wedge lock. In the drawing, as an embodiment of the invention in a vertical cross section is a in a E treatment vessel with cast iron meltc attached Diving bulb shown. A treatment vessel 1 made of refractory material is partially with melt, in particular Cast iron melt 2, filled. A dipping pear 3 is introduced into the cast iron melt and is drawn from a container 4 and a filler pipe 5 attached to the upper end of the container. The container 4 has a Reaction chamber 6 for receiving pure magnesium or other highly reactive additives. the The reaction chamber 6 is arranged laterally offset towards the filling pipe 5. To the reaction chamber 6 an antechamber 7 adjoins the filler pipe 5. The filling tube 5 opens into the antechamber 7 and forms there a filling opening 8. The filling opening 8 is closed by means of a stopper 9. The plug 9 is on a rod 10 attached, which is attached from the outside through the