DE1961136U - CRUCIBLE OR CONVERTER. - Google Patents

Description

lie! or converter

The "inflation" concerns a seal or converter for Implementation of inflation processes · Known crucibles "exist from a cylindrical or pear-shaped vessel provided with a refractory lining; the tiltable Storage of such crucibles is usually done by means of support rings to which pegs are attached, or - in the so-called support ring-less crucibles - are the support and Pivot attached to the crucible wall itself «Since the The crucible wall is exposed to strong thermal loads, it is necessary to cool the support and pivot pins as well as the support ring. · ·

In the course of the development of the inflation method prevails the tendency to go over to larger and larger crucible units. The problem arises that the crucible mouth is exposed to excessive stress and its durability is no longer sufficient. Thermal stresses caused by heating from the inside of the crucible, by reflection from the chimney, by the slag ejection,

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due to radiation from the lambs striking out of the crucible mouth "and mechanical stresses," caused by Formation of bears, the removal of which is mechanical (blow and shock) must take place, can in large crucible units Reach an extent that with otherwise good shelf life of the crucible jacket and the brickwork, the upper parts of the crucible are subject to severe deformation and destruction. It has been proposed to make the tops of crucibles replaceable and to replace the tops earlier than the rest of the brickwork, but it goes without saying that the interruption of a converter trip for this purpose is a significant loss and entails additional costs

. The purpose of the hiring is to avoid the above Disadvantages and difficulties and consists in the fact that around the mouth of the crucible or around part of the Mouth of the crucible in-flowed by a coolant Protective ring is placed and so-attached that a Air gap between the crucible wall in the mouth part of the crucible and the cooled wall surface of the protective ring free remain. ; '.; .. "-.

The double-walled protective ring advantageously has a hook-shaped profile, with one radially inwardly directed surface forming part of the end face of the crucible mouth by being aligned with the end face of the muzzle stones, and the other surface being adapted to the inclination of the crucible wall in the upper part of the crucible . ..- '■.;■; - = ..'. "";:, ■■■■■■■. "- ', ·".

The part of the protective ring directed radially inwards can be used at certain points, e.g. the slag pouring parts, Made of wear-resistant / material, preferably a nodular cast iron plate.

To avoid thermal deformation between the heated and cooled parts will be according to the hiring also proposed that the part of the protective ring surrounding the crucible wall at a distance on to the crucible wall attached supporting members, e.g. small Eonsoles welded to the crucible wall, preferably by means of screws and elongated holes, which enable a perfect fit, but avoid jamming «

The protective ring can be made in one or more parts and is easily exchangeable «

The arrangement according to the hiring ensures an excellent durability of the upper part of an inflation crucible 5 it vri.rd a reliable protection against thermal influences from above and from outside created; The air circulation along the walls of the crucible is not hindered and it is produced so that differences in thermal expansion cannot lead to damage anywhere .

In the drawing, an embodiment of the innovation is explained in more detail »

E ¹ Ig. 1 shows a side view of the crucible 5

Fig. 2 is a vertical section perpendicular to Drawing plane and

3 shows a vertical section in FIG. - the drawing plane of FIG. 1.

The crucible is composed of the crucible shell 1 and the refractory lining 2. The top K _a n-th of the crucible shell 1 carries a narrow, radially inward addressed

te th edge 3- At points distributed around the circumference of the crucible Consoles-4 are welded on, which serve as supporting organs for serve the protective ring 5 · The protective ring itself has a hook-shaped Profile, wherein, the one flange 6 radially inward is directed and forms part of the end face of the crucible mouth by being with the end face 8 of the Bricks of the estuary is in alignment during the other plan 7 of the inclination of the crucible wall 1 in the upper part of the crucible is adapted. The two parts of the Guard rings 6 and 7 are forming spaces 9 and. 1o formed with a double jacket, which together communicate and by a coolant such as water flowed through; at 11 a partition is designated.

There is an air gap between the cooled walls of the ring and the outer wall of the crucible jacket 1 or 3 12 released by moving parts 6 and 7 of the ring support the crucible shell 1 or the part 3 by means of support bolts 13 as spacers · The fastening of the Rings on the Eonsolen 4 are advantageously carried out by means of Screw and elongated holes so that the fastening make slight movements possible.

As can be seen from 3? Ig * 3, the can radially according to inward part 6 of the protective ring on certain. Place the scope, which is exposed to particularly high stresses are, for example at the pouring point for slag or steel, made of solid material 14; so this king part is not double-jacketed but rather A wear plate is welded in, which has the same thickness as the rest of the double-walled part 6 (including the otherwise existing gap 1.2) and advantageously from - spheroidal graphite iron. Appropriate are sd. ** before wear plates 14 at two opposite points

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leu des kings provided as from 3? ig. 1 can be seen.

Bex · Protective ring according to the hiring can consist of one or several parts, depending on the size of the crucible. Two-part hinge have proven particularly useful

The coolant can be supplied and removed in the manner known for cooling the support pins or the support ring, and the lines can be connected to the cooling system of the parts mentioned. In Pig · Λ with -15 -the supply lines and with 16 the drainage lines are designated, which are attached to the 'outer wall of the crucible jacket 1. Alternatively, they could be laid in the permanent lining of the crucible «V - - -

Claims (6)

-A.189 3β "2 * -6.4.67 Patent attorneys Dipl. Ing. Walter Meissner Dipl. Ing. Herbert Tischer Munich, April 3, 1967 Office Munich * Munich 2, Valley 71. Protection claims 1. Crucible or converter for carrying out inflation processes, marked by the fact that around the mouth of the crucible or around part of the mouth of the crucible, a protective ring flowed through by a coolant is placed and fastened in such a way that an air gap remains free between the crucible wall in the mouth part of the crucible and the cooled wall surface of the protective ring. 2. Crucible according to claim 1, characterized ge ζ e i c h η et that the protective ring is double-walled and has a hook-shaped profile, the one radially inwardly directed flange being part of the end face of the crucible mouth by being flush with the face of the mint stones, and the other flange of the Inclination of the crucible wall is adapted in the upper part of the crucible. 3. Crucible according to .Anspruch 1 or 2, characterized in that that the radially inwardly directed part of the guard ring at certain points, e.g. the Sehlaekenausgußstelle, made of wear-resistant material, preferably a nodular cast iron plate. 4. crucible according to claim 1 or 2, characterized j that the crucible wall with The surrounding part of the protective ring stood on the wall of the crucible attached supporting organs, e.g. on. the "brick wall welded on small consoles, is attached, preferably by means of screws and Langiochern, which a flawless Allow seating, but avoid jamming. 5 · Seal according to claims 1 to 4, thereby g e k e η η ζ e i c h-n et that the protective ring consists of several parts is trained" - . . '" 6. Crucible after the Äisprüehen Λ to 5 »thereby geke η η ζ calibrated net that the Eühlmittelelleitungen for the protective ring are connected to the Eühlsystem of the support ring or the support pin.