FR2560796A1 - DEVICE FOR SEALING BETWEEN A CONTAINER CONTAINING A LIQUID METAL AND ITS ENHANCEMENT - Google Patents

Abstract

THE INVENTION RELATES TO THE MAKING OF A SEAL BETWEEN A CONTAINER CONTAINING A LIQUID METAL AND ITS EXTENSION. TO THIS END, ITS OBJECT A SEALING DEVICE BETWEEN A CONTAINER COATED INTERNALLY WITH REFRACTORIES AND CONTAINING A LIQUID METAL, AND A METAL EXTENSION ALSO COATED INTERNALLY WITH REFRACTORIES, THIS DEVICE CHARACTERIZED IN THAT THE EXTENSION IS MADE OF LOWER OF A SUSPENDED BELT, IN THE SHAPE OF A CORNER, WHOSE VERTICAL WING SURROUND THE BASE OF THE RISE AT A SUITABLE DISTANCE, AND WHOSE HORIZONTAL WING EXTENDS UNDER THE RISE, LEADING WITH THIS LAST A SPACE WHOSE VOLUME IS PREDETERMINED TO RECEIVE A DATA QUANTITY OF PLASTIC REFRACTORY PASTE, INTENDED TO BE CRUSHED BETWEEN THE RISE AND THE CONTAINER TO ENSURE THE WATERPROOFING. THE INVENTION APPLIES ESPECIALLY WELL TO OPEN POCKETS, CAST IRON OR STEEL, AS WELL AS TO STEEL LINGOTIERS FITTED WITH CERTAIN TYPES OF MASSELOTTES.

Description

Sealing device between a container containing a liquid metal and

  The invention relates to the production of a seal between

  a container containing a liquid metal, such as a cast iron ladle, a

  to steel, an ingot mold, etc ..., and raises it.

  Thus, in the particular case of pretreatment of cast iron in

  before its conversion into steel, the addition of certain reagents in the

  liquid iron in the bag and the brewing operation, for example due to a

  gas flow through permeable elements in the bottom of the pocket, provoking

  a bubbling liquid metal and an important foaming

  tier, which require an extra guard height above the ni-

calf bath.

  In cases, frequent in practice, where the capacity of the pockets

  can not be increased, it is possible to use a removable

  on the pocket. This raises the problem of the tightness between the pocket and the riser, the main drawbacks of a poor seal between the

  refractories of the pocket and the refractories of the enhancement being the following

  - Sparks and flames coming out of the joint, increasing the insecurity and deforming the armor of the pocket and that of the enhancement; - Deposits of metal and slag between the refractory lining of the pocket and that of the enhancement, making it much more difficult the separation of

  the bag and raises it after treatment, and damages the refractories.

at the joint.

  To seal the seal between the pocket and the riser, it is generally sufficient to have all the periphery of the upper rim

  a plastic refractory paste from the pocket, and then

  on the pocket, thus crushing the plastic paste, intended to form the

  seal. But in this way, the distribution of the plastic paste is often

  defective wind, either insufficient and thus not sealing,

  overabundant, overflowing in or out of the

  che, therefore with a possible incorporation into the slag, and a less control of the composition thereof, for the internal overflow, and a dirty pocket and enhancement for external overflow,

  not to mention the corresponding loss of refractory material.

  The object of the present invention is to provide a seal between the pocket and the riser, without the disadvantages mentioned above, that is to say, by controlling the amount of refractory paste well.

  plastic distributed all around the pocket.

  For this purpose, the subject of the present invention is a device for

  sealing between a container coated internally with refractories, and containing a liquid metal, such as a pocket or an ingot mold, for example,

  and a metal extension also coated internally with refractories

  res, this device being characterized in that the riser is provided at its lower part with a suspended belt having a shaped section

  angle, the vertical flange of which surrounds the base of the

  this suitable, and whose horizontal wing extends under the riser,

  with the latter a space whose volume is predetermined to re-

  cevoir a given amount of plastic refractory paste adapted to the volume of joint to achieve after crushing said paste by the riser when it comes to rest on the container, l'aile horizontal of the belt

  lying on the top edge of the container.

  According to a particular characteristic of the invention, the wing

  the horizontal angle of the belt angle has openings

  after crushing the dough a direct contact between the refractory paste

  re plastic and the top edge of the container.

  According to another particular characteristic of the invention, the riser comprises centering plates fixed on its periphery and guiding

  its positioning on the container, in order to achieve a good centering.

  As one understands, one of the main advantages of the application

  the device according to the invention is that the quantity of refractory paste

  re measured, once and for all, and that its distribution on the

Joint turn is regular.

  Another advantage is that the seal is excellent because it

  not only between the extension and the container, but also between

  be the raising and the vertical wing of the angle belt.

  Another advantage of the invention is that the belt can be

  in advance of the desired amount of plastic refractory paste, on a

  repair site, outside the yard, and that it is sufficient

  then, at the time of use, to suspend the belt so prepared to the riser, for example by means of chains, and then place on the

  container the raiser with its belt.

  In order to make the device according to the invention

  its operation, we will describe below, as a non-limitative example

  tif, an embodiment of a device placed on a steel pocket

equipped with a riser.

  Figure 1 is a vertical section of the lower part of the riser and the device according to the invention, after introduction of the dough

  refractory, so ready for use, and before crushing the dough.

  FIG. 2 is a vertical section of the lower part of the extension, the device according to the invention and the upper part of the

  steel pocket, after the raising of the riser and its device on the

  che, so after crushing the refractory paste.

  Figure 3 is a vertical section of a variant of the belt

of the device according to the invention.

  In Figure 1, showing the base of the riser and the arrangement

  sitif according to the invention before their introduction on the pocket, we distinguish the vertical part 1 and the horizontal part 2 of the metal armor

  of the riser, and its interior refractory lining 3.

  The device according to the invention comprises a wedding belt

  exactly the shape of the pocket and constituted by an angle, which presents

  a vertical wing 4 and a horizontal wing 5, the diameter of the ring

  forming the vertical wing 4 being slightly greater than the diameter of the

  vertical section 1 of the riser, and the horizontal wing 5 being located at a

  well calculated distance from part 2 of the riser.

  The belt is suspended from the riser by means of several chains such as 6, fixed at 8 to the wing 4 of the belt, and can

hang in and out in 7.

  When preparing the enhancement, as shown in the figure

  1, the belt, suspended in the low position, serves as a support for the plastic refractory paste joint 9, which may be a paste used in bulk, or a prefabricated roll, but which occupies a well-defined volume between the

  belt (4) (5) and the riser (2).

  Centering plates such as 10 are fixed regularly around the perimeter of the vertical portion 1 of the riser, either by welding or by any other means, and serve as a guide for positioning the riser.

  on the pocket, in order to achieve a good centering.

  FIG. 2 represents the second functional position,

  that the riser and the device are placed on the upper edge of the

poached.

  In this figure 2, we see the upper part of the pocket,

  wearing a cuirass 11 almost vertical, and a circular metal angle

  with an almost vertical wing 12 and a horizontal wing 13.

  The pocket is lined internally with a refractory lining 14.

  Following the installation of the extension and its device on the upper rim of the pocket, thanks to the guidance of dishes such as 10, the

  refractory plastic paste is crushed, elongated as well horizontally

  15 between the extension, the wing 5 of the device, and the upper edge of the pocket, that vertically in 16 between the vertical portion 1 of

  the breastplate of the riser and the vertical wing 4 of the belt of the

tif.

  The initial quantity of pulp 9, now 15 and 16 after crushing

  is adjusted precisely, so as to occupy, after crushing, the entire thickness of the refractory 3 and 14, by a suitable length in, and to open at 16 in the vertical interval between the riser 1 and

the belt 4.

  FIG. 3 represents a variant of the belt, in which

  the horizontal flange 5 is perforated by orifices such as 17, which allows

  puts the contact between the dough 15 and the upper rim 13 of the

  pocket, and therefore to further improve the seal. We can also use

  for the wing 5 of the belt, an expanded metal crown.

  It is understood that one can, without leaving the framework of the in-

  vention, imagine variations and refinements of detail, as well as

  consider the use of equivalent means.

  The invention applies especially well to cast iron bags, or

  with steel pockets, when they are open pockets (and not

  barrels) and it also applies to steel ingot mills equipped with

some types of weights.

Claims (3)

  1.- Sealing device between an inner coated container-   of refractories and containing a liquid metal, and a metal riser   it is also internally coated with refractories, this device being characterized in that the riser is provided at its lower part with a hanging belt, in the form of an angle, the vertical flange of which surrounds the   base of the extension at a suitable distance, and whose horizontal flange   stretches under the riser, sparing with the latter a space whose volume   is predetermined to receive a given amount of plastic refractory paste, to be crushed between the riser and said container to ensure tightness.   2. A sealing device according to claim 1, characterized in that the horizontal flange of the belt angle has openings ensuring, after crushing the refractory rod.   plastic, a direct contact between the plastic and the upper edge of the tainer.   3.- Sealing device according to any one of claims   1 and 2, characterized in that the extension comprises centering plates fixed on its periphery and guiding its positioning on the container, in order to achieve a good centering.