JPH07150213A - Metal container - Google Patents

Abstract

PURPOSE: To prevent the closure of an operation for insertion of a metallic lance-like device consisting of heat resistant lining and specifically constituted tapered and expanded portions, to avert the disturbance of device insertion by deposits and to easily remove the deposits by providing the metallic vessel with the aperture described above.

CONSTITUTION: This metallic vessel has a metallic external casing 7, the heat resistant back linings 8 and 9 disposed on the inner side thereof and the aperture 1 passing the wall of the vessel 4 for the purpose of the insertion of the metallic lance-like device (preferably a measuring and sampling probe 2). The aperture 1, when viewed from outside, is formed of the portion 12 which is tapered toward the narrow area 11 and the portion 13 enlarged from the narrow area 11. The portion 12 is lined by a metallic sheet 14 and the portion 13 is formed of a heat resistant blank 18 having the heat resistance higher than the heat resistance of the heat resistant back linings 8, 9.

COPYRIGHT: (C)1995,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal container, and more particularly, to a steel mill converter, in which a metal outer casing and a heat-resistant backing and a post-stage combustion lance provided inside the metal outer casing, a dust feed lance, etc. The present invention relates to a steel mill converter with an opening through the wall of the vessel for the insertion of a lance-shaped metal device, which is preferably the measuring and / or sampling probe or other device required for the operation of.

[0002]

2. Description of the Related Art A probe opening in the form of a cylindrical opening passing through the conical upper part of a converter is known from DE-C-39 34340. To avoid closing the probe opening,
It is known from this document to provide a backing of graphite or a mixture of graphite and alumina in the probe opening in order to facilitate the removal of precipitates such as and / or slag.

[0003]

The disadvantage in this case is that the length of the probe opening is increased, which is
This is because the heat resistant backing has a specific minimum thickness and the probe opening passes through it at a constant angle. Due to the long length, measuring and / or insertion of the sampling probe may also be hindered by relatively small deposits.

It is an object of the present invention to provide a metal container having an opening of the kind mentioned above, which reliably prevents closure and which deposits which can be formed are measured and / or sampling tips and other lance-like devices. It is to create something that does not interfere with insertion and can be easily removed.

[0005]

This object is achieved according to the invention by combining the following features. 1. When viewed from the outside from the inside, the opening is formed by a portion that is tapered toward a narrow area and a portion that expands from this narrow area. 2. The tapered portion is lined with a metal sheath. 3. The enlarged portion is made of a heat-resistant material, and its heat resistance is higher than that of the remaining heat-resistant backing of the metal container.

In order to ensure that the probe opening is sufficiently cooled, the metal sheath in the tapered portion of the opening is suitably double-jacketed and oriented towards the annular hollow chamber, the hollow chamber. And a hollow chamber that opens with an annular gap in the inner direction of the container and is sealed in the outer direction of the container.

In order to cool the refractory material in the enlarged part of the opening, a hollow chamber through which the gas supply device opens is advantageously provided through the refractory material. , Open appropriately to a common gas supply hood that is connected to the gas supply.

In a preferred embodiment, metal pipes are inserted into the hollow chamber with a gap, the metal pipes pass through the gas supply hood without gaps and each is connected to a separate gas supply device. The chamber surrounded by the gas supply hood is connected to an annular gap formed between the metal pipe and the hollow chamber of heat-resistant material.

If the tapered metal backing is designed as a truncated pyramid, simple manufacture is guaranteed.

Preferably, the lower surface of the tapered portion of the opening is perpendicular to the longitudinal axis of the metal container, and the side surface of the tapered portion of the opening opposite the lower surface is of the enlarged portion of the opening. It is arranged so that it is almost parallel to the bus line at the bottom.

It is particularly advantageous when the axis of the measuring and / or sampling probe is at an angle of 19 to 22 degrees with respect to the longitudinal axis of the cylindrical inner surface of the lining of the metal container. If an angle of less than 19 degrees is chosen, this leads to a large increase in the size of the enlarged part of the opening, thus making it more likely that the metal container backing is in the shape of a converter. It will be difficult.
At angles exceeding 22 degrees, the technical equipment introduced through the opening of the measuring lance is
It may be more difficult to find the way to the area of e).

The thin portion of the probe opening is the longitudinal axis of the measuring and / or sampling probe, the cylindrical inner surface of the lining of the tubular portion of the converter and the upper part of the conical cone shape of the converter. Are advantageously arranged to cross a line of intersection with the inner surface of the backing.

In order to increase the stability of the opening and at the same time prevent deformation and damage of the lining in this area, the outer end of the metal sheath in the tapered portion of the opening is passed through the rigid frame to the metal of the metal container. Advantageously connected to the outer casing.

According to a preferred embodiment, the enlarged part of the opening is preferably designed in the shape of a truncated cone.

In the process of action of the metal container in the shape of the converter accompanied by cooling of the probe opening, cooling of the enlarged portion of the opening and cooling of the metal sheath of the tapered portion of the opening are performed by the converter. In the course of the cycle, it is preferably nitrogen (nitrogen), characterized in that it occurs continuously. Cooling with argon or air or mixtures of these gases is also conceivable.

[0016]

The invention is described in more detail below with the aid of the embodiments shown in the drawings. FIG. 1 is a cross-sectional view of a portion through the longitudinal axis of the converter, and FIG. 2 shows the detail of FIG. 1 in a cross section similar to FIG. 1 in enlarged dimensions. FIG. 3 is a drawing in the direction of arrow III in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG.

An opening 1 (hereinafter referred to as a probe opening) for introducing and removing a lance-shaped device, preferably for introducing and removing a measuring and / or sampling probe 2, is provided around the mouth 5, that is, Upper part 6 of the frustum of the converter 4
Through the wall 3 of the steel mill converter in the area of. Steel mill converter 4
The wall 3 is formed by an outer casing 7 made of steel, and a heat resistant lining, that is, an outer lining 8 and a heat resistant inner lining 9 are arranged inside the wall 3 of the outer casing 7. It is lined.

Viewed from the outside to the inside, the probe opening 1 is formed by a portion 12 which tapers towards a narrow area 11 located approximately in the center of the wall 3 and a portion 13 which expands again from this narrow area 11. Has been formed. The tapered portion 12 is lined with a metal jacket 14 in the form of a double jacket which surrounds an annular hollow chamber 15.

Hollow chamber 1 of double jacket 14
5 is closed to the outside of the converter, but the probe opening 1
At a narrow point 11 of the above, an opening is made with an annular gap 16 toward the inside 10 of the converter 4.

One or more gas supply devices 17 open into a double-jacketed hollow chamber 15 through which the device, preferably nitrogen, is introduced and annular to the interior 10 of the converter 4. It flows through the gap 16 and thus cools not only the tapered portion 12 of the probe opening 1 but also the enlarged portion 13 of the probe opening 1.

The enlarged portion 13 of the probe opening 1 does not have a metal lining, but the bricks 18 surrounding the portion 13 of the converter lining are made of a heat-resistant material, The heat resistance is higher than the heat resistance of the remaining heat resistant lining of the converter, that is, the inner lining 9.

The end of the double jacket on the outer side of the converter is surrounded by a rigid frame 19, which is welded to the casing 7 of the converter 4, thus increasing the stability of the probe opening 1 and the converter. 4. Prevent deformation of the lining and other damage.

In order to further cool the refractory material (refractory material) in the enlarged portion of the probe opening 1, that is, the brick 18, a hollow chamber 20 through which the refractory material passes is provided, and the converter 4 Extends approximately perpendicular to the outer surface of the upper part 6 of the. These hollow chambers 20 are
Common gas supply hood 21 connected to gas supply device 22
It opens towards.

A metal pipe 23 is inserted into the hollow chamber 20 with a gap, the metal pipe passes through the gas supply hood 21 without a gap, and the gas introduced into the gas supply hood 21 is supplied to the metal pipe 23 and the heat-resistant material. Flow through the annular gap formed between the hollow chambers 20 of the converter toward the interior 10 of the converter 4. This provides a particularly efficient cooling of this part of the backing.

A heat-resistant backing brick 18 surrounding the enlarged portion 13 of the probe opening 1 and having a higher heat resistance than the remaining bricks of the backing is preferably provided interchangeably. In the process of oxygen blowing, nitrogen (and / or argon and / or
(Or air) is supplied as a coolant for the probe opening 1 to the hollow chamber 15 of the double jacket 14 as well as to the gas supply hood 21 and the metal pipe 23.

As can be seen from FIG. 1 in particular, in the narrow area 11 of the opening of the probe 1, the longitudinal axis 24 of the measuring and / or sampling probe 2 is the backing 8 of the tubular portion of the converter 4. It passes through a line of intersection 25 between the cylindrical inner surface 26 of 9 and the inner surface 27 of the liners 8, 9 of the frustoconical upper part 6 of the converter 4.

Further, as is apparent from FIG. 2,
The lower surface 28 of the tapered portion 12 of the probe opening 1 is perpendicular to the longitudinal axis 29 of the converter 4, and the side surface 30 of the tapered portion of the probe opening 1 opposite the lower surface 28 is measured and / or Alternatively, they are arranged so as to be substantially parallel to the long hand axis of the sampling probe 2. The lowermost generatrix of the inner surface of the conical sheath of the enlarged portion 13 of the probe opening 1 is arranged to be substantially parallel to the upper surface 30 of the tapered portion 12 of the probe opening.

A support structure 32 for guiding the measuring and / or sampling probe 2 or other lance-like device required for the operation of the converter when inserted into the probe opening 1 is provided with a casing 7 of the converter 4. It is provided in.

[0029]

As described above, according to the present invention,
A metal container having an opening of the kind described above, which reliably prevents closure and which precipitates that may form do not hinder the insertion of measuring and / or sampling tips or other lance-like devices and are easy What can be removed can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a portion passing through a longitudinal axis of a converter.

FIG. 2 is an enlarged view showing details of FIG. 1 in detail.

FIG. 3 is a view in the direction of arrow III in FIG.

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

[Explanation of symbols]

 1 Opening 2 Measurement and / or Sampling Probe 4 Converter 7 Metal Outer Casing 8, 9 Heat-Resistant Lining 11 Thin Area of Opening 12 Tapered Area of Opening 13 Expanded Area of Opening 18 Heat-resistant material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norbert Ramade, Linz A-4020, Austria, Robert Storz-Strasse 14 (72) Inventor Manfred Eisn, Austria, Püchenau A-4040, Eschenbacher Weg 23 (72) ) Inventor Helmut Kerschbaum Austria, Neutzig A-4523, Ahornstraße 36 (72) Inventor Wilfried Pilkerbauer Austria, Niederneukirchen A-4491, Schmeedberg 13 (72) Inventor Barry Juri Nikolaevich Ukraine, Dneprojerzinsk Energachekov Street 44 (72) Inventor Uchichel Lev Mikhailov Chi Ukraine Dniprogerzinsk, 21-13, Let SSS Ale Street 50 (72) Inventor Goncharenko Gennadi Nikolaevich Ukraine, Dnipropetrovsk, Kirov Aveny 45-39 (72) Inventor Alfiolav Alexander Per Bravich Ukraine, Enerkieva, Komnische Cheskaya Street 45-41

Claims (12)

[Claims] 1. A metal container comprising a metal outer casing (7) and a heat-resistant backing (8, 9) provided inside the metal outer casing (7), and a metal lance-like device, which comprises measuring and / or measuring. A steel mill transfer comprising an opening (1) passing through a wall (3) of a container (4) for insertion of a sampling probe (2), preferably having the following characteristics: Furnace. 1. Area where the opening (1) is narrow when viewed from the outside
It is formed by a portion (12) which is tapered towards (11) and a portion (13) which expands from this narrow area (11). 2. The tapered portion (12) is lined with a metal sheath (14). 3. The enlarged portion (13) is formed of a heat resistant material (18), and its heat resistance is higher than that of the remaining heat resistant backing (8, 9) of the metal container (4). 2. A gas supply device (17) in which a metal sheath (14) of the tapered portion (12) of the opening (1) opens toward the annular hollow chamber (10), the hollow chamber (15) and 2. A double jacket in the form of a double jacket which opens in the interior (10) of the container with an annular gap (16) and encloses a hollow chamber (15) which is sealed in the direction of the exterior of the container. The described metal container. 3. In order to cool the heat-resistant material (18) of the enlarged part (13) of the opening (1), the gas-supply device (22) passes through the heat-resistant material (18) toward this. 3. Metal container according to claim 2, characterized in that a hollow chamber (20) is provided which is open. 4. The hollow chamber (20) comprises a gas supply device (2).
Metal container according to claim 3, characterized in that it opens towards a common gas supply hood (21) connected to 2). 5. A metal pipe (23) is inserted into the hollow chamber (20) with a gap, and the metal pipe passes through the gas supply hood (21) without a gap and is connected to each individual gas supply device. And the chamber surrounded by the gas supply hood (21) has a metal pipe (23) and a heat-resistant material.
A metal container according to claim 4, characterized in that it is connected to an annular gap formed between the hollow chambers (20) of (18). 6. A metal backing (14) for the tapered portion (12).
The metal container according to claim 1, wherein the metal container is designed as a truncated pyramid. 7. The lower surface (28) of the tapered portion (12) of the opening (1) is perpendicular to the longitudinal axis (29) of the metal container (4),
And the lower surface (2) of the tapered portion (12) of the opening (1)
8. The invention as claimed in claim 1, characterized in that the side surface (30) opposite to 8) is arranged substantially parallel to the lowest busbar (31) of the enlarged portion (13) of the opening (1). 6. The metal container according to any one of 6 above. 8. The cylindrical inner surface (26) of the lining (8, 9) of the metal container (4) with the axis of the measuring and / or sampling probe (2)
The metal container according to any one of claims 1 to 7, wherein the metal container has an angle of 19 to 22 degrees with respect to the longitudinal axis of the metal container. 9. A narrow zone (11) of the opening (1) is a measuring and / or sampling w probe (2) with a longitudinal axis (24) being a converter.
Inside of the backing (8, 9) of the cylindrical inner surface (26) of the backing (8, 9) of the tubular part of (4) and the upper part (6) of the shape of the truncated cone of the converter (4) 9. Converter according to any one of claims 1 to 8, characterized in that it is arranged so as to pass through the line of intersection (25) with the surface (27). 10. The outer end of the metal sheath (14) of the tapered portion (12) of the opening (1) is connected to the metal outer casing (7) of the metal container (4) through a rigid frame (19). The metal container according to claim 1, wherein the metal container is a metal container. 11. An enlarged portion (13) of the opening (1).
The metal container according to claim 1, wherein the metal container is designed in the shape of a truncated cone. 12. A process for operating a metal container in the form of a converter (4) according to any one of claims 1 to 11 with cooling of the opening (1), the opening (1) ) Cooling of enlarged part (13) and tapered part of opening (1)
Cooling the metal sheath (14) of (12), preferably with nitrogen, continuously during the course of the converter cycle.