DE7612628U1 - DEVICE FOR ADDING SOLID MATERIALS IN A PAN TO RECEIVE LIQUID METALS - Google Patents

Description

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Meissner & Meissner

PATENT AGENCY OFFICE

BERLIN - MUNICH

PATENT LAWYERS

DIPL-ING. W. MEISSNER (BLN) DIPL-ING. P. E. MEISSNER (MCHN) DIPL-ING. H.-J. PRESTING (BLN)

HERBERTSTR, 22, 1000 BERLiN 33

Your sign Your letter from our sign Berlin, the

Case 11 575 / Mjr / Hk April 22, 1976

copy

Mannesmaim Aktiengesellschaft
Mannesmannufer 2
4000 Düsseldorf 1

"Device for introducing solids into a pan for the absorption of liquid metals "

The invention relates to a device for introducing ) of solids in a pan to 'hold liquid metals, especially when desulphurising steel.

There are plants, etc., wherein the immersion lance is known for introducing fine-grained treatment agents in molten steel with the aid of a carrier \ gases, consisting of carrier gas battery storage container via a feed line for the suspension flow with the slurry outlet of the Suspensators in compound and the immersion lance a mixing chamber is placed, which allows a feed of pressurized gas into the suspension flow, in which the immersion lance with auxiliary devices rigidly connected to the reservoir and can be raised and lowered with this to immerse the immersion lance- (DT-AS 23 03 978), with this or similar Attachments is

BORO MONKS: TEt c.X: TELEGRAM: PHONE: BANK ACCOUNT: CHECK ACCOUNT: ST. ANNASTR, 11 1 - 858 44 INVENTION BERLIN BERLIN 31 W. MEISSNER, BLN-W MOO MONKS 22 INVEN d BERLIN 030/891 60 37 BERLINER BANK AG. 122 82-109 TEL: 089/22 35 44 ΠΩ · ίΌ> OO30 / BS12M31_. __ 3695716000

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particularly disadvantageous that they are arranged stationary and a complex apparatus for introducing the solids need in the liquid melt. Another serious disadvantage is the vibration of the immersion lance. There is a risk of the refractory cladding flaking off, causing accidents due to being thrown out these pieces can be caused from the melt.

The object of the invention is to provide a device for introducing solids into a pan for receiving liquids To create metals with the solids regardless of the type and location of known injection devices can be blown into a pan without damaging the pan.

To solve this problem, a device is proposed which is characterized by one in the refractory Lining of the pan is interchangeably embedded feed line, 100 to 300 mm depending on the pan size protrudes horizontally into the pan above the bottom of the pan. The feed line is preferably subdivided, i. H. into a piece of pipe that protrudes over the edge of the pan and is inserted vertically and interchangeably in the pan wall an arch-shaped piece of pipe walled into a part that is independent of the rest of the pan wall.

With a corresponding wall thickness, it is also possible to insert a straight pipe into the casing arranged in the pan wall insert and bend the lower, free-standing pipe end after installation by 90 ° and the recess for the outlet the end of the pipe to then be filled with refractory material.

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The device according to the invention can of course be connected to the known stationary injection devices with a corresponding modification, but the greatest advantage is that, regardless of the location of the injection device, treatment of the ^!

Melt in the ladle can be done. In this case :

is the blowing device with the usual containers;

and units for the supply of the gaseous media and the aggregates arranged on a movable device, so that it can be driven to the pan. Regardless of which is related to the possibility - of on the location of the blowing device - location-dependent or location-independent blowing Advantages is achieved in any case by the inventive design of the supply line that none Damage to the pan occurs during the blowing process. The vertical piece of pipe in the wall is in the split Type of feed line with the arcuate part; in a suitable manner, e.g. B. connected gas-tight by screwing or welding. The vertical straight j

The pipe section is preferably inserted into one of the pan j

wall provided channel used. The one between pipe]

and the duct wall is filled with a!

flowable medium, e.g. B. sand, backfilled. The curved pipe part is after connection to the vertical Piece of pipe walled into the ladle wall with refractory material.

The device according to the invention eliminates the previously existing disadvantages, such as complex fixed systems, Avoidance of vibrations when introducing the solids and the causes of accidents that arise in the process. Another advantage of the solution according to the invention can be seen in the fact that, in contrast to the previous one

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known working method in which the entire injection lance with a refractory cover can be renewed after each use only had to renew the blowpipe and a small recess in the refractory lining are. Furthermore, the horizontal introduction of the carrier gas and solids flow occurs in a more even, more intensive manner Mixing with the melt directly on the bottom of the pan. The introduction can be by inclination of the outlet up to 45 ° deviating from the radial direction, so that the mixing of the liquid Pan contents is intensified. The device according to the invention is particularly suitable for desulfurizing Suitable for melting steel.

In the attached drawing is a possible execution form of a device according to the invention shown schematically.

Fig. 1 is a front view in section,

Fig. 2 is a plan view of Fig. 1 in section.

FIG. 1 shows the ladle wall 1 with a refractory lining 2. A channel 3 for receiving the pipe section 4 is inserted vertically into this lining. The arcuate pipe section 5 is inserted into a recess 6 and, after connection to the pipe section 4, is bricked up with refractory material 7. The pipe section 4 protrudes from the pan lining 2 and is provided with a suitable connection 8 for the blowing device. A flowable medium 9 is filled between the pipe section 4 and the channel 3.

The outlet 10 of the arcuate pipe section 5 can on the center of the pan (radial) or at an angle of up to 45 ° deviating from it.

• Compulsory claims - 6 -

7612628 07/27/78

Claims (5)

IB · ItI til ** · · · a · ι ■ tr «B · · · lit ···» · ■ ItIIfV * «I t · r« 'Pu LeirtMn Proverbs; 1. Device for introducing solids into a Pan for holding liquid metals, in particular for desulphurising steel, characterized by a in the refractory lining (2) of the pan (1) Embedded supply line, consisting of the pipe sections (4 and 5), which depending on the pan size 100 to Protrudes horizontally into the pan 300 mm above the bottom of the pan. 2. Device according to claim 1, characterized in that the in the pan wall (2) inserted vertically arranged over the pan wall protruding pipe pieces (4) are exchangeable. 3. Device according to claims 1 and 2, characterized in that that the arcuate pipe part (5) with refractory material (7) in the recess (6) of the ladle lining (2) is walled in. 4. Device according to claims 1 to 3, characterized in that that the outlet (10) of the arcuate tubular part (5) deviates radially or at an angle of up to 45 ° protrudes into the pan. 5. Injection device for a device to be introduced of solids according to one of the preceding claims, characterized in that the injection device with all necessary containers and units for the storage and supply of the gaseous media and solids Supplements is arranged on a movable device. 7612628 27.07.78