DE1533913B1 - Swivel converter - Google Patents

Description

3 4

after here not around the well-known shaking pan, when freshening and swiveling, the converter 3 which the bath shaft can be locked by a lock 12 without rotating the pan,

is produced. The converter 3 is suspended in an inner ring 13

From "Stahl und Eisen", 1966, pp. 771 to 782, there is a track 14 on which the eccentric ring 5 is mounted Finally, a converter is known in which 5 radial rollers 15 are in contact. More radial rollers 16 des Right position the well-known oxygen inflation process eccentric ring S lie on a raceway 17 of the

and the also known Kaldo support ring 4 in an inclined position. All of the radial rollers 15, 16 are Procedures can be carried out. It is mounted and used in pairs in rockers 18, 19

The converter is mounted in a raceway that is used to accommodate the converter when it is pivoted

via radial io arranged in pairs in rockers and in the direction of the eccentric radius

and axial rollers supported in a support ring. To the acting centrifugal force. That is, the centrifugal forces of the

Rotating the converter around its longitudinal axis are converter 3 are over the rollers 15 on the

the radial rollers are driven. revolving eccentric ring 5 and from this over the

Transferred to the support ring 4 for the implementation of the combination radial rollers 16.

The device known to the method is, however, already 15. Further radial rollers 21, 22 are used for support

because of the separate oxygen supply, the exhaust gas and stabilization of the rotating eccentric ring 5,

cleaning and adding the aggregates to the are not subject to the effects of centrifugal force,

both operating positions (LD and Kaldo position) Since the axial rollers 15, 16 only slightly against each other

very expensive. In addition, it is not suitable, which are offset, the eccentric ring 5 is under the input

The effect of centrifugal force corresponds to the shaking pan process only in a proportionate manner

to issue the appropriate movement. claimed a small area. To the weight and

The object on which the invention is based is thus the moment of inertia of the eccentric ring is now to keep a swivel converter with a small as possible, are those of the axial capacity for example 1001 to support the converter 3 serving support rollers 23, create, in which under inflation of oxygen and 25 24 attached to the converter and the support ring 4, while at the same time Bath movement after the eccentric ring initially erend only the corresponding running names Process pig iron can be refined. wears tracks. Here are 13 upper on the inner ring According to the invention, this object is achieved by providing support rollers 23 and support rollers which are lower on the support ring 4 that the converter vessel is attached eccentrically to a 24, while upper holding rollers 25 are attached to the support pinion Ring is suspended, one of which is attached to the conical ring 4 and lower retaining rollers 26 to the inner ring 13 Vertergefäß attached inner ring by means of rollers rotating converter 3 and the eccentric ring 5 at supported by a bar and in turn hold on by a tilting person.

known tiltable support ring rotatable by means of rollers From the above it follows that the holding rollers

is supported. 26, 26 when tilting, d. H. when the converter is at rest,

Preferably, the eccentric ring is only subjected to static loads on vertically, while the support bars Running surfaces of the inner ring and the support ring roll 23, 24 during the circular movement of the conical Radial vertebrae mounted in pairs in rockers or the rotation of the eccentric ring as well roles provided. The eccentric ring is supported according to the invention. For this reason appropriately with its designed as a raceway is the number of holding rollers with the same roller size Bottom on lower support rollers of the support ring, 40 significantly less than the number of support rollers. One while on the inner ring, on a raceway on the particularly compact design results when the Top of the eccentric lying upper support holder rollers 25,26 each in a gap between roles are arranged. Two support rollers 23, 24 are provided to hold the converter. To cheap roll off According to the invention, tilting can be achieved on the support ring and relationships with line contact are to be achieved on the inner ring upper and lower holding rollers arranged 45 the radial rollers 21, 22 as cylinder rollers and the net, which are only statically stressed, since the support and holding rollers 23 to 26 are conical rollers from converter Always formed at rest during tipping, whereby to ensure a calm finds. Laufes all roles are elastically mounted.

The invention is described below with reference to a To the thermal expansion of the converter 3 of

In the embodiment shown in the drawing 50 to keep the rollers and raceways away, is the

explained in more detail. In the drawing, the converter shows brackets 27 with the inner ring 13

F i g. 1 a vertical section through a con- connected, with only two opposite each other by about 90 °

verter according to the invention and staggered consoles a rigid connection

F i g. 2 in the upper half to form a section. The other consoles, however, are axial

the line I-I and in the lower half a section 55 slidably attached to the inner ring 13. An off

according to the line H-II of Fig. 1. cover28 protects the converter bearing and the

Eccentric ring between converter 3 and support ring 4 to protect against dust and converter ejection,
If there is an eccentric ring 5, which is equipped with a toothed ring 6, if the cone is fitted into which the pinion of the center of a turntable moves due to thermal expansion, this has no effect on the size of the drive 7. As a result of the eccentricity of the centrifugal force, since this is determined solely by the radius of the eccentric eccentric ring 5, the converter can be determined by the terring 5. For a 100 t converter, drive 7 set in a circular motion results from the position according to the invention. In order to prevent the converter from rotating itself around its longitudinal axis, the construction and size extend, although the speed of the eccentric ring between the converter casing and the support ring 4 65 is about 35 rpm and is articulated at one Support 8. The support ring 4 with a gear rim diameter of about 10 m one sits two pins 9 and 11, which sit in bearings that are customary in converters with a circumferential speed of almost 20 m / sec. In superscript, ie there.

1 sheet of drawings

Claims (9)

1 2 Operation is carried out by the shaking pan without any claims of its own: Rotation is a circular movement in which the melt above a critical speed has a 1. Swivel converter for metallurgical loading wave forms, which an extremely good negotiation of iron, especially for freshening 5 mixture and thus an acceleration of the in the of pig iron after the blow-up oxygen melt, in particular the procedure, whereby the converter vessel results in a circular desulfurization and denitrification. shaped rotary movement without self-rotation around executes its axis, characterized by a capacity of about 5 to 7 t Frisch shows that the converter vessel (3) excentric tests have been carried out in which oxygen is trically suspended in a driven ring (5) on the bath which is in lively motion which has been inflated to one attached to the converter vessel (3). In the context of such fresh inner ring (13) tests rotatable by means of rollers (23) it was found that as a result of the supports and in turn of a known better (tiltable) support ring (4) by means of rollers compared to the conventional inflation method ( 24) i ₅ bath mixing a more rapid decarburization and rotatably supported. an oxidation of phosphorus, silicon and others 2. Swivel converter according to claim 1, marked accompanying elements of the pig iron before decarburization is characterized by in the eccentric ring (5) on vertical and better desulfurization by combustion raceways (14,17) of the inner ring (13) and part of the sulfur of the slag SO ₉ results. Support rings (4) radial rollers (15,16; ao The better metallurgical effect of oxygen-21, 22). inflation method in the shaker is next to the 3. Swivel converter according to claims 1 better bath mixing due to the fact that ä and 2, characterized in that the radial- the fresh reactions at relatively low ™ rolls in pairs in swing (18,19) are not stored blowing pressure over the so-called focal point. as but indirectly via the slag cover. 4. Swivel converter according to claims 1 Finally, the one in a shaker pan through to 3, characterized in that the eccentric inflation of oxygen is a refined steel ring (5) with its lower nitrogen content designed as a raceway than in a stationary one Underside on lower support rollers (24) of the support converter of rejuvenated steel. ring (4) rests. 30 The application of the test melts in 5. Swivel converter according to claims 1 shaking pans with low capacity 4, characterized in that the knowledge gained on the inner ring on the large-scale manufacture (13) on a track at the top of the position of steel in vessels with for example 1001 Eccentric ring (5) lying upper support rollers (23) capacity has so far failed because are arranged. 35 does not use the known swivel mechanisms 6. Swivel converter according to claims 1 movement of such large units are suitable. The herbis 5, characterized by the support ring (4) and conventional shaking pans are namely in one on the inner ring (13) arranged lower and upper horseshoe-shaped or triangular swivel frame Holding rollers (25, 25). stored, which is supported at three points by bearing blocks 7. Swivel converter according to claims 1 40 will carry. In each of the bearing blocks there is one of to 6, characterized in that the support an electric motor driven crank certain and holding rollers (23 to 26) mounted as tapered rollers and eccentricities. With three at the corner points the radial rollers (15, 16; 21, 22) are designed as _roller cranks arranged in a cylinder emes equilateral triangle. the result is a uniform crank load, the f 8. Swivel converter according to claims 1 45 upper limit, however, is 70 to 801 per crank, to 7, characterized in that the inner ring contains a maximum pan capacity of 301 (13) talking to him about loose and fixed consoles (27). Shaking pans with a capacity Converter jacket is connected. of 30 t, however, already require such expensive special 9. Swivel converter according to claims 1 stock that their use is not economically tragbis 8, characterized in that it appears between 50 bar. On the other hand, if you use more than three If the converter casing and the support ring (4) have cranks, special measures must be taken hinged support (8) extends. to ensure an even load. However, that stands for the liquid Melt caused different heating 55 and thermal expansion of the device parts, so that it is easy to jam between The invention relates to a swivel see the cranks can come, converter for the metallurgical treatment of iron, after all, there is already a centrifugal ladle in particular for refining pig iron after it has been proposed to operate at three points in one Oxygen inflation process, with the converter frame 60 being mounted at an inclined position. the vessel a circular rotational movement without its own tip of the conical tapering downwards rotation about its axis. The centrifugal stand is provided with a drive, so From the German Auslegeschrift 1 030 037 is that the Sehleudergerüst extends over a circular already known a shaking pan, the swivel rolling track in point contact on a mechanism consisting of a fixed, slightly larger diameter rolling track resting on a disc consists, which can roll between the disc and one. Performs to generate a bath wave lower, rotatable around a fixed axis and attached to the pan together with the steering wheel frame driven table an eccentric ring is arranged. In rotation about its central axis; it is