DE1271325B - Mixing wagons for the transport of pig iron and other liquid metals - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN MFTSIK PATENT OFFICE

EDITORIAL

Int. Cl .:

B22d

German KL: 31 b2 - 41/12

Number:
File number:
Registration date:
Display day:

P 12 71 325.6-24
September 6, 1961
June 27, 1968

The invention relates to a mixer wagon for the transport of pig iron and other liquid metals, especially on longer routes, public railways, with an elongated to an in Axis of rotation running in the direction of travel, tiltable conveying vessel.

So-called torpedo mixer wagons are known from US Pat. No. 1151392, for example. The elongated vessel is lined along its inner form and has a tilting bearing at both tips, each of which rests on separate chassis, so-called balancers. During transportation of liquid pig iron from the blast furnace to the mixer or to other points of use by means of Transport ladles is concerned, because torpedo cars are used for relatively short distances whose heat losses are lower. Such wagons may only be moved slowly and have to Advantages of thermal insulation also have disadvantages. Particular inconveniences lie in the torpedo tips, which cool more quickly, therefore tend to bear marks, which later only with special effort and Costs can be eliminated.

The lining of the ends as well as the torpedo shape in general is another difficulty because of the Profile course requires a plurality of stone types, all of which must be kept in stock. Of the The lining operation also suffers from poor accessibility to the torpedo tips. This work is particularly troublesome.

Although an adequate volume is available in and of itself, this is reduced through the bear approaches. The torpedo shape naturally has a certain surface area ratio to the content, from which by the effective heat radiation Losses arise.

The cost-effectiveness of a torpedo cart does not only depend on the usable volume, but above all on the durability of the lining. With increasing driving speed, the brick lining is subject to particular stress. According to scientific knowledge, linings such as those of mixers and similar vessels are subject to an unfavorable condition between the steel jacket and the masonry. When cold, the masonry presses on the steel jacket due to its own weight. After the first heating, there is thermal expansion. The service life of the vessel also depends on the nature of the load conditions. These change constantly because the new condition is no longer valid after the first batch. During a mixer wagon for the transport of pig iron
and other liquid metals

Applicant:

DEMAG Aktiengesellschaft,

4100 Duisburg, Wolfgang-Reuter-Platz

Named as inventor:

Hans Hofmeister, 4100 Duisburg

In the furnace, the brick lining layer is reduced in thickness. The consequence of this is an increase in the Heat transfer and also enlargement of the inner cavity. The decrease in thickness and the influences as a result of operational stress, the properties of the brick lining also change significantly. The originally used values for expansion joints are mostly exceeded, so that the elasticity of the masonry decreases or at all in the case of constant heating and cooling may no longer be imputed. However, there is an increase in the vascular stress on the vessels that can not only be tilted, but also moved. So far, this sum is expressed by Stresses in a reduced number of batches. However, the torpedo wagons were within of the factory, this disadvantage is accepted as well as the uncertainty of the transport on the rail itself. There were no conclusions here, because safety and operation are essentially subject to the supervision of the individual steelworks and, at a correspondingly slower pace, Careful handling of the vehicle can be expected from state regulatory agencies approval was.

However, the situation is different with mixer wagons, which are used on longer routes or even outside of the city of a plant are to be operated on public railway systems. There are increased demands on that Masonry because of the impact stress resulting from the position of the track and track substructure place. The previous torpedo cars are useless for this. Furthermore, the demand arises higher speeds because public rail operations are not impaired by slow vehicles may experience. The problem of heat loss also deserves attention. With the

809 567/452

Claims (1)

An increase in the transport weight also increases the tension on the end walls of the vessel. indicated stress difficulties. mum occurs. The present invention was made in addition to the assumption of equivalent volume because of the fundamental shortcomings described, the oval shape is being exploited The task is based on the fact that less stones are necessary for certain 5 of the clearance profile the advantages of the transport ladle mixer measure the brick lining, this especially for the new (favorable bricklaying option) with those of the recurring economic advantages To combine torpedo mixer wagons, but without some _s as well as the lower weight of the masonry the main disadvantages of the strong heat dissipation itself and the advantage of less heat loss, and with it heat loss or the difficult Aus io whereby such a car with a much larger weight walling and clearing the tips of the torpedoes can be moved at a speed that is to have to accept. One of the goals is to demand lent lanes, the endeavors the invention, larger batches than before cope with the practice of the steelworker. This effort to be able to focus on the rationalization of the produc- Increase transports. 15 locations to cut costs. The invention provides the solution that the for- But also lying further away from the steelmakers The vessel, extending between the chassis, with ore processing plants located in the supply areas as a drawn down boiler from below blast furnace units can now be attached to one another the use of the clearance profile with an oval cross-section should also be closed. this flat end face terminating at both ends. The drawing shows an exemplary embodiment for walls is formed to which the above the driving, ·· the invention is shown. frames up to the "bearings" arranged in the middle. FIG. 1 shows a longitudinal view with partial running, designed as a hollow conical pin support section of the mixer wagon; constructions are connected. F1 g. 2 shows a cross section. The concentration 25 The actual vessel consists of a boiler 1 There are various advantages for the liquid metal. with lining 2, which according to Fig. 2 an approximately elliptical share. The surface remains small in relation to the cross-section of the table. Located in the middle Useful content, therefore less heat dissipation is the filling and pouring opening 3, from the to the environment. The concentra- the lining tangential to the elliptical outline tion space is kept as large as possible, but 30 lines, so that about the cross-section of a of such a shape that a durable and easy to produce. Converter results. adjustable masonry is possible, the stones of which are not are kept in several varieties. Approaches connected to those with which the vessel is in the bearings 6 smooth walls are practically rare, and and the counter bearings 1 is added. camp the removal of slag residues or bears 35 and counter bearings are each on a platform 8. approach is easy to carry out. The new infeed is set, which is carried out via a ball socket P on the of the vessel is also made considerably easier. The well-known way with balancing! Shaping of the oval masonry vault provides 10 is supported. The tipping mechanism Ii is in the driver's cab also the advantage of a durable insulation between 12 set up. see vessel jacket and insert stones. 40 One advantage of the new boiler design still exists vault shape in and of itself is suitable for driving in that the top of the end walls burner 13 and Better on uneven roads * because larger barriers are arranged to keep the bath warm Support forces between the stones can be absorbed, in such a way that they over the surface can be. To sweep away the vibrations of the path of the bath, so not narrowly limited 45 focal spots, but a large part of the wear, Diö better bricklaying is also hit on it surface. attributed that in the central space easier The elliptical shape of the container with its can be worked, because better movement steeply uphill side walls allows possibility of the staff exists. The larger room to install a cheap radiation protection, which in the Let’s look to the experience gained in practice and the interests of the operators gen more quickly emptied, which also in the steelworks other objects such. B> Cable and electrical is desirable. The inclusion of about 140 t and fixtures, in the vicinity of the wagon against more pig iron allows just about the Kapa protects the effects of heat. To achieve that, the capacity of a steelworks converter. The Er- are caught at a distance of about 50 mm finding does not, however, exclude batches of 200 55 IS sheets on the outside of the boiler wall or 3001 (see Fig. 2), the one at the lower end a schma-Freilich if it comes to a particularly strong len slit drop so that the air can enter at 17 Concentration of weight in the middle of the vehicle, while at the top it can have a funnel-like shape however, the end walls provide connection options to form an extension 16 from which the heated air is entfür the hollow tenons. Of particular value is the possibility of connecting a patent claim to 60 can give way to such end walls shaped neck of the hollow cone pin. Therefor the course of a cubic mixer wagon is particularly suitable for the transport of pig iron Parabola leading to a uniform material and other liquid metals, in particular stress leads. The 65 longer routes, public railways, run along this route conical cones together with the bottle neck - an elongated one in order to shaping to a maximum def resilience. running axis of rotation tiltable vessel, d u r c h In particular, the invention complies with the fact that. marked that this, between the chassis (10) extending as a downwardly drawn boiler (1) by taking advantage of the Clearance profile oval cross-section with these flat end walls terminating at both ends is formed on which the above the chassis (10) to the arranged in the middle Bearings (6, 7) running support structures (5) designed as hollow conical pegs are connected. Considered publications: German Patent Specifications No. 549 082, 914 612; U.S. Patent No. 1471205,2151392, 2341054. 1 sheet of drawings 309 567/452 6.68 © Bundesdruckerei Berlin