Apparatus for dividing a briquette string

Abstract

The invention relates to an apparatus (6) for dividing a briquette string (5) which has a plurality of contiguous briquette rows (5a) that are arranged one behind the other (in a longitudinal direction (L)) and each comprise, adjacent to one another, a plurality of briquettes (7) connected by material webs (8a, 8b), in particular for manufacturing briquettes (7) from direct reduced iron, said apparatus comprising: a movable beater device (9) which has a plurality of beaters (13) arranged adjacent to one another; and a feed device (10) via which the briquette string (5) can be fed to the beater device (9) in a transport direction (T), the beater device (9) striking the briquette string (5) fed by the feed device (10) with the beaters (13) in such a way that firstly a briquette row (5a) is knocked off the briquette string (5), and secondly the briquette row (5a) is divided into the individual briquettes (7). The apparatus is characterised in that: the beater device (9) and the feed device (10) are designed to divide a briquette string (5) having briquette rows (5a) which each have at least three briquettes (7) arranged adjacent to one another; and the beater device (9) has at least three beaters (13) arranged adjacent to one another. According to the invention, the feed device has at least two mutually spaced noses adjacent to one another, at least one of these noses being designed and / or oriented in such a way that a distance, which widens in the working direction and over which the divided briquettes are discharged, is formed between this nose and the nose located next to it.

Description

[0001] Device for cutting a briquette strand

[0002] Description:

[0003] The invention relates to a device for cutting a briquette strand which has a plurality of connected briquette rows arranged one behind the other (in a transport direction), each of which has a plurality of briquettes connected by material webs next to one another, in particular for the production of briquettes from directly reduced iron, with a movable beater device which has a plurality of beaters arranged next to one another and with a feed device via which the briquette strand can be fed to the beater device in a transport direction, wherein the beater device strikes the briquette strand fed by the feed device with the beaters in such a way that on the one hand a row of briquettes or individual rows of briquettes one after the other is / are beaten off the briquette strand and on the other hand the row of briquettes or rows of briquettes (each) is / are divided into individual briquettes.

[0004] Furthermore, the invention relates to a plant for producing briquettes, in particular a plant for hot briquetting (e.g., of directly reduced iron), comprising a briquetting press with which a briquette strand can be continuously produced and a device arranged downstream of the briquetting press for cutting the briquette strand emerging from the briquetting press. This device for cutting the briquette strand is also referred to as a briquette separator or briquette strand splitter.

[0005] Preferably, the device or plant relates to the production of briquettes from directly reduced iron or DRI (direct reduced iron), which is also referred to as sponge iron or sponge iron. The briquettes are also

[0006] referred to as hot-briquetted iron or hot briquetted iron (HBI). The starting material is produced by the direct reduction of iron ore, and briquettes are produced from this starting material in the plant, preferably in one or more briquetting presses for hot briquetting. Such briquetting presses are designed, for example, as roller presses, which have two counter-rotating press rollers whose circumferential surfaces or roller surfaces are equipped with mold troughs or mold depressions, so that as the material passes through the roller gap formed between the briquetting rollers, a briquette strand is created. This strand has several briquette gaps extending next to one another in the transport direction and consequently in the longitudinal direction of the strand, and a plurality of briquette rows arranged one behind the other in the transport direction, wherein the briquettes arranged in the gaps and rows are connected by material webs.In order to separate the briquettes connected to the briquette strand via the material webs after the pressing process, the briquetting press is equipped with a device for dividing the briquette strand, known as a "separating device." This separating device, also referred to as a separator, is the focus of the invention.

[0007] The device for cutting the briquette strand comprises at least one beater device with beaters, which is designed, for example, as a rotating beater wheel or comprises such a beater wheel, wherein the beater wheel has a plurality of rows of beaters distributed over the circumference, each with beaters arranged next to one another. Furthermore, the device comprises a feed device with which the briquette strand is fed into the area of ​​the beater device, wherein such a feed device is designed, for example, as a feed trough or feed chute, so that the briquette strand is conveyed from the briquetting press into the area of ​​the beater device by gravity. The feed device (e.g. the

[0008]

[0009] The chute (also known as a chute) has a striking edge at its end that runs transversely to the direction of transport of the briquettes, so that as the hammer device moves, a row of briquettes (i.e., a briquette bar) is struck off the briquette strand. Furthermore, at least one nose is arranged on or in the area of ​​the feed device, which is located, for example, at or below the striking edge and with which the individual briquettes of each row of briquettes are separated.

[0010] The feeding device can also be equipped with an additional hold-down device which presses the briquette strand fed from the briquetting press onto the feed chute or feed chute and thus prevents the strand from deflecting or doubling.

[0011] In practice, briquetting presses (for hot briquetting) typically use surface tools with two adjacent mold cavities, producing a briquette strand with two adjacent briquette gaps. This means that each row of briquettes consists of two individual briquettes connected by a material web. Such a briquette strand is divided using a separator of the type described. In practice, a single nose is provided below the impact edge for separating the two briquettes in the row.

[0012] Overall, the components of such a system and such a device for cutting the briquette strand are subject to high stresses. In the case of hot briquetting, the components must withstand high temperatures, as hot briquetting takes place at temperatures between 250 °C and 750 °C.

[0013]

[0014] A system for producing briquettes with a device for cutting a briquette strand of the type described above is known, for example, from WO 95 / 09080 and WO 95 / 09079 A1. The beater device of the briquette strand splitter is designed as a beater wheel, which interacts in the manner described with a feed device designed as a chute or guide rail. The briquette strand fed from the press consists of two adjacent briquette gaps, i.e. each individual briquette row cut off consists of two adjacent briquettes. In order to separate such a row of briquettes cut off from the briquette strand, a single nose is provided on the feed device, which cuts through the central web of the briquette strand.

[0015] A comparable system is described in DE 35 07 166 A1, wherein the roller press has two counter-rotating briquetting rollers which have hollow shapes around the circumference corresponding to the briquettes and produce a two-column briquette strand, the briquettes of which are connected to one another by webs and are separated by the crusher, with both the webs running transversely to the strand's longitudinal direction and those running in the strand's longitudinal direction being crushed. The crusher, in turn, has a rotor with a plurality of impact plates mounted on the circumference, which run in a radial direction and have a recess in the center. As the crusher rotor rotates, the impact plates pass a crusher nose at the recess, which continues to support the briquette strand sliding down the chute after it leaves the front edge of the chute.As a result, the briquette strand rests with its break edges running perpendicular to the strand's longitudinal direction on the front edge of the chute, and with its break edge running centrally in the strand's longitudinal direction on the crusher nose when the impact plates hit the individual briquettes. The briquette strand breaks along these break edges, thus producing the individual briquettes.

[0016]

[0017] The same applies to a plant known from DE 25 14 703 A1, in which the briquette strand also has two columns arranged next to each other, so that each individual row of briquettes consists of two briquettes which are divided by a single crusher nose.

[0018] Installations for briquetting and in particular for hot briquetting, in which a briquette strand is divided into individual briquettes by a separating device, are also known in various embodiments from EP 3 183 371 B1, US 6 352 573 B2, US 5 731 272, US 6 340 378 B1 and EP 3 760 749 A1 as well as WO 2008 / 078936 A1.

[0019] EP 2 930 452 B1 also describes a device for separating particles of a plate-shaped HBI strand, which device has two interacting rollers.

[0020] Other embodiments of crushers or crushing devices for briquetting are described in US 3 300 815 and DE 22 00 255.

[0021] The known systems for briquetting and in particular for hot briquetting are - as mentioned - usually equipped with briquetting presses that produce a briquette strand or material strand with two briquette gaps arranged side by side, i.e., the forming cavities are arranged in two circumferential rows arranged side by side around the circumference of the roller press, i.e., two forming cavities are placed side by side on the circumference of the roller. The production of briquettes with such systems has proven to be extremely successful in practice, since in particular, perfect separation is achieved with the cutting devices described above, where, for example, a

[0022]

[0023] Beater wheel interacts with a striking edge of the feed chute and a single nose.

[0024] In practice, however, there is a need to increase production capacities and consequently optimize briquetting, especially hot briquetting, from an economic perspective. This is where the invention comes in.

[0025] The invention is based on the object of creating a device for cutting a briquette strand and consequently a briquette separator of the type described above, which enables a particularly economical production of briquettes with a simple structure and trouble-free operation.

[0026] To achieve this object, the invention teaches, in a generic device of the type described at the outset, that the beater device and the feed device are designed for cutting a briquette strand with briquette rows, each of which has at least three briquettes arranged next to one another, that the beater device has at least three beaters arranged next to one another, that the feed device has at least two noses arranged next to one another and that of the (several) noses of the feed device arranged next to one another, at least one of the noses is designed and / or oriented in such a way that a distance widening in the working direction is formed between this nose and the nose arranged (immediately) next to it, via which distance the divided briquettes are discharged.

[0027] The invention is based on the realization that the economic efficiency of a briquetting plant can be increased if a briquetting press is used to produce a briquette strand that not only has two adjacently arranged

[0028]

[0029] briquette gaps, but more than two briquette gaps, i.e. at least three and, for example, four briquette gaps or at least four briquette gaps. The plant capacity is therefore not simply increased by using more briquetting presses which, in the conventional way, produce, for example, a briquette strand with two briquette gaps, but rather by using briquetting presses with a higher capacity, namely with at least three briquette gaps, e.g. at least four briquette gaps. Based on this consideration, the briquette separator, i.e. the device for cutting the briquette strand, is set up in such a way that this briquette strand, whose briquette rows each have at least three briquettes arranged next to one another, is cut perfectly.For this purpose, both the beater device and the feed device are optimized, because in a preferred embodiment the beater device has at least three beaters arranged next to one another and the feed device has, for example, on or below the beating edge two or more noses for cutting up the individual rows of briquettes, which according to the invention are formed from at least three briquettes with two webs provided between the briquettes, for example at least four briquettes with three (longitudinal) webs provided between the briquettes.

[0030] The beater device is preferably designed (in a generally known manner) as a rotating beater wheel or it comprises such a rotating beater wheel. According to the invention, the beater wheel comprises a plurality of beater rows distributed over the circumference, each of which has at least three beaters arranged next to one another. Alternatively, however, a beater device can also be used in which, instead of a rotating beater wheel, a beater element which is, for example, linearly movable is provided, which has, for example, a single beater row with at least three beaters arranged next to one another, wherein such a linearly operating beater element, for example, periodically in a linear direction

[0031] is moved back and forth, e.g., lowered and raised. However, the aforementioned beater device with a rotating beater wheel is preferred.

[0032] Of particular importance within the scope of the invention is the increased number of beaters on the beater device and the increased number of projections and, consequently, protrusions below the impact edge of the feed device. To this end, the invention proposes, in a preferred development, that the number n of beaters (in a row of beaters) on the beater device be one greater than the number m of projections on the feed device, i.e., n = m + 1, where n > 3.

[0033] Alternatively or additionally, it is provided that the number n of beaters on the beater device is equal to or less than the number b of briquettes in the briquette rows, ie n = b or n < b, with b > 3, e.g. with b > 4. Preferably, n = b.

[0034] Alternatively or additionally, it is provided that the number m of lugs on the feeding device is smaller than the number b of briquettes in the briquette rows, ie m 3, e.g. with b > 4.

[0035] In a variant of the invention, the number n of strikers is equal to the number b of briquettes and the number m of lugs is one less than the number b of briquettes, i.e. n = b and m = b - 1 and, consequently, m = n - 1 . In this variant, the number b of briquettes can be even or odd. In this variant, each briquette in a row of briquettes is always assigned a striker, i.e., each briquette is hit by its own striker. Furthermore, each material web between two adjacent briquettes in a row of briquettes is assigned a lug.

[0036] This means that each material web of a row of briquettes (directly) hits a nose assigned to this material web when it is cut.

[0037] It is always advantageous to ensure not only perfect separation of the briquettes, but also perfect and trouble-free removal of the separated briquettes. For this purpose, it is particularly preferably provided in the embodiments according to the invention that at least one inner beater arranged between outer beaters can be guided between two (immediately) adjacent noses, so that each beater passes through two adjacent noses. This ensures perfect removal of the briquettes, in particular the inner briquettes which are arranged in a row of briquettes between the outer briquettes. After separation, one or more inner briquettes therefore not only fall (passively) through the area between the noses, but are carried or guided through the space by at least one beater.

[0038] A first embodiment is provided, for example, for cutting a briquette strand with three briquette gaps, i.e., with briquette rows, each having three briquettes arranged next to one another. In this case, the impactor device has three impactors, and the feeder device has two noses (arranged offset in the transverse direction), each impactor being assigned to a briquette in a briquette row, and each nose being assigned to a material web arranged between two adjacent briquettes. In this first embodiment, the individual impactors therefore strike the individual briquettes directly, and the noses act directly on the briquette webs arranged between them, ensuring perfect separation.

[0039] A second embodiment of the invention is provided, for example, for cutting a briquette strand with four briquette columns, ie with briquette rows, which

[0040] each have four briquettes arranged next to one another. The impact device has four impactors and the feed device has three noses (arranged offset in the transverse direction), with each impactor being assigned to a briquette in a row of briquettes and with each nose being assigned to a material web arranged between two adjacent briquettes. In this second embodiment too, the individual impactors - as in the first embodiment - therefore strike the individual briquettes directly and the noses act directly on the briquette webs arranged between them, so that perfect separation takes place. The noses are each offset from the impactors in the transverse direction, i.e. transversely to the working direction.

[0041] The invention can also be implemented in briquette strands with more than four briquette columns, in which the individual briquette rows consequently have more than four briquettes arranged next to one another, whereby the number of briquettes in a briquette row can be even or odd.

[0042] In addition to fast and reliable fragmentation, the proper removal of the separated briquettes from the area of ​​the hammer device is of particular importance for the smooth and economical operation of the plant. In particular, disruptions due to jamming or blockages in the area of ​​the hammer device should be avoided. To this end, it is proposed that of the at least two adjacently arranged lugs of the feed device, at least one of the lugs is designed and / or oriented in such a way that a gap is formed between this lug and the immediately adjacent lug, which gap widens in the working direction and over which the separated briquettes are removed. This can be achieved, for example, by at least one of the lugs being oriented at an angle and / or having a

[0043]

[0044] thickness. Preferably, at least two lugs are each oriented obliquely and / or at least two lugs have a thickness that tapers in the working direction. This can be, for example, two lugs arranged directly next to one another. In a briquette row with (only) three briquettes arranged next to one another, preferably (only) two lugs arranged next to one another are provided, which are oriented obliquely to one another in opposite directions and, for example, form a funnel-like widening space. As an alternative to an oblique orientation of a lug, the invention also includes a bent or curved orientation or design. Thus, with only two lugs, these can be bent in opposite directions so that the widening space results in the working direction. In an embodiment with, for examplethree noses, it is proposed that of the several noses of the feed device arranged next to one another, the two outer noses are designed and / or oriented in such a way that a distance widening in the working direction is formed between the respective outer nose and the inner nose arranged next to it, over which distance the divided or separated briquettes are discharged. This can be achieved, for example, by the outer noses each being oriented at an angle (or bent) and / or having a thickness that tapers in the working direction. By means of an angled (or bent) orientation and / or a tapered thickness, a distance that increases in the working direction can be created between the noses, so that a space that widens (e.g. funnel-shaped) is created for the discharge of the individual briquettes in the working direction.

[0045] Further advantages are achieved by a preferred arrangement of the lugs in the working direction. It is optionally proposed that one or more of the several adjacently arranged lugs be positioned opposite one or more of the other (e.g. adjacent) lugs in the working direction.

[0046] is or are offset. This means that (particularly when there are at least three lugs) it is possible to arrange an inner, e.g. a central lug so that it is offset downwards in the working direction compared to the outer lugs arranged next to it, or to arrange it so that it is offset upwards in the working direction. It can be provided that the lugs are arranged in such a way that when the strikers arranged next to one another hit the briquette strand, the two outer briquettes are first separated via the two outer lugs arranged in front, and only shortly afterwards the two middle briquettes are separated by the lug arranged downstream or set back in the working direction. This also prevents malfunctions caused by the briquettes becoming jammed or blocked. In this embodiment, the central or middle lug is therefore arranged a predetermined amount below the two outer lugs.In an alternative embodiment, the central nose can also be arranged in front, so that when the strikers arranged next to each other hit, the central web is cut first and only shortly afterwards the two outer webs are cut.

[0047] In an embodiment in which a central nose is omitted, the two (outer) noses provided are preferably arranged at the same height.

[0048] The special arrangement of the lugs and in particular an oblique arrangement and / or an offset arrangement is particularly advantageous in embodiments in which each web is assigned a lug, so that the distance between all the lugs is relatively small.

[0049] Alternatively or in addition to the slanted and / or offset arrangement of one or more noses, the removal of the briquettes can be ensured or improved by using two adjacent

[0050]

[0051] The device is therefore designed such that at least one inner striker arranged between outer strikers is guided between (immediately) adjacent noses during operation.

[0052] The invention relates not only to the described cutting device or separator, but also to a plant for producing briquettes equipped with such a separator. The plant has at least one briquetting press, in particular a hot briquetting press, with which at least one briquette strand of the described type is continuously produced, each briquette row comprising at least three, e.g., three or four briquettes (or even more than four briquettes) next to one another. Furthermore, the plant has at least one cutting device of the described type arranged downstream of the briquetting press and, e.g., below the briquetting presses, which serves to cut the briquette strand emerging from the briquetting press. The cutting device essential to the invention is therefore also protected as a component of a briquetting plant and consequently in combination with an associated briquetting press.

[0053] The invention preferably relates to the briquetting of hot material and consequently to hot briquetting. The invention particularly preferably relates to the hot briquetting of directly reduced iron and consequently to the production of HBI (hot briquetted iron). However, the invention can also be used for briquetting or for cutting a briquette strand made of other materials.

[0054] The invention will be explained in more detail below with reference to drawings, which, however, only represent exemplary embodiments.

[0055]

[0056] Fig. 1 a plant for producing briquettes in a simplified side view,

[0057] Fig. 2 shows a device for cutting the briquettes from a plant according to Fig. 1,

[0058] Fig. 3 shows a first embodiment of the article according to Fig. 2 in a side view of the circumference of the racket device,

[0059] Fig. 4A is a vertical section A - A through the article according to Fig. 3,

[0060] Fig. 4B is a vertical section B - B through the object according to Fig. 3,

[0061] Fig. 5 shows a second embodiment of the invention,

[0062] Fig. 6A is a vertical section C - C through the article according to Fig. 5,

[0063] Fig. 6B is a vertical section D - D through the article according to Fig. 5,

[0064] Fig. 7 shows a third embodiment of the invention,

[0065] Fig. 8 shows the object according to Figure 7 in a (simplified) perspective view.

[0066] Fig. 1 shows a briquetting plant and, consequently, a plant for producing briquettes, which is particularly designed for hot briquetting. This plant comprises a briquetting press 1 equipped with two counter-rotating briquetting rollers 2, the surfaces of which are provided with molding cavities 3 for forming briquettes.

[0067]

[0068] A briquette strand 5 continuously emerges from the roller gap 4 of the briquetting press, which is then divided in a cutting device 6 arranged downstream of the briquetting press 1, ie the briquette strand is divided into individual briquettes 7. This cutting device 6, which is a component of the system shown in Fig. 1, is shown in detail in Figs. 2 to 8.

[0069] The briquetting press 1 is designed within the scope of the invention for producing a briquette strand 5, the briquette rows 5a of which are arranged one behind the other in the longitudinal direction L and have at least three, preferably at least four briquettes 7 arranged next to one another. For this purpose, the rollers 2 of the briquette press 1 are equipped over the circumference with a plurality of rows 3a of mold cavities 3, wherein each row 3a in the exemplary embodiment has four mold cavities 3, so that the briquette strand 5 described and visible, for example, in Fig. 8 is produced, which is composed of four briquette gaps 5b extending in the longitudinal direction L and of a plurality of briquette rows 5a arranged one behind the other in the longitudinal direction L (each with, for example, four briquettes 7 arranged next to one another), wherein the briquette rows arranged one behind the other are connected by transverse webs 8a, ieby webs in the transverse direction and the adjacently arranged briquettes 7 of a single briquette row 5a and consequently also the briquette columns 5b of the strand 5 are connected by longitudinal webs 8b.

[0070] The cutting or separating device 6 for cutting the briquette strand 5 consists in the exemplary embodiment of a movable beater device 9 on the one hand and a feed device 10 on the other hand, via which the briquette strand 5 can be fed in a transport direction T into the area of ​​the beater device 9 (see, for example, Fig. 2). The beater device 9 is equipped in the exemplary embodiment with a rotating driven beater wheel 11, wherein this beater wheel 11 has a plurality of beater rows 12 distributed over the circumference with

[0071] each having a plurality of strikers 13 arranged next to one another. This rotating striker wheel 11 strikes the fed briquette strand 5 with the strikers 13 in such a way that, on the one hand, a row of briquettes 5a is struck off the briquette strand 5 and, on the other hand, the row of briquettes 5a is divided into the individual briquettes 7. According to the invention, the striker device 9 on the one hand and / or the feed device 10 on the other hand are designed for cutting up a briquette strand 5 with four briquette gaps 5b arranged next to one another and consequently with briquette rows 5a arranged one behind the other, each having at least four briquettes 7 arranged next to one another. In the exemplary embodiment shown, both the striker device 9 (i.e. in particular the striker wheel 11) and the feed device 10 are adapted to the shape of the briquette strand 5 with, for example, four briquettes 7 arranged next to one another. For this purpose, the striker device 9 orThe beater wheel 11 has at least three beaters 13 arranged next to one another. In the illustrated embodiments, either three or four beaters 13 arranged next to one another are provided. This will be discussed in more detail below. The feed device 10 has, in a generally known manner, a striking edge 14 at its end for knocking off the briquette rows 5a. This is because the feed device is designed as a material chute or it has such a material chute 15. Furthermore, the feed device 10 can have a hold-down device (not shown) that presses the briquette strand 5 onto the chute 15 in order to prevent it from deflecting or duplicating. The end of the material chute 15 forms the striking edge 14, via which the briquette rows 5a are knocked off by the rotating beater wheel 11, so that briquette bars are separated as briquette rows 5a.According to the invention, a plurality of noses 16 or projections are provided in the region of the striking edge 14 or below the striking edge 14, in such a way that during the striking with the strikers 13 on the separated briquette row 5a, this briquette row 5a is broken down into individual briquettes 7.

[0072] is broken. As a result of the action of the strikers 13 on the end of the briquette strand 5, the transverse webs 8a between the briquette rows 5a are severed at the striking edge 14, and the longitudinal webs 8b between the individual briquettes 7 of a briquette row 5a are severed at the noses 16.

[0073] In the illustrated embodiments, the number n of beaters 13 on the beater device 9 is one greater than the number m of noses 16 on the corresponding feed device 10, ie n = m + 1 applies, specifically in the embodiments with n = 3 or n = 4.

[0074] In the illustrated embodiments, the number n of strikers 13 on the striker device 9 is equal to the number b of briquettes 7 in the individual briquette rows 5a, i.e. n = b. The number m of lugs 16 on the feed device 10 is one less than the number b of briquettes 7 in the briquette rows 5a, i.e. m = b - 1. b > 3 or b > 4. Figures 3 to 6B show embodiments with b = 4 and accordingly m = 3. Figures 7 and 8 show an embodiment with b = 3 and accordingly m = 2. b can therefore be even or odd. A separate striker 13 is always (preferably) assigned to each briquette in a briquette row, and a separate lug 16 is assigned to each material web 8b between two adjacent briquettes in a briquette row.

[0075] Based on these general dimensional considerations, Figures 3, 4A, 4B on the one hand and Figures 5, 6A and 6B on the other hand show two embodiments in which the beater device 9 has a plurality of rows 12 each with four beaters 13, while the feed device 10 has three adjacently arranged noses 16. In these embodiments, each beater 13 of a row 12 of beaters is assigned to a briquette 7.

[0076] assigned to a briquette row 5a. Each individual nose 16 is assigned to a material web, namely a longitudinal web 8b within a briquette row 5a, i.e., a longitudinal web 8b between two adjacent briquettes 7 within a briquette row 5a. Thus, it can be seen in these figures that, as the striker wheel 11 rotates, a row of strikers 12 with four adjacent strikers 13 strikes a briquette row 5a with four briquettes 7, specifically against the three noses 16 arranged below the striking edge 14, so that the briquette row 5a is separated. The same applies to the embodiment according to Figs. 5, 6A, and 6B.

[0077] The embodiments according to Fig. 3 (or 4A, 4B) on the one hand and Fig. 5 (or Figs. 6A and 6B on the other hand) differ in the arrangement of the three lugs 16 along the working direction R. Reference is made to a comparative analysis of these figures. It can be seen that in the embodiment according to Fig. 3 (or 4A, 4B) the two outer lugs 16 are arranged upstream of the central, inner lug 16 in the working direction R, i.e. the inner lug 16 is arranged downstream of the outer lugs 16 in the working direction and is therefore arranged below the outer lugs by a predetermined amount. This can also be seen in a comparative analysis of Figs. 4A and 4B, where in Fig. 4A one of the outer lugs can be seen and in Fig. 4B the central lug, which is lowered in comparison, can be seen.

[0078] In contrast, in the embodiment according to Fig. 5 (or 6A, 6B), the outer lugs 16 are lowered relative to the inner lug 16, i.e., the central lug is positioned forward of the outer lugs and thus higher. This again becomes clear from a comparative examination of Figs. 6A and 6B, where Fig. 6A again shows one of the outer lugs and Fig. 6B shows the central lug.

[0079]

[0080] Furthermore, in the embodiments according to Figures 3 and 5 and 6A, B, a special orientation of the outer lugs 16 is provided, because these outer lugs 16 or their inner guide surfaces are oriented obliquely, so that between the outer lugs 16 and the inner lug 16 there is a distance X which widens in the working direction R and through which the divided briquettes 7 are removed. In particular, by combining this oblique position on the one hand and the offset arrangement on the other hand, a sufficient space is provided between the lugs 16, through which a smooth removal of the individual briquettes 7 can take place without jamming or blockages occurring, which lead to a standstill of the system. The lugs 16 themselves can be obliquely positioned (or bent / curved) or they each have (inner) oblique (or bent / curved) guide surfaces, which, for example,can be realized in that the noses 16 themselves have an uneven thickness and taper in the working direction or transport direction.

[0081] Figures 7 and 8 show a further, particularly preferred embodiment of the invention, which is comparable in its basic structure and function to the previously explained embodiments. However, this device is designed for cutting a briquette strand with briquette rows, each of which has three briquettes 7 arranged next to one another. The hammer device 9 has three hammers 13 and the feed device 10 has two lugs 16, each hammer 13 being assigned to a briquette 7 of a briquette row 5a and each lug 16 being assigned to a material web 8b arranged between two adjacent briquettes 7. In this embodiment, too, the two lugs 16 are designed or oriented in such a way that a distance X is formed between these lugs 16, widening in the working direction R, over which distance the divided briquettes are discharged. An embodiment is shown in which the two lugs 16 are arranged in opposite

[0082]

[0083] directions, so that the widening distance X is formed. Consequently, in this embodiment, the advantages already mentioned in connection with the other embodiments are also achieved. Alternatively, however, it is also possible for the lugs 16 not to be completely inclined (or alternatively bent / curved in opposite directions), but rather each have an inner, inclined or curved guide surface, which can be realized, for example, by the lugs themselves having an uneven thickness and tapering in the transport direction or working direction.

[0084] As an alternative to the depicted oblique orientation of the noses, a bent or curved design of the noses is also possible. It is always important that the design and / or orientation of the noses (or at least one nose) creates the expanding space for the briquettes in the transport direction.

[0085] Furthermore, it can be seen in the figures that in all embodiments, the beaters 13 and the noses 16 are realized and arranged in such a way that at least one inner beater arranged between outer beaters can be guided between two adjacent noses and is consequently guided through during operation. For example, in the embodiment according to Figs. 3 and 5, it is ensured that the spaces between each two adjacent noses 16 are each traversed by one of the inner beaters 13 arranged between the two outer beaters 13. The two inner briquettes 7 of a briquette row 8b therefore do not simply fall through the space between the central nose and the respective outer nose 16, but are guided between the noses with the aid of the inner beaters 13. This improves and ensures the removal of the briquettes. The same applies to the embodiment according to Fig. 7, because there too

[0086] the two adjacent noses are passed through by a bat.

[0087] In the case of a briquette strand with briquette rows, each with three briquettes arranged next to one another, an embodiment with only two strikers and two noses would also be conceivable as an alternative to the embodiments according to the invention, wherein the two strikers would be assigned to the two outer briquettes and the two noses to the two material webs. In such an embodiment, the middle briquette would fall through between the two adjacent noses without a striker passing through the two adjacent noses and taking the middle briquette with it. Compared to such an embodiment with only two strikers, the embodiments according to the invention, in which particularly preferably two adjacent noses are passed through by one striker, ensure improved removal of the briquettes.

[0088] The beater wheel 11 is designed in a generally known manner as a rotor or beater rotor, specifically with the described beater rows 12, each with three or four beaters 13. Each individual beater 13 consists of a holder 13a or retaining projection formed on the beater wheel 11 and a striking plate 13b connected to the retaining projection 13a. The striking plates 13b are releasably attached to the retaining projections 13a, e.g., by screws, so that the striking plates 13b are replaceable as wearing parts. This is known from the prior art. Within the scope of the invention, the lugs 16 can also be replaceable as wearing parts.

[0089] It is also within the scope of the invention that the strikers 13 arranged in a row of strikers 12 and consequently also their strike plates 13b can have a different width. This makes it possible that

[0090] only three rackets 13, the middle racket 13 has a greater width or a smaller width than the two outer rackets 13.

[0091] The figures always show embodiments in which each briquette is assigned a striker 13 and each web 8b between two briquettes is assigned a nose 16. However, the invention also encompasses embodiments not shown in which, in addition to the briquettes shown in the figures, further briquettes, strikers or noses are provided which are designed in a modified embodiment and / or orientation. For example, additional regions can be provided in which a striker 13 is not directly assigned to a briquette, but a striker can also be assigned to a pair of briquettes, for example, in that the striker works jointly on two briquettes arranged next to one another and thus strikes the web or the separation point between two adjacent briquettes.In addition to the symmetrical arrangements of the device shown in the figures, additional strikers and / or additional noses can be provided in an asymmetrical form which are not designed in the manner described.

[0092] At least one nose is always provided, which is designed or oriented in such a way, e.g., angled, that the risk of jamming of the briquette associated with the nose is reduced. In general, the inventive concept can also be formulated as follows:

[0093] If (a) a briquette is assigned a striker and (b) the two webs for this briquette are each assigned a nose and if, in addition, one of these two conditions (a) or (b) does not apply to at least one briquette adjacent to the briquette, then the nose located on this side is formed and / or oriented in the manner according to the invention and consequently, for example,

[0094] tilted so that the risk of jamming for this briquette is reduced.

Claims

Patent claims:

1. A device (6) for dividing a briquette strand (5) comprising a plurality of connected briquette rows (5a) arranged one behind the other (in a longitudinal direction (L)), each of which comprises a plurality of briquette rows (7) connected by material webs (8a, 8b) next to one another, in particular for the production of briquettes (7) from directly reduced iron, comprising a movable hammer device (9) comprising a plurality of hammers (13) arranged next to one another, and a feed device (10) via which the briquette strand (5) can be fed to the hammer device (9) in a transport direction (T), wherein the hammer device (9) strikes the briquette strand (5) fed by the feed device (10) with the hammers (13) in such a way that, on the one hand, a row of briquettes (5a) is struck off the briquette strand (5) and, on the other hand, the row of briquettes (5a) is divided into the individual briquettes (7).wherein the feed device (10) has a striking edge (14) at its end for knocking off the briquette rows (5a) and, on or below the striking edge (14), lugs (16) for cutting the briquette rows (5a) into individual briquettes (7), characterized in that the striking device (9) and the feed device (10) are designed for cutting a briquette strand (5) with briquette rows (5a), each of which has at least three briquettes (7) arranged next to one another, that the beater device (9) has at least three beaters (13) arranged next to one another and the feed device (10) has at least two noses (16) arranged next to one another at a distance from one another and that of the plurality of noses (16) of the feed device (10) arranged next to one another, at least one of the noses (16) is designed and / or oriented in such a way that between this nose (16) and the nose (16) arranged next to it, a distance (X) is formed which widens in the working direction (R), via which distance the divided briquettes are discharged, 2. Device according to claim 1, characterized in that at least one of the noses (16) is obliquely oriented or curved and / or has a thickness tapering in the working direction (R).

3. Device according to claim 1 or 2, characterized in that at least two noses (16) arranged (directly) next to one another are each obliquely oriented or curved and / or have a thickness tapering in the working direction (R).

4. Device according to claim 2 or 3, characterized in that the number (n) of beaters (13) on the beater device (9) is one greater than the number (m) of noses (16) on the feed device (10), ie n = m + 1 , with n >

3.

5. Device according to one of claims 1 to 4, characterized in that the number (n) of beaters (13) on the beater device (9) is equal to the number (b) of briquettes (7) in the briquette rows (5a), ie n = b with b > 3, e.g. with b > 4, and / or that the number (m) of the noses (16) on the feed device (10) is one less than the number (b) of briquettes (7) in the briquette rows (5a), ie m = b - 1 with b > 3, e.g. with b > 4.

6. Device according to claim 5, characterized in that each material web (8b) between two adjacent briquettes (7) of a briquette row (5a) is assigned a nose (16).

7. Device according to one of claims 1 to 6, characterized in that the beater device (9) is designed as a rotatingly driven beater wheel (11) or has such a wheel, the beater wheel (11) having a plurality of beater rows (12) distributed over the circumference, each row having at least three beaters (13) arranged next to one another.

8. Device according to one of claims 1 to 7, characterized in that at least one inner striker (13) arranged between outer strikers (13) can be guided between two adjacent noses (16).

9. Device according to one of claims 1 to 8, characterized in that for cutting a briquette strand (5) with briquette rows (5a), each having three briquettes (7) arranged next to one another, the beater device (9) has three beaters (13) and the feed device (10) has two noses (16), each beater (13) being assigned to a briquette (7) of a briquette row (5a) and each nose (16) being assigned to a material web (8b) arranged between two adjacent briquettes (7).

10. Device according to one of claims 1 to 8, characterized in that for cutting a briquette strand (5) with briquette rows (5a), each having four briquettes (7) arranged next to one another, the beater device (9) has four beaters (13) and the feed device (10) has three noses (16), each beater (13) being assigned to a briquette (7) of a briquette row (5a) and each nose (16) being assigned to a material web (8b) arranged between two adjacent briquettes (7).

11. Device according to one of claims 2 to 10, characterized in that of the plurality of noses (16) of the feed device (10) arranged next to one another, e.g. of the three noses (16) arranged next to one another, the outer noses (16) are designed and / or oriented in such a way that a distance (X) widening in the working direction (R) is formed between the respective outer nose (16) and the inner nose (16) arranged next to it, via which distance the divided briquettes (7) are discharged.

12. Device according to claim 11, characterized in that the outer noses (16) are each oriented obliquely and / or have a thickness tapering in the working direction (R).

13. Device according to one of claims 1 to 12, characterized in that of the plurality of lugs (16) arranged next to one another, one or more lugs (16) is or are offset relative to one or more other lugs (16) in the working direction (R).

14. Device according to claim 13, characterized in that of e.g. three noses (16) arranged next to one another, an inner, e.g. central nose (16) is arranged downstream or upstream of the outer noses arranged next to it in the working direction (R).

15. Plant for producing briquettes, with at least one briquetting press (1), in particular a hot briquetting press, with which at least one briquette strand (5) can be produced continuously and with at least one device (6) according to one of claims 1 to 14 arranged downstream of the briquetting press (1) for cutting the briquette strand (5) emerging from the briquetting press (1).

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