EP1098155B1 - Process for operating a clinker cooler and clinker cooler - Google Patents

Process for operating a clinker cooler and clinker cooler Download PDF

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Publication number
EP1098155B1
EP1098155B1 EP19990121757 EP99121757A EP1098155B1 EP 1098155 B1 EP1098155 B1 EP 1098155B1 EP 19990121757 EP19990121757 EP 19990121757 EP 99121757 A EP99121757 A EP 99121757A EP 1098155 B1 EP1098155 B1 EP 1098155B1
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EP
European Patent Office
Prior art keywords
conveyor
characterised
grate
antechamber
cooler according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19990121757
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German (de)
French (fr)
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EP1098155A1 (en
Inventor
Klaus Klintworth
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Claudius Peters Technologies GmbH
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Claudius Peters Technologies GmbH
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Filing date
Publication date
Application filed by Claudius Peters Technologies GmbH filed Critical Claudius Peters Technologies GmbH
Priority to EP19990121757 priority Critical patent/EP1098155B1/en
Publication of EP1098155A1 publication Critical patent/EP1098155A1/en
Application granted granted Critical
Publication of EP1098155B1 publication Critical patent/EP1098155B1/en
Anticipated expiration legal-status Critical
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02Cooling
    • F27D15/0206Cooling with means to convey the charge
    • F27D15/0213Cooling with means to convey the charge comprising a cooling grate

Description

It is known to cool fired goods (e.g. cement clinker) by that a layer of the firing material is conveyed on a grate is driven while cooling air through the grate and the good layer becomes. In a known type of such a cooler (EP-B-676031; EP-A-718578), WO-A-8401616) becomes a stationary one Grate surface used over which the material bed means a conveyor is moved. This consists of a pair endless conveyor chains on both sides of the grate that between carriers that are located transversely to the direction of conveyance the goods lying between and above them in the direction of conveyance, i.e. in the longitudinal direction of the cooler. The drive bars are surrounded by hot material and are therefore subject to wear. This is especially true in the initial area of the cooler, where the hot, directly emerging from the kiln Chilled goods meet the carriers.

If the flow of the goods to be placed on the grate immediately strikes the conveyor grate and its driver high wear and high mechanical stress. Around To avoid this can be provided (EP-B-676031, EP-A-718578), that the kiln is first placed on a stationary surface, consisting of air-flowed grate plates, falls from who alone based the estate without additional funding an inclination of this surface at the beginning of the conveyor grate is moved to. A sufficient for pre-cooling the goods To give dwell time, the surface is only slightly inclined and it has a considerable length. This results in particular for problematic goods that can be baked and baked together tends to have problems for smooth cooler operation.

In another known cooler of the type just described Type (EP-A-726440) are the grate and the driver protected that a before the task of the goods to be cooled Layer of already chilled, from the end of the grate to the beginning returned goods is abandoned. The grate and the drivers through the cool layer of material that envelops them protected from the hot material layer above. The effort for the return of the chilled goods and the Conveying a doubled quantity of goods on the grate is high.

The invention has for its object the temperature stress and the wear of the conveyor grate in the initial area, especially on the drivers.

The solution according to the invention consists in the features of the claim 1 and preferably that of the subclaims.

Accordingly, it is provided that the driver one before the immediate Going through the influx of well-protected anteroom, which contains an intensely chilled embankment before they enter the task area. Once a driver has entered this vestibule, he pushes part of the material accumulated in it in the conveying direction. Other parts of the repressed good swell over it the direction of conveyance and gather behind it with new goods entering the embankment on the stationary Rust surface from where it is at rest exposed to the influence of the cooling air until the next carrier appears to take them with them. Then they are already at a lower temperature assumed that the driver only with pre-cooled goods in Touch comes. This shields him against the fresh, uncooled goods. This doesn't just apply as long as he is located in the anteroom in front of the dropping limit of the good, but even after that because it is in the lower to middle elevation range the good layer, which is mainly of pre-cooled Is well formed while the new, uncooled Well lay on top of the layer. By this simple measure provides effective protection the driver before the temperature stress due to uncooled Good and before the immediate impact. This also applies to the stationary grate surface.

In a device for feeding bulk material onto the conveyor belt a sintering plant (EP-A-359108) it is known that Pull the bed from a bed on the opposite side the conveying direction by a distance of wall lying on the conveyor belt is limited. In the field of formed between the conveyor belt and the lower edge of this wall Opening forms an embankment against the conveying direction, which in a way that is not easy to understand Segregation of the material to be sintered can be prevented should. This has nothing to do with the present invention.

It is known for traveling grates (US-A-4732561, DE-A-1953415, DE-B-1108606) by means of the feed area above the grate limit a chilled sloping surface that is at a distance ends above the grate. Any reference to the present There are no inventive ideas in it.

The shape of the anteroom is not critical, provided it is on the top is covered such that the conveyor grate in the area of the vestibule is not hit directly by the feed stream. However, it may be useful to limit the height of the embankment by the facilities that the feed stream on limit the opposite side of the conveying direction, form an edge from which the anteroom opens and from there the surface of the embankment is opposite the conveying direction is lowered towards the conveyor grate. It is it is generally advantageous if the height of the anteroom is dimensioned sufficiently to accommodate the embankment is. In other words, their height is at least about everywhere just as high as it starts from the edge mentioned Slope angle corresponds. For example, the upper limit of the anteroom from a direction opposite to the conveying direction sloping inclined surface. In some cases it is appropriate to lower the height of the vestibule a little than the height of the embankment, so that between the surface of the embankment and the upper boundary no space remains in the anteroom due to the cooling air can escape. This prevents the cooling air from to escape through the areas of the lowest height of the embankment. It can also be useful if the length of the anteroom, measured in the conveying direction of the grate, a little is shorter than the slope length, so not between the end of the embankment and the boundary of the anteroom A bulk-free area is created through which air can escape without cooling the firing material. This possibility can also be prevented in that the air permeability the grate area beyond the area covered by the Embankment is in any case taken, reduced or blocked becomes.

So that the length of the anteroom is sufficient, the good one for It is advisable to give pre-cooling a sufficient dwell time equal to the feed speed of the carriers, multiplied by the desired length of stay, whereby the latter at least in the order of 0.5 to 3 minutes. should be. At a feed speed of the carriers of 0.5 m / min. the vestibule has a length of 0.5 up to 1 m proven. The longitudinal distance of the The carrier is expediently of the same order of magnitude. It should be greater than 0.8 times the length of the anteroom.

To the cooler room and in particular the anteroom opposite the to adequately seal the surrounding atmosphere, it is advisable if the drivers in front of the anteroom are locked Pass through canal, the length of which is at least its distance like. The limitation of the flow rate is expedient from a sloping surface sloping in the conveying direction formed, which ends in the edge mentioned, from which the Vestibule and embankment run out.

The sloping sloping surface is expediently ventilated Rust plates equipped. In contrast to the above State of the art does not need to be so long that the conveyor grate is completely removed from the feed area is. It can therefore be short and corresponding in the conveying direction be steep, so that the behavior of the on Sloping surface of the goods is essentially unproblematic is. In addition, the inclined surface can be made movable around build-up and caking (so-called snowmen) can be easily solved. It is enough i.d.R. an intermittent movement. In particular, the Inclined surface can be swiveled around one of the edges mentioned near the axis his. The edge of the bevel on the swivel axis far end, should be as close as possible to the adjoin the adjacent wall. This wall is therefore useful curved in a circular arc, the center of curvature coincides with the swivel axis of the inclined surface. The wall curved in a circular arc is expedient formed by ventilated grate plates that are polygonal in an arc are approximately laid.

With a cooling grate that has a stationary grate surface and a conveyor chain arranged above it, it can happen that small particles of good through the openings or Columns of rust fall through. This so-called rust diarrhea must be removed from the grate subspace. To are e.g. separate drag chain conveyor used. According to the invention, the arrangement can thereby be simplified that the lower run of the in a closed Loop guided grate conveyor as a drag chain conveyor is used. It lies immediately for this purpose or at some distance on a stationary Conveying surface on which the rust diarrhea arrives and from which it travels through the grate conveyor is dissipated.

In further development of this inventive idea, the drag chain conveyor can continue until the beginning of the conveyor grate, by the the stationary conveyor surface of the drag chain conveyor forming wall in the area of the beginning of the conveyor provided deflection in contact with the conveyor until the material carried by it from the stationary grate surface or one located in the deflection area inside wall can be taken over the is continued from the stationary grate surface. The inside and outside wall that the conveyor at least on one include the length corresponding to the distance of the conveyor beams, form a seal for the rust subspace in relation to the sponsor. A suitable seal can also provided in the area of the other deflection of the conveyor his. After leaving the grate surface, the conveyor runs through in the area of its deflection a sealing channel between one on the inside to the grate surface and a wall outside wall, which in its further course with the the lower run of the conveyor forms the drag chain conveyor. The characteristics specified in this paragraph (according to claim 14 - 16) deserve protection regardless of the others Features of the invention.

The invention is explained in more detail below with reference to the drawing, which illustrates an advantageous embodiment. Show it:

Fig. 1
a schematic longitudinal section through the entire cooler,
Fig. 2
an enlarged view of the task area and
3 - 6
a partial representation of the task area with different designs of the anteroom.

The conveyor grate 1 is contained in a housing 2, the one Has feed chute 3, in which, for example, the discharge end of a rotary kiln ends. It also forms one Outlet shaft 4, which may contain a crusher 5. details the housing training and the cooling air supply and laxatives do not need to be explained because they are known.

The conveyor grate consists of a stationary grate part 6, the Top forms a stationary grate surface 7, and one Conveyor 8, which is a pair of pull chains on either side of the stationary Has grate part 6, the driver between them lead, in the example shown as so-called conveyor beams 9 are formed. The chains can be from wheels 10 be supported and led. The sponsor can also be in other Be fashioned, for example in the form of a or several screw conveyors. The decisive factor is that one A plurality of drivers is present in the conveying direction Have a distance from each other.

The stationary grate part 6 contains cooling air through openings for supplied via the pressurized grate subspace 14 Cooling air. The rust subspace can - as is known - in several chambers can be divided, which allow different Sections of the cooler with different cooling air pressure to act upon. There is also the possibility the cooling air to the elements that make up the stationary grate part 6 form, feed directly through hose or pipe connection. Details do not require explanation as they are known are.

In the example shown, the conveyor is closed Loop guided, its upper run above the stationary Grate surface 7 runs and its lower run 11 in the grate subspace is returned. In between there is a task side Deflection 12 and an outlet-side deflection. On their Details are given below.

The hot kiln is fed into the feed shaft 3 from the furnace outlet thrown and forms a total of those indicated by arrows 16 Feed stream, this term nothing about the Density of this current is supposed to say.

On the conveyor grate, a material bed 17 is formed, which on the stationary grate surface 7 rests and from the movement of the conveyor beams 9 is taken in the conveying direction 18. The conveyor beams 9 expediently have such a large height difference from the stationary grate surface 7 that in between a stationary or weakly moving, relatively cool Good layer forms, causing wear on the stationary Rust surface is reduced. This can also be done with facilities be provided that the emergence of such a stationary Good layer by creating a sliding resistance promote. For example, depressions in the grate surface, Pockets, cross ribs, etc. can be provided that directly hold onto or brake goods that interact with them. The distance between the drivers 9 and the grate surface 7 is expediently between 50 and 200 mm. The Bed height is in particular 400 to 1000 mm, the height of the Conveyor bar 100 to 250 mm.

In the rear area of the feed chute (in the direction of conveyance) 3, where heavy chunks are expected to hit must be above the conveyor grate in the conveying direction sloping inclined surface 20 is provided. she will formed by grate plates used for their own cooling and for cooling the goods on it with a cooling air connection are provided. The inclined surface 20 is around Axis 21 by means of a suitable drive, which at 22 as Hydraulic cylinder is indicated, pivotable. During the In operation, the inclined surface 20 is normally in a certain one Tilt position stationary. The drive 22 can do this serve to set different inclination angles. Especially it is intended for the inclined surface 20 from time to time swivel to throw off caking material induce or facilitate. For example, it can be intermittent at regular intervals in a swinging motion be relocated to the building of so-called snowmen submissions.

The wall part 23 located behind the inclined surface 20 (see FIG. 2) is the arc of movement of the trailing edge aligned the inclined surface 20 and also exists from ventilated grate plates.

The material falling on the inclined surface 20 slips from it gradually descended due to the slope, as a result of Exposure to cooling air undergoes intensive cooling. It then falls on the conveyor grate 1, in order for the Form bed 17. Part of the feed stream may also be immediate on the conveyor grate 1 or on the one located there Falling bed 17. However, these are smaller Pieces that the conveyor bar 9 does not hit when hitting strain, especially since they are largely protected by the material bed 17 are. Also, the one originating from the smaller particles Heat load is not so high because it cools down more quickly than the rough pieces. But only then do they reach the Conveying grate if it is already pre-cooled on the inclined surface 20 were.

Located under the front, lower end of the inclined surface 20 the antechamber 30 already mentioned, the underside of the Conveying grate is limited and is open to Gutbett 17 out. Its opening is through the leading edge 31 (Fig. 3) of the inclined surface 20 limited, which is also indicated by the dash-dotted line Vertical line 32 determines the limit up to which the conveyor grate can be hit directly by the feed stream, that from the falling from the stove and that from the Inclined surface 20 flowing down good.

Since the vestibule 30 is open to the good bed 17, this is urgent Well into it as a fill, under the slope angle, 3 u. 4 dash-dotted lines at 33 is. The height of the edge 31 therefore determines the size of the slope 33. The edge 31 should generally be a smaller one Height than the adjoining Gutbett 17. However there may be cases where this is not necessary is so that the surface (angle 33) of the embankment 34 is not from the Edge 31 goes out, but lies lower. It is understood that the so-called edge 31 is not designed to be sharp-edged needs to be.

The stationary grate part 6 is also located under the anteroom 30. It is also ventilated in the area of the anteroom 30, 3-6 schematically through channels 35 in the grate part 6 is indicated. The ventilated section of the stationary grate part 6 ends near the one in the rear (in the direction of conveyance) Boundary 36 of the vestibule 30 unventilated section continued in the form of a wall 37, which is convenient connects to the conveyor 8 without significant distance. In this area there is also above the conveyor 8 a wall 38 closely adjoining it. The conveyor 8 enclosing ones, from the opposing ones Walls 37, 38 formed channel has a length that is at least corresponds to the distance of the conveyor beams 9 in the conveying direction, so that there is always at least one bar 9 in it and the air outlet between the walls 37, 38 largely blocked. The facing surfaces of the walls 37, 38 therefore form together with that contained therein Bar 9 is a barrier against the escape or entry of air.

The bed 34 located in the vestibule 30 is an intensive one Exposed to cooling. This cooling is more intense than it outside the limit 32 in the area of the estate bed 17 would be because the amount of material exposed to the cooling air flow is smaller is. It can also be made special is intensively flowed through, for example, the cooling air flow effecting pressure difference is increased. This can the anteroom 30 above the embankment 34 with a special one Air vent 40 may be provided. The cooling is in the range of Embankment particularly effective because it is mainly is formed by smaller particles.

The slope material 34 located in the vestibule 30 is indeed intermittently through the conveyor beams 9 taken. While this is going through the anteroom move, but swells the material in front of and above them into the space that becomes free behind and is stored there on the stationary grate surface 7. Until the next conveyor beam appears, it has largely cooled down. Because he this good largely when it enters the free good bed 17 takes away and is enveloped by it, it remains there for the time being largely before the direct influence of the protected from hotter estates.

The anteroom should be long enough in the conveying direction to the goods in it are sufficient for pre-cooling Grant residence time. These are usually a few minutes. The rule that the length of the vestibule has proven itself corresponds to about half to twice the distance between the conveyor beams. The height of the edge 31 is expediently chosen so that the entire length of the vestibule 30 from the embankment 34 is taken. This is useful in view on economical use of space. It can also be avoided that cooling air through a free gap between the embankment and escapes the rear boundary 36 of the anteroom. Fig. 4 shows such an arrangement in which the length of the vestibule 30 is a little shorter than that of the embankment 34, so that the rear boundary 36 of the vestibule 30 cuts off the slope and thereby causes an air seal. The flow around the embankment can also be avoided in that the Transition 41 from the ventilated part of the grate 6 to the non-ventilated Part 37 is arranged so that it is within the The length of the slope 34 is as shown in FIG. 3.

Fig. 4 shows that the vestibule is not necessarily below an inclined surface 20 must be formed, but also formed, for example, in a vertical wall 42 can be. In this case, too, he is behind the Limit 32 of the immediate feed stream.

5, the top wall 43 of the Vestibule 30 arranged following the angle of repose 33 (FIG. 3), so that the vestibule is essentially completely from the embankment is filled. In contrast, the angle of the top wall 43 6 a little steeper than that slope angle 33 indicated by dash-dotted lines, see above that there is a guarantee that the fill is free of gaps connects to the wall 43. This causes that the cooling air entering the anteroom from below through the entire embankment, so that also cooling air flows reliably through the thicker part of the slope becomes. 6 also shows that the height of the material bed 17th not in all cases the height of the anteroom 30 Edge 31 needs to be reached.

In the deflection area 13, the stationary one Grate part 6 has a wall 50 lying on the inside of conveyor 8 on. This forms on a section that is at least the distance corresponds to two conveyor beams 9, with one accordingly outside 51 on the conveyor Tight channel. The wall 51 also settles in the area 52 of the lower one Runs the conveyor away, with the conveyor beams on of the surface formed by the wall 52 lie or small Distance from this. This causes the conveyor forms a drag chain conveyor with the wall 52, is removed by the possible rust diarrhea.

So that the rust diarrhea is fed back to the top bed the wall 52 settles in the area of the deflection 12 continues as wall 53. Once the incline of the conveyor 8 in this deflection 12 begins to approach the vertical direction, will also be on the inside of the conveyor for one Limitation provided in the case shown by a deflection roller 54 is formed, but also formed by a wall can be, which corresponds to the wall 50 in the deflection 13. So becomes the rust diarrhea carried by the conveyor on the top of the stationary grate part 6 listed and arrives at easiest way back into the product stream.

Claims (18)

  1. A method of operating a cooler for combustion material, with at least one conveyor grate (1) for conveying a bed (17) of the material to be cooled and through which cooling air flows, which has a feed zone for feeding the material to be cooled and is formed by a stationary grate surface (7) and a conveyor (8) which comprises a plurality of carrier members (9) moved at a mutual distance apart over the grate surface (7) in the conveying direction (18), and upstream of the inlet into the feed zone passes through an antechamber (30), characterised in that the antechamber (30) is in communication with the feed zone via an opening (32) extending downwards as far as the conveyor (8) so that material to be cooled flows from the feed zone into the antechamber (30) counter to the conveying direction of the conveyor (8) and here forms a slope (34) which envelopes the carrier members (9) and is intensively cooled.
  2. A method according to Claim 1, characterised in that the length of the antechamber (30) is the same as the feed rate of the conveyor (8) multiplied by 0.5 to 3 min.
  3. A cooler for combustion material for carrying out the method according to Claim 1, with a conveyor grate (1) for conveying a bed of the material to be cooled and through which cooling air flows, which has a feed zone for feeding the material to be cooled and is formed by a stationary grate surface (7) and a conveyor (8) which comprises a plurality of carrier members (9) moved at a mutual distance apart over the grate surface (7) in the conveying direction (18), and upstream of the inlet into the feed zone passes through an antechamber (30), characterised in that the antechamber (30) is in communication with the feed zone via an opening (32) extending downwards as far as the conveyor (8) so that material to be cooled can flow from the feed zone into the antechamber (30) counter to the conveying direction of the conveyor (8) and at this location can form a slope (34) which envelopes the carrier members (9), which slope (34) is intensively cooled from the stationary grate surface (7).
  4. A cooler according to Claim 3, characterised in that the opening (32) has an upper edge (31) to limit the flow of material to be cooled into the antechamber (30), which flow is directed counter to the conveying direction of the conveyor (8).
  5. A cooler according to Claim 3 or 4, characterised in that the height of the antechamber (30) is calculated to be substantially adequate to accommodate the slope (34).
  6. A cooler according to any one of Claims 3 to 5, characterised in that the length of the antechamber (30) is slightly shorter than the length of the slope.
  7. A cooler according to any one of Claims 3 to 5, characterised in that the length of the antechamber (30) is equal to the feed rate of the conveyor (8), multiplied by 0.5 to 3 min.
  8. A cooler according to any one of Claims 3 to 7, characterised in that the distance apart of the carrier members (9) is greater than 0.8 times the length of the antechamber (39) [sic].
  9. A cooler according to any one of Claims 3 to 8, characterised in that upstream of the antechamber (30) the carrier means (9) pass through a fluidtight passage, the length of which is at least equal to their distance apart.
  10. A cooler according to any one of Claims 4 to 9, characterised in that the edge (31) is formed by an inclined surface (20) sloping downwards in conveying direction.
  11. A cooler according to Claim 10, characterised in that the inclined surface (20) is formed by ventilated grate plates.
  12. A cooler according to Claim 10 or 11, characterised in that the inclined surface (20) is intermittently movable.
  13. A cooler according to Claim 12, characterised in that the inclined surface (20) is pivotable about an axis (21) close to the edge (31).
  14. A cooler according to Claim 13, characterised in that a wall (23) curved in a circular arc is closely adjacent the end of the inclined surface (20) remote from the pivot axis (21), the axis of curvature of which wall is the pivot axis (21).
  15. A cooler according to Claim 14, characterised in that the wall (23) curved in a circular arc is formed by ventilated grate plates which are disposed polygonally approximately in a circular arc.
  16. A cooler according to any one of Claims 3 to 15, characterised in that the lower strand side (11) of the conveyor (8) forms a drag-chain conveyor.
  17. A cooler according to Claim 16, characterised in that the drag-chain conveyor (11) extends up to the start of the conveyor grate (1).
  18. A cooler according to Claim 16 or 17, characterised in that, after leaving the grate surface (7) in the vicinity of its deflection (13), the conveyor (18) passes through a fluidtight passage between a wall (50) inwardly adjacent the grate surface and an outside wall (51) which in its further extension (52) forms with the lower strand side (11) the drag-chain conveyor.
EP19990121757 1999-11-03 1999-11-03 Process for operating a clinker cooler and clinker cooler Expired - Lifetime EP1098155B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19990121757 EP1098155B1 (en) 1999-11-03 1999-11-03 Process for operating a clinker cooler and clinker cooler

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP19990121757 EP1098155B1 (en) 1999-11-03 1999-11-03 Process for operating a clinker cooler and clinker cooler
AT99121757T AT278924T (en) 1999-11-03 1999-11-03 Method for operating a combustion cooler and combustion cooler
DE1999510759 DE59910759D1 (en) 1999-11-03 1999-11-03 Process for operating a kiln cooler and kiln cooler
US09/703,555 US6312252B1 (en) 1999-11-03 2000-11-01 Cooler for combustion products
JP2000334671A JP2001208484A (en) 1999-11-03 2000-11-01 Cooler for burned product material

Publications (2)

Publication Number Publication Date
EP1098155A1 EP1098155A1 (en) 2001-05-09
EP1098155B1 true EP1098155B1 (en) 2004-10-06

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EP19990121757 Expired - Lifetime EP1098155B1 (en) 1999-11-03 1999-11-03 Process for operating a clinker cooler and clinker cooler

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US (1) US6312252B1 (en)
EP (1) EP1098155B1 (en)
JP (1) JP2001208484A (en)
AT (1) AT278924T (en)
DE (1) DE59910759D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5866196B2 (en) 2011-12-26 2016-02-17 川崎重工業株式会社 Bulk material cooling apparatus and bulk material cooling method
KR101325288B1 (en) * 2012-07-11 2013-11-05 주식회사 포스코 Apparatus for improving the permeability of sintering bed

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108606B (en) * 1959-05-06 1961-06-08 Polysius Gmbh Guide to passing over burnt material, particularly cement clinker, from a furnace, for example. B. rotary kiln, a movable Rostkuehler
DE1160354B (en) * 1960-12-01 1963-12-27 Knapsack Ag A device for transfer of material for sintering of a sintered grid on a Kuehlrost
US3089688A (en) * 1961-03-06 1963-05-14 Dundee Cement Co Cement manufacture
DE1953415C3 (en) * 1969-10-23 1974-10-17 Polysius Ag, 4723 Neubeckum
DE3131514C1 (en) * 1981-08-08 1988-09-08 Wedel Karl Von Dipl Ing Dipl W Method for cooling refrigerated goods beds and stowing device for carrying out the method
DE3238872A1 (en) * 1982-10-18 1984-04-19 Wedel Karl Von Dipl Ing Dipl W Method for cooling protective materials like cement clinker and device for carrying out the method
US4503783A (en) * 1983-07-11 1985-03-12 General Kinematics Corporation Furnace ash air seal
DE3538059A1 (en) * 1985-10-25 1987-04-30 Krupp Polysius Ag Device for cooling hot goods
DE3616630A1 (en) * 1986-05-16 1987-11-19 Krupp Polysius Ag Cooling device
AU612058B2 (en) * 1988-09-13 1991-06-27 Nkk Corporation Apparatus for charging material to be sintered into a sintering machine
DK154692D0 (en) 1992-12-23 1992-12-23 Smidth & Co As F L Procedure and cooler for cooling particulated material
DE19504311A1 (en) * 1995-02-09 1996-08-14 Krupp Polysius Ag Two-layer cooler
JPH08261420A (en) * 1995-03-27 1996-10-11 Shigeru Saito Gravel bed furnace

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Publication number Publication date
US6312252B1 (en) 2001-11-06
JP2001208484A (en) 2001-08-03
AT278924T (en) 2004-10-15
EP1098155A1 (en) 2001-05-09
DE59910759D1 (en) 2004-11-11

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