CA2278620C - Device for the controlled cooling of hot-briquetted directly reduced iron sponge - Google Patents
Device for the controlled cooling of hot-briquetted directly reduced iron sponge Download PDFInfo
- Publication number
- CA2278620C CA2278620C CA002278620A CA2278620A CA2278620C CA 2278620 C CA2278620 C CA 2278620C CA 002278620 A CA002278620 A CA 002278620A CA 2278620 A CA2278620 A CA 2278620A CA 2278620 C CA2278620 C CA 2278620C
- Authority
- CA
- Canada
- Prior art keywords
- conveyor
- sliding plate
- arrangement
- chain
- plates
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Chain Conveyers (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
In an arrangement for the controlled cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, the individual plate is designed as a conveyer trough, wherein at least one sliding plate each is located on the two opposed longitudinal outsides and the conveyor troughs are movably supported by means of the sliding plates on slideways and connected by means of at least one chain. The invention allows to separate the drive and the bearing as the conveyor troughs are supported by means of sliding plates and the drive acts directly on the conveyor trough by means of at least one chain. As the translation elements are designed as sliding plates and slideways, the surface pressure is reduced to less than a hundredth compared to wheels running on rails and the wear of the translation elements is thus reduced.
Description
DEVICE FOR THE CONTROLLED COOLINO OF HOT-BRTOUETTED
DIRECTLY REDUCED IRON SPONGE
The invention relates to an arrangement for the controlied cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor located in a tank.
An arrangement for cooling is known from the German patent specification DE 29 G2. This an-angernent is comprised of a quench tank and a conveyor placed therein in inclined position for transporting connected briquettes.
In the different prbcesses for the direct reduction of iron, solid oxidiic=input material is reduced to iron by_ means of reduction gases. The pellets or lump'ores formed thereby can only be storedunder special protective conditions as due to the microporosity of the products an exothermal reaction with atmospheric oxygen rriay occur.
Therefore, a hot-briquetting plant has been connected downstream of several processes in order to compact the reduced material and, thus, to reduce the risk of reoxidation due to the surface which is reduced thereby_ Tlie briquettes forrned during hot briquetting have a temperature of approx.
750 C and are cooled.Xo approx. 5O C in order to prevent self-ignition. However, the.ener.gy stored in the cooled briquettes must still suffice to dry them up.
Cooling is perforrrked in a quench tank, i.e. a tank filled with water, in which wire mesh belt conveyors or apron conveyors are located onto which the hot briquettes drop. The apron conveyors consist of perforated plates connected to one -another, to which wheels running on rails are mounted by means of pins. The plates are connected to one another by fishplate bush links. The conveyors are driven by a conveyor chain connected with the wheel axles.
The fines accompenyiilg the briquettes get onto the bottom of the tank as well as onto the rails through ttme holes in the plates. Combined with aggressive substances in water, with the high surface pressure acting on the supporting -surfaces of the wheels at-.the rails and with the r,adial stresses occurring, primarily the wheels and pins are highly v-rorrm.
As the.,_!hO_ejs rura dry in_ front of the point of briquette discharge, the afdrernentioned conditions are agQravated by the alternation of wet and dry condition.
DIRECTLY REDUCED IRON SPONGE
The invention relates to an arrangement for the controlied cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor located in a tank.
An arrangement for cooling is known from the German patent specification DE 29 G2. This an-angernent is comprised of a quench tank and a conveyor placed therein in inclined position for transporting connected briquettes.
In the different prbcesses for the direct reduction of iron, solid oxidiic=input material is reduced to iron by_ means of reduction gases. The pellets or lump'ores formed thereby can only be storedunder special protective conditions as due to the microporosity of the products an exothermal reaction with atmospheric oxygen rriay occur.
Therefore, a hot-briquetting plant has been connected downstream of several processes in order to compact the reduced material and, thus, to reduce the risk of reoxidation due to the surface which is reduced thereby_ Tlie briquettes forrned during hot briquetting have a temperature of approx.
750 C and are cooled.Xo approx. 5O C in order to prevent self-ignition. However, the.ener.gy stored in the cooled briquettes must still suffice to dry them up.
Cooling is perforrrked in a quench tank, i.e. a tank filled with water, in which wire mesh belt conveyors or apron conveyors are located onto which the hot briquettes drop. The apron conveyors consist of perforated plates connected to one -another, to which wheels running on rails are mounted by means of pins. The plates are connected to one another by fishplate bush links. The conveyors are driven by a conveyor chain connected with the wheel axles.
The fines accompenyiilg the briquettes get onto the bottom of the tank as well as onto the rails through ttme holes in the plates. Combined with aggressive substances in water, with the high surface pressure acting on the supporting -surfaces of the wheels at-.the rails and with the r,adial stresses occurring, primarily the wheels and pins are highly v-rorrm.
As the.,_!hO_ejs rura dry in_ front of the point of briquette discharge, the afdrernentioned conditions are agQravated by the alternation of wet and dry condition.
The object of the invention is to develop a cooling system to reduce the wear of the conveyor elements and thus to increase the availability of the cooling system due to the lower maintenance expenditure. The design of the plates and of the drive is to be modified so that less fines penetrate into highly stressed areas.
Accordingly, there is provided an arrangement for the controlled cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, characterized in that the individual plates are designed as conveyor troughs, wherein at least one sliding plate is located on two opposed longitudinal outsides and the conveyor troughs are movably supported on slideways by means of the at least one sliding plate and connected by means of at least one chain.
A novelty of this invention is that the drive and the bearing can be separated as the conveyor troughs are supported by means of sliding plates and the drive acts directly on or trough by means of at least one chain.
As the translation elements are designed as sliding plates and slideways, the surface pressure is reduced to less than one hundredth compared to wheels running on rails. As a result, the wear of the translation elements is reduced. The sliding plates cover the slideways partly from the material flow so that less fines get directly onto the slideways and wear is further reduced.
Another feature of the invention is that one mounting plate each is located on the two opposed longitudinal outsides of the conveyor trough, to which mounting plate one sliding plate each is fixed on its upper and lower sides. This type of mounting of the sliding plates on the conveyor trough enables the sliding plates to be easily exchanged if they are worn.
Another feature of the invention is that, if two sliding plates are placed on each longitudinal outside and at each conveyor trough, the upper sliding plate-seen in the direction of conveying-is thinner than the lower sliding plate. This feature takes into account that the lower sliding plate is subject to higher wear due to the loading of the conveyor trough and the direct action of fine material and the upper and lower sliding plates can thus be simultaneously exchanged, which results in increased plant availability.
Another feature of the invention is that the individual conveyor trough is driven by means of at least one chain, preferably a round steel chain, a detachable connection being established between the conveyor trough and the chain.
Driving by means of chains has the advantage that guidance of the conveyor troughs is ensured by prestressing the chain. The detachable connection between the conveyor trough and the chains facilitates plant maintenance.
The invention is further characterized in that the individual conveyor trough is driven by means of at least one chain, preferably a round steel chain, which is provided with plugin pushers detachably connected with fishplates located on the bottom side of each conveyor trough. The fishplate arrangement on the bottom side of the conveyor trough has the advantage that the latter protects the chains engaging there from the direct action of sponge iron briquettes or fine material.
Moreover, the use of round steel chains is advantageous as these are self-cleaning.
Another feature of the invention is that the conveyor troughs are made of brace plates, which reduces the probability of deformation of the conveyor troughs by impact on the side stop.
The feature of one side stop being placed on both sides of the conveyor troughs serves for emergency guidance of the conveyor troughs in case of a sideward motion resulting from loading the conveyor trough, on the one hand, and for protecting the tank, on the other hand, because the side stop prevents the conveyor trough from damaging the tank wall.
An advantageous feature of the invention is that the horizontal distance between the upper sliding plate and the side stop amounts to maximally half the average diameter of the sponge iron briquettes. This is to prevent the sponge iron briquettes from dropping between the sliding plate and side stop, from getting jammed there and locking the conveyor troughs, or from causing increased wear.
Accordingly, there is provided an arrangement for the controlled cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, characterized in that the individual plates are designed as conveyor troughs, wherein at least one sliding plate is located on two opposed longitudinal outsides and the conveyor troughs are movably supported on slideways by means of the at least one sliding plate and connected by means of at least one chain.
A novelty of this invention is that the drive and the bearing can be separated as the conveyor troughs are supported by means of sliding plates and the drive acts directly on or trough by means of at least one chain.
As the translation elements are designed as sliding plates and slideways, the surface pressure is reduced to less than one hundredth compared to wheels running on rails. As a result, the wear of the translation elements is reduced. The sliding plates cover the slideways partly from the material flow so that less fines get directly onto the slideways and wear is further reduced.
Another feature of the invention is that one mounting plate each is located on the two opposed longitudinal outsides of the conveyor trough, to which mounting plate one sliding plate each is fixed on its upper and lower sides. This type of mounting of the sliding plates on the conveyor trough enables the sliding plates to be easily exchanged if they are worn.
Another feature of the invention is that, if two sliding plates are placed on each longitudinal outside and at each conveyor trough, the upper sliding plate-seen in the direction of conveying-is thinner than the lower sliding plate. This feature takes into account that the lower sliding plate is subject to higher wear due to the loading of the conveyor trough and the direct action of fine material and the upper and lower sliding plates can thus be simultaneously exchanged, which results in increased plant availability.
Another feature of the invention is that the individual conveyor trough is driven by means of at least one chain, preferably a round steel chain, a detachable connection being established between the conveyor trough and the chain.
Driving by means of chains has the advantage that guidance of the conveyor troughs is ensured by prestressing the chain. The detachable connection between the conveyor trough and the chains facilitates plant maintenance.
The invention is further characterized in that the individual conveyor trough is driven by means of at least one chain, preferably a round steel chain, which is provided with plugin pushers detachably connected with fishplates located on the bottom side of each conveyor trough. The fishplate arrangement on the bottom side of the conveyor trough has the advantage that the latter protects the chains engaging there from the direct action of sponge iron briquettes or fine material.
Moreover, the use of round steel chains is advantageous as these are self-cleaning.
Another feature of the invention is that the conveyor troughs are made of brace plates, which reduces the probability of deformation of the conveyor troughs by impact on the side stop.
The feature of one side stop being placed on both sides of the conveyor troughs serves for emergency guidance of the conveyor troughs in case of a sideward motion resulting from loading the conveyor trough, on the one hand, and for protecting the tank, on the other hand, because the side stop prevents the conveyor trough from damaging the tank wall.
An advantageous feature of the invention is that the horizontal distance between the upper sliding plate and the side stop amounts to maximally half the average diameter of the sponge iron briquettes. This is to prevent the sponge iron briquettes from dropping between the sliding plate and side stop, from getting jammed there and locking the conveyor troughs, or from causing increased wear.
The last feature of the invention is that in the area of the slideways that is located above water level a spraying device is placed, which ensures uniform sliding conditions for the sliding plates and rinses deposits of fine material from the slideways into the tank.
The invention is to be explained by an embodiment. The enclosed Figs. 1 to 3 display a schematic representation of this embodiment.
Fig. 1 shows a vertical section through the tank in which the apron conveyor is located.
Fig. 2 shows a detail of the apron conveyor according to Fig. 1.
Fig. 3 shows a section through A-A in Fig. 2.
Fig. 1 shows apron conveyor 1 located in tank 2 filled with water, arranged together with drag conveyor 3, which is not described in detail here. Hot sponge iron is charged onto apron conveyor 1 in the area of the left deflection of apron conveyor 1 where the latter is located below water level, conveyed further to the right according to the arrow while being cooled in water and discharged at the right end of tank 2. Drag conveyor 3 only serves to discharge the fine material settled on the bottom of tank 2.
Fig. 2 shows the left part of apron conveyor 1 according to Fig. 1 with the deflection device for conveyor troughs 4. The individual plates of apron conveyor 1 are designed as conveyor troughs 4. The latter are preferably made of folded steel plate, in particular of so-called brace plates, which are resistant to radial stresses. The moving direction of the conveyor troughs is marked by the arrow. Conveyor trou,ghs 4 are fixed to chains 9 by which driving is performed. Furthermore, rolled section beams 8 are shown on which slideways 7 are mounted.
Fig. 3 shows a section through A-A in Fig. 2. Conveyor trough 4 shown on the top moves in conveying direction, and lower conveyor trough 4 in opposite direction. The side walls of conveyor troughs 4 are higher than the front and rear walls. On the two opposed longitudinal outsides of conveyor troughs 4 forming the two outsides of apron conveyor 1 two sliding plates 5, 6 each made of wear steel are mounted. The two sliding plates 5, 6 of one side are arranged one above the other so that lower sliding plates 5 are in operation while conveyor trough 4 is moving in conveying direction and sliding plates 6, which are located on top in conveying direction, are in operation while conveyor trough 4 GwcrVnn EwwElOw00]ETMi+fw)39IpOC
is moving in the opposite direction. One sliding plate 5, 6 each is fixed to mounting plate which is permanently connected to conveyor trough 4.
Conveyor troughs 4 are moved by means of sliding plates 5, 6 on wear-resistant slideways 7 which are mounted on rolled section beams 8. Slideways 7 serve as a sliding basis for sliding plates 5, 6 and, together with rolled section beams 8, absorb the longitudinal forces and radial stresses resulting from belt movement.
Conveyor troughs 4 are driven through chains 9 provided with wear-resistant plug-in pushers. On the bottom side of each trough conveyor 4 fishplates 12 are arranged in a way that the pushers of chain 9 engage with the latter. The plug-in pushers are secured with clamping sleeves. The connection between chain 9 and conveyor trough 4 is detachable. The tensile forces are transmitted to conveyor troughs 4 through chains 9, conveyor troughs 4 not being connected to one another. Conveyor troughs 4 thus do not have to absorb any tensile forces of the chains. The prestress of chain 9 supports guidance of conveyor troughs 4.
Chains 9 are preferably designed as round steel chains. They are guided between slideways 8 beneath conveyor troughs 4 and largely protected by the latter from being contaminated.
Side stop 11 is placed on both sides of conveyor troughs 4. Due to the sponge iron load, conveyor troughs 4 may receive a short-time pulse which is largely directed sidewards, which is caught by the side stop so that the wall of tank 2 is also protected.
For those parts of slideways 7 which are located above water level, a spraying device is provided to ensure that slideways 7 have the same sliding conditions at all points.
Gsw<rM n 6 w+.E~wo0161wTn*wi7561 DOC
The invention is to be explained by an embodiment. The enclosed Figs. 1 to 3 display a schematic representation of this embodiment.
Fig. 1 shows a vertical section through the tank in which the apron conveyor is located.
Fig. 2 shows a detail of the apron conveyor according to Fig. 1.
Fig. 3 shows a section through A-A in Fig. 2.
Fig. 1 shows apron conveyor 1 located in tank 2 filled with water, arranged together with drag conveyor 3, which is not described in detail here. Hot sponge iron is charged onto apron conveyor 1 in the area of the left deflection of apron conveyor 1 where the latter is located below water level, conveyed further to the right according to the arrow while being cooled in water and discharged at the right end of tank 2. Drag conveyor 3 only serves to discharge the fine material settled on the bottom of tank 2.
Fig. 2 shows the left part of apron conveyor 1 according to Fig. 1 with the deflection device for conveyor troughs 4. The individual plates of apron conveyor 1 are designed as conveyor troughs 4. The latter are preferably made of folded steel plate, in particular of so-called brace plates, which are resistant to radial stresses. The moving direction of the conveyor troughs is marked by the arrow. Conveyor trou,ghs 4 are fixed to chains 9 by which driving is performed. Furthermore, rolled section beams 8 are shown on which slideways 7 are mounted.
Fig. 3 shows a section through A-A in Fig. 2. Conveyor trough 4 shown on the top moves in conveying direction, and lower conveyor trough 4 in opposite direction. The side walls of conveyor troughs 4 are higher than the front and rear walls. On the two opposed longitudinal outsides of conveyor troughs 4 forming the two outsides of apron conveyor 1 two sliding plates 5, 6 each made of wear steel are mounted. The two sliding plates 5, 6 of one side are arranged one above the other so that lower sliding plates 5 are in operation while conveyor trough 4 is moving in conveying direction and sliding plates 6, which are located on top in conveying direction, are in operation while conveyor trough 4 GwcrVnn EwwElOw00]ETMi+fw)39IpOC
is moving in the opposite direction. One sliding plate 5, 6 each is fixed to mounting plate which is permanently connected to conveyor trough 4.
Conveyor troughs 4 are moved by means of sliding plates 5, 6 on wear-resistant slideways 7 which are mounted on rolled section beams 8. Slideways 7 serve as a sliding basis for sliding plates 5, 6 and, together with rolled section beams 8, absorb the longitudinal forces and radial stresses resulting from belt movement.
Conveyor troughs 4 are driven through chains 9 provided with wear-resistant plug-in pushers. On the bottom side of each trough conveyor 4 fishplates 12 are arranged in a way that the pushers of chain 9 engage with the latter. The plug-in pushers are secured with clamping sleeves. The connection between chain 9 and conveyor trough 4 is detachable. The tensile forces are transmitted to conveyor troughs 4 through chains 9, conveyor troughs 4 not being connected to one another. Conveyor troughs 4 thus do not have to absorb any tensile forces of the chains. The prestress of chain 9 supports guidance of conveyor troughs 4.
Chains 9 are preferably designed as round steel chains. They are guided between slideways 8 beneath conveyor troughs 4 and largely protected by the latter from being contaminated.
Side stop 11 is placed on both sides of conveyor troughs 4. Due to the sponge iron load, conveyor troughs 4 may receive a short-time pulse which is largely directed sidewards, which is caught by the side stop so that the wall of tank 2 is also protected.
For those parts of slideways 7 which are located above water level, a spraying device is provided to ensure that slideways 7 have the same sliding conditions at all points.
Gsw<rM n 6 w+.E~wo0161wTn*wi7561 DOC
Claims (10)
1. Arrangement for the controlled cooling of hot-briquetted direct-reduced sponge iron in the form of an apron conveyor consisting of individual plates and located in a tank, characterized in that the individual plates are designed as conveyor troughs, wherein at least one sliding plate is located on two opposed longitudinal outsides and the conveyor troughs are movably supported on slideways by means of the at least one sliding plate and connected by means of at least one chain.
2. Arrangement according to claim 1, characterized in that each longitudinal outside has one mounting plate, the at least one sliding plate including two sliding plates, one being an upper sliding plate and the other being a lower sliding plate connected to the mounting plate.
3. Arrangement according to claim 1, characterized in that the at least one sliding plate includes two sliding plates, one being an upper sliding plate and the other being a lower sliding plate, the two sliding plates being located on each longitudinal outside and at each conveyor trough, the upper sliding plate being thinner than the lower sliding plate.
4. Arrangement as claimed in claim 2 or 3, characterized in that each conveyor trough is driven by means of the at least one chain and that a detachable connection is provided between each conveyor trough and the at least one chain.
5. Arrangement as claimed in claim 2 or 3, characterized in that that each conveyor trough is driven by means of the at least one chain and is provided with plug-in pushers, the plug-in pushers being detachably connected with fishplates located on a bottom side of each conveyor trough.
6. Arrangement as claimed in any one of claims 2 to 5, characterized in that the conveyor troughs comprise brace plates.
7. Arrangement as claimed in any one of claims 2 to 6, characterized in that it comprises side stops located on both sides of the conveyor troughs.
8. Arrangement as claimed in claim 7, characterized in that the upper sliding plate and the side stop are separated by a horizontal distance which amounts to maximally half an average diameter of the sponge iron briquettes.
9. Arrangement as claimed in any one of claims 1 to 8, characterized in that a spraying device is located in an area of the slideways that is located above a water level of the tank.
10. Arrangement as claimed in any one of claims 1 to 9, characterized in that the at least one chain is a round steel chain.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0012597A AT405943B (en) | 1997-01-29 | 1997-01-29 | DEVICE FOR THE CONTROLLED COOLING OF HOT BRIQUETTED DIRECTLY REDUCED IRON SPONGE |
| ATA125/97 | 1997-01-29 | ||
| PCT/AT1998/000014 WO1998033943A2 (en) | 1997-01-29 | 1998-01-27 | Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2278620A1 CA2278620A1 (en) | 1998-08-06 |
| CA2278620C true CA2278620C (en) | 2008-03-11 |
Family
ID=3482176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002278620A Expired - Fee Related CA2278620C (en) | 1997-01-29 | 1998-01-27 | Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JP4202427B2 (en) |
| AR (1) | AR010881A1 (en) |
| AT (1) | AT405943B (en) |
| AU (1) | AU731372B2 (en) |
| BR (1) | BR9807029A (en) |
| CA (1) | CA2278620C (en) |
| DE (1) | DE19803431C2 (en) |
| ID (1) | ID21905A (en) |
| MY (1) | MY120018A (en) |
| WO (1) | WO1998033943A2 (en) |
| ZA (1) | ZA98652B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126606B (en) * | 2010-12-27 | 2012-12-05 | 江苏天奇物流系统工程股份有限公司 | Split charging line for engine |
| EP3006356A1 (en) * | 2014-10-09 | 2016-04-13 | Nazzareno Mondini | Highly sanitable versatile container conveyor equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964127C (en) * | 1953-12-12 | 1957-05-16 | Herbert Knaust Dr Ing | Steep conveyor |
| DE1194319B (en) * | 1958-09-23 | 1965-06-03 | Gewerk Eisenhuette Westfalia | Curved conveyor with an endless conveyor belt |
| FR1364451A (en) * | 1963-07-25 | 1964-06-19 | Georg Willy A G | Conveyor device including bricks |
| CH621746A5 (en) * | 1977-05-13 | 1981-02-27 | Mueller Ernst Ag | Belt conveyor |
| ZA786373B (en) * | 1977-11-22 | 1979-10-31 | Umec Boydell Ltd | Improvements relating to belt conveyors |
| BR7904193A (en) * | 1978-07-03 | 1980-03-25 | Amsted Siemag Kette Gmbh | PLATE CONTAINER WITH MOBILITY ON CURVES |
| US4165978A (en) * | 1978-07-14 | 1979-08-28 | Midrex Corporation | Briquet sheet breaking by cooling and bending |
| SE428201B (en) * | 1980-02-14 | 1983-06-13 | Skf Ab | TRANSPORTER INCLUDING A NUMBER IN AN ENDLESS BAND AFTER EACH JOINED BODIES PROVIDED TO BE PROVIDED AND MANAGED |
| IT8130780V0 (en) * | 1981-10-23 | 1981-10-23 | Facco Impianti Avicoli Srl | SUPPORT STRUCTURE FOR CONVEYOR BELTS. |
| US4582193A (en) * | 1982-06-23 | 1986-04-15 | Bivans Corporation | Flight attached to a drive mechanism |
| ATE20029T1 (en) * | 1982-10-13 | 1986-06-15 | Rovema Gmbh | CONVEYOR BELT, PARTICULARLY FOR USE IN PACKAGING EQUIPMENT. |
| US6223552B1 (en) * | 1997-01-29 | 2001-05-01 | Voest-Alpine Industrieanlagenbau Gmbh | Device for the controlled cooling of hot-briquetted directly reduced iron sponge |
-
1997
- 1997-01-29 AT AT0012597A patent/AT405943B/en not_active IP Right Cessation
-
1998
- 1998-01-23 MY MYPI98000313A patent/MY120018A/en unknown
- 1998-01-27 ZA ZA98652A patent/ZA98652B/en unknown
- 1998-01-27 JP JP53238098A patent/JP4202427B2/en not_active Expired - Fee Related
- 1998-01-27 ID IDW990627A patent/ID21905A/en unknown
- 1998-01-27 CA CA002278620A patent/CA2278620C/en not_active Expired - Fee Related
- 1998-01-27 WO PCT/AT1998/000014 patent/WO1998033943A2/en active IP Right Grant
- 1998-01-27 AU AU57403/98A patent/AU731372B2/en not_active Expired
- 1998-01-27 BR BR9807029-0A patent/BR9807029A/en not_active IP Right Cessation
- 1998-01-28 AR ARP980100370A patent/AR010881A1/en active IP Right Grant
- 1998-01-29 DE DE19803431A patent/DE19803431C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998033943A3 (en) | 1998-12-10 |
| ID21905A (en) | 1999-08-12 |
| CA2278620A1 (en) | 1998-08-06 |
| JP4202427B2 (en) | 2008-12-24 |
| BR9807029A (en) | 2000-03-14 |
| JP2001509212A (en) | 2001-07-10 |
| AU5740398A (en) | 1998-08-25 |
| DE19803431A1 (en) | 1998-07-30 |
| ZA98652B (en) | 1998-08-17 |
| ATA12597A (en) | 1999-05-15 |
| AT405943B (en) | 1999-12-27 |
| AU731372B2 (en) | 2001-03-29 |
| AR010881A1 (en) | 2000-07-12 |
| WO1998033943A2 (en) | 1998-08-06 |
| MY120018A (en) | 2005-08-30 |
| DE19803431C2 (en) | 1999-12-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |