AU2016201549B2 - Impact hammer for comminuting stock, in particular rocks - Google Patents
Impact hammer for comminuting stock, in particular rocks Download PDFInfo
- Publication number
- AU2016201549B2 AU2016201549B2 AU2016201549A AU2016201549A AU2016201549B2 AU 2016201549 B2 AU2016201549 B2 AU 2016201549B2 AU 2016201549 A AU2016201549 A AU 2016201549A AU 2016201549 A AU2016201549 A AU 2016201549A AU 2016201549 B2 AU2016201549 B2 AU 2016201549B2
- Authority
- AU
- Australia
- Prior art keywords
- hammer
- wear protection
- hammer head
- impact
- attached
- 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.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2210/00—Codes relating to different types of disintegrating devices
- B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Earth Drilling (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Abstract 5 The present invention relates to an impact hammer 10 for a hammer mill for comminuting stock, in particular rocks, said impact hammer 10 comprising a hammer head 12 and at least one wear protection element 14a-f which is attached to the hammer head 12, wherein the hammer head 12 comprises high temperature-resistant steel, and the wear protection element 14a-f comprises hard metal. -Fig.1- _0 1/3 u C I/ ------------/ N --------- /1/ -- NI r1ru -o N ----------------- --------------- ---- -- 0~ ~ ---- --- -- - - -
Description
The present invention relates to an impact hammer 10 for a hammer mill for comminuting stock, in particular rocks, said impact hammer 10 comprising a hammer head 12 and at least one wear protection element 14a-f which is attached to the hammer head 12, wherein the hammer head 12 comprises high temperature-resistant steel, and the wear protection element 14a-f comprises hard metal.
-Fig.12016201549 10 Mar 2016
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2016201549 29 Aug 2018
Impact hammer for comminuting stock, in particular rocks
The invention relates to an impact hammer for comminuting stock, in particular a 5 stream of stock, and a hammer mill having such an impact hammer.
Hammer mills which have at least one rotor, to which impact hammers which are mutually spaced apart on the circumference are attached, are usually employed for comminuting stock, such as, for example, streams of stock containing ore, or a stream of stock containing carbon and/or residues from the production of pig iron, such as the most varied types of slag. Such a hammer mill is known from EP 1 128 908 B1.
High wear on the impact hammers often arises when comminuting ores, in particular nickel ores, potentially leading to severe damage to or destruction of the hammer mill.
Replacing the impact hammers is very time consuming and cost intensive.
Proceeding therefrom, it would be advantageous if the present invention would provide an impact hammer which overcomes the above-mentioned disadvantages and has high wear resistance.
According to a first aspect, an impact hammer for a hammer mill for comminuting stock, in particular streams of stock, comprises a hammer head and at least one wear protection element which is attached to the hammer head, wherein the hammer head comprises high temperature-resistant steel, and the wear protection element comprises hard metal.
The stock to be comminuted, in particular streams of stock, preferably comprises streams of stock containing ore, or streams of stock containing carbon and/or streams of stock containing residues from the production of pig iron, such as the most varied types of slag.
High temperature-resistant steel is understood to be a heat-resistant steel having a high chromium-nickel proportion and having a temperature resistance of up to 650°C, in particular up to 1000°C. Such types of steel are, for example, austenitic chromium2016201549 29 Aug 2018 nickel steel types, such as, for example, GX25CrNiSi18-9, GX40CrNiSi25-12, and GX40NiCrSiNb35-26. High temperature-resistant steel types up to 600°C are, for example, steel types according to DIN EN 10213. High temperature-resistant steel types up to 1200°C are, for example, steel types according to DIN EN 10295.
Hard metals are understood to be sintered carbide hard metals having high hardness, wear resistance, and heat resistance. For example, hard metals have 90 - 94% tungsten carbide and 6 - 10% cobalt.
An impact hammer installed in a hammer mill is attached to a rotor rotating about a rotation axis. During operation of the hammer mill the impact hammer rotates about the rotation axis of the rotor of the hammer mill, wherein the end side of the hammer head points in the rotation direction of the rotor of the hammer mill and forms the impact face for the stock to be comminuted. The wear protection elements are preferably disposed on the end side of the hammer head. For example, wear protection elements are also disposed on the lateral faces and on that external face of the hammer head that during rotation points radially outward.
A hammer head of high temperature-resistant steel and wear protection elements of hard metal, which are attached to the former, enable such an impact hammer to be employed for comminuting hot stock. Temperatures of approx. 500 - 1000°C, for example, arise when comminuting ores, in particular when grinding nickel ores, wherein hot gases are employed prior to or during grinding, in order for the ores to be dried. In particular, the comminution installation is perfused by hot gases during grinding in order for the ores to be dried. This stream of hot gas at the same time conveys the stock to be comminuted through the comminution installation and is thus in direct contact with the impact hammer.
In particular the combination of the hammer head of high temperature-resistant steel with the wear protection element of hard metal enables reliable wear protection in the case of applications in a high temperature range from 500°C up to approx. 1000°C. In comparison with a general type of construction steel, for example, the high temperature-resistant steel of the hammer head furthermore has less heat loss at high temperatures such as arise when comminuting ores, for example. Therefore, the high
2016201549 29 Aug 2018 temperature-resistant steel has less wear, on account of which secure fixing of the wear protection elements in the hammer head is guaranteed.
Furthermore, the high temperature-resistant steel enables machining of the surface of 5 the hammer head, such that clearances for receiving the wear protection elements may be incorporated without great complexity, for example by milling. The use of high temperature-resistant steel also enables the wear protection elements to be attached in a targeted manner to the most wear-intensive regions of the hammer head, in particular to those regions which during operation of the hammer head are radially outward. Attaching wear protection elements to the less wear-intensive regions of the hammer head may be dispensed with since the steel used has low wear, in particular at high temperatures. This entails simple and cost-effective production of the impact hammers. Moreover, the hardness and wear properties of the high temperatureresistant steel are not influenced by any soldering/brazing process.
According to a first embodiment, the hammer head comprises austenitic chromiumnickel steel selected from DIN EN 10295, for example GX25CrNiSi18-9 (1.4825), GX40CrNiSi25-12 (1.4837) or GX40NiCrSiNb35-26 (1.4852). These types of steel in terms of the wear resistance and simultaneous heat resistance thereof have proven particularly advantageous in the application of grinding ores, in particular nickel ores.
According to a further embodiment, the at least one wear protection element is releasably attached to the hammer head. For example, the wear protection element is attached to the hammer head by way of a screw connection, an adhesively bonded connection, or a clamping or plug-in connection. A combination of the aforementioned connections is likewise possible.
According to a further embodiment, the wear protection element is attached to the hammer head by means of soldering/brazing. Soldering/brazing offers a simple possibility for fastening the wear protection element to the hammer head, wherein a clearance onto which the solder and the wear protection element are applied is configured in the hammer head, for example. In particular, a material web of high temperature-resistant steel is configured between adjacent wear protection elements. For example, the wear protection elements are disposed beside one another in rows, wherein a web of high temperature-resistant steel is configured between two adjacent
2016201549 29 Aug 2018 rows of wear protection elements. On account of the web, the tensions which arise during soldering/brazing due to the dissimilar coefficients of thermal expansion of steel and of the wear protection element are reduced. Breakage of the wear protection elements may thus be prevented.
Preferably, the wear protection element is attached to the hammer head by means of a high-temperature solder. The use of a high-temperature solder enables the hammer head to be employed in environments having high temperatures, such as, for example, 500°C- 1000°C.
According to a further embodiment, the hammer head has a substantially cubic shape. The hammer head preferably comprises an end face in which at least one clearance is configured, and wherein the at least one wear protection element is disposed in the clearance. During operation the end face of the impact hammer points in the rotation direction of the impact hammer and is thus exposed to maximum wear. Disposing the wear protection elements in a clearance on the end face offers secure fixing of the wear protection elements and thus reliable wear protection of the impact hammer.
According to a further embodiment, the impact hammer comprises at least one hammer head segment which is attached to the hammer head and has at least one wear protection element. Such a hammer head segment offers the advantage of simple replaceability of a region of the hammer head, to which at least one wear protection element is attached. For example, it is possible for regions of the hammer head which are exposed to particularly high wear, such as, for example, those regions of the impact hammer that during operation face radially outward, to be configured so as to be replaceable and for a plurality of wear protection elements to be attached thereto. This significantly simplifies replacement of a plurality of wear protection elements and thus significantly reduces maintenance time of the impact hammer. The hammer head segment is preferably configured from high temperature-resistant steel and is substantially ashlar-shaped. In particular, the hammer head segment is attached in a clearance in the hammer head, wherein the clearance is disposed along the edge of the end side towards the upper side of the hammer head, for example. The hammer head segment is fastened in the clearance by means of welding, soldering/brazing, or adhesive bonding, for example.
2016201549 29 Aug 2018
According to a further embodiment, the hammer head segment is releasably attached to the hammer head. For example, the hammer head segment is attached to the hammer head by means of screws or at least one dovetail guide. Releasable fastening of the hammer head segment offers the advantage of rapid and simple replaceability of the hammer head segment. In particular, the dovetail guide is disposed in such a manner that the hammer head segment is released from the hammer head by a movement in the direction of the end side of the hammer head.
According to a further embodiment, the wear protection elements have a tooth shape. 10 This enables efficient comminution of the ground stock, in particular of the ore. The tooth shape is configured so as to be rounded or so as to taper off into a point having a crack edge, for example. Preferably, the wear protection elements on the external regions of the impact hammer are configured so as to be tooth-shaped, in particular roof-shaped, wherein those wear protection elements that are disposed on the regions of the hammer head that point radially inward are configured so as to be plate-shaped.
According to a further embodiment, the at least one wear protection element is attached to the hammer head by way of a support plate. A support plate is for example a plate configured from steel, in particular high temperature-resistant steel, which is preferably attached to the hammer head by means of welding, soldering/brazing, adhesive bonding, or screwing. In particular, the support plate is releasably attached to the hammer head and has a plurality of wear protection elements, such that simple replacement of a plurality of wear protection elements is enabled.
The invention furthermore relates to a hammer mill having a rotor which is attached so as to be rotatable about an axle, and has at least one impact hammer as described above, which is attached to the rotor. The advantages explained in the context of the impact hammer also apply to the hammer mill having such an impact hammer. The hammer mill and the impact hammer are preferably configured in such a manner that they are employed for comminuting at a temperature of 500° - 1300°C, in particular 850 - 1050°C, most preferably 650° - 900°C.
2016201549 29 Aug 2018
Description of the drawings
The invention is explained in more detail hereunder by means of a plurality of exemplary embodiments with reference to the appended figures.
Fig. 1 shows a schematic illustration of an impact hammer according to one exemplary embodiment, in a perspective view.
Fig. 2 shows a schematic illustration of an impact hammer according to the exemplary embodiment of Fig. 1, in a further perspective view.
Fig. 3 shows a schematic illustration of an impact hammer according to a further exemplary embodiment, in a perspective sectional view.
Fig. 4 shows a schematic illustration of an impact hammer according to a further exemplary embodiment, in a perspective sectional view.
Fig. 5 shows a schematic sectional illustration of a hammer mill having an impact hammer according to the exemplary embodiment of Figs. 1 and 2.
Figs. 1 and 2 show an impact hammer 10 having a hammer head 12 and a plurality of wear protection elements 14a-f. The hammer head 12 is configured so as to be substantially ashlar-shaped, and has an end side 16. In the case of an impact hammer
10 installed in a hammer mill, the end side 16 points in the rotation direction of the rotor of the hammer mill and forms an impact face for the stock to be comminuted. The impact hammer 10 illustrated in Figs. 1 and 2, in a state in which the former is installed in the hammer mill, rotates about the rotation axis of the rotor of the hammer mill, such that the upper side which adjoins the end side 16 points radially outward and forms the external side 22 of the hammer head. Furthermore, the hammer head 12 in each of the two lateral faces has one rectangular clearance 20 which serves as protection for a fastening element, such as a bolt, for example, by way of which the impact hammer is attached to a hammer mill. A through bore 18, which runs parallel with the end side 16 and so as to be approximately centric in the longitudinal direction through the hammer head 12 of the impact hammer 10 and serves for receiving the impact hammer 10 in a
2016201549 29 Aug 2018 hammer mill, is disposed so as to be centric in relation to the rectangular clearance 20. Furthermore, the hammer head 12 on the internal side lying opposite the external side 22 has a further and substantially rectangular clearance 24 which extends from the internal side in the direction of the external side 22, such that the hammer head 12 forms a hollow body which is open towards the internal side and which serves for receiving the impact hammer in a hammer mill.
A plurality of wear protection elements 14a and 14b are disposed in clearances on the end side 16 of the hammer head 12. The wear protection elements 14b are disposed in a groove which is configured along the edge of the end side toward the external side 22 and have a rounded tooth profile. In an exemplary manner, four wear protection elements 14b are disposed in the groove in Figs. 1 and 2. The remaining region of the end side has a plurality of plate-shaped wear protection elements 14a which are disposed in rows. In an exemplary manner, in Figs. 1 and 2 in each case six plate15 shaped wear protection elements are disposed in a clearance running in the longitudinal direction of the end face, wherein the end face 16 of the hammer head comprises five such clearances having in each case six wear protection elements 14a. In each case one material web which spaces the wear protection elements apart from one another is configured between the rows of the wear protection elements 14a.
An elongate clearance, which in an exemplary manner receives four wear protection elements 14e which are disposed in a row, is disposed on the external side 22 of the hammer head in the region of the edge towards the end side 16 and parallel therewith. The wear protection elements 14e have a tooth profile. Two rows of wear protection elements 14c and 14d are disposed on the lateral regions of which one is illustrated in an exemplary manner in Figs. 1 and 2. The wear protection elements 14d are disposed in a groove along the edge towards the upper side 22 of the hammer head, and have a tooth profile. In an exemplary manner, six wear protection elements 14d are disposed in the groove. Six plate-shaped wear protection elements 14c are disposed in a clearance, so as to be parallel with the wear protection elements 14d. The lateral face lying opposite thereto is configured in a corresponding manner, for example, wherein the tooth-shaped wear protection elements 14f are illustrated in Fig. 1.
It is conceivable for wear protection elements to be attached only to the end side 16 of the hammer head 12, and for the further lateral faces of the hammer head to be
2016201549 29 Aug 2018 configured without wear protection elements. Furthermore, only the row of toothshaped wear protection elements 14b in the groove along the edge towards the external side of the hammer head 12 may also be attached to the end side 16.
The wear protection elements 14a-f in the clearances of the hammer head 12 are fastened by means of soldering/brazing, for example. A high-temperature solder having a high proportion of copper and nickel is used for fastening the wear protection elements 14a-f, for example. It is likewise conceivable for wear protection elements to be fastened to the hammer head 12 by means of a welding, adhesive-bonding, screwing, clamping or plug-in connection.
The hammer head is configured from high temperature-resistant steel. Such heatresistant steel types having a temperature range of up to 600°C are to be found in DIN EN 10213, or having a temperature range of up to 1200°C in DIN EN 10295, for example.
In particular, the wear protection elements 14a-f are configured from hard metal, such as sintered carbide hard metal. Hard metals have high hardness, wear resistance, and heat resistance, and comprise 90 - 94% tungsten carbide and 6 - 10% cobalt, for example. Depending on the requirements of the individual elements, further compositions which are composed of tungsten carbide in a range between 70 - 99% and of cobalt in a range from 1 - 30% are known.
Fig. 3 shows a further exemplary embodiment of an impact hammer 10, which substantially corresponds to the impact hammer 10 of Figs. 1 and 2 but differs therefrom in that the hammer head 12 of the impact hammer 10 of Fig. 3 has a further clearance which is configured on the edge of the end side 16 towards the upper side 22. A hammer head segment 15, which is configured so as to be substantially ashlarshaped and which configures the external region of the end side 16 and that region of the upper side 22 that adjoins the end side 16, is attached in the clearance. The hammer head segment 15 is releasably attached in the clearance of the hammer head and has a plurality of clearances for receiving wear protection elements 14b, 14e, and 14f. In an exemplary manner, two rows of wear protection elements 14a and 14b are attached to the end side of the hammer head segment 15, wherein the tooth-shaped wear protection elements 14b are attached in a clearance which runs along the edge
2016201549 29 Aug 2018 towards the upper side of the hammer head segment 15, and the plate-shaped wear protection elements 14a are mutually disposed in rows below the wear protection elements 14b on the end side. Furthermore, the hammer head segment 15 on the upper side and on the lateral faces pointing outward has further clearances in which the wear protection elements 14c-f are disposed, the design embodiment of the latter having been described with reference to Figs. 1 and 2.
The hammer head segment 15 is releasably attached in the clearance of the hammer head 12 and is configured from high temperature-resistant steel. For example, the hammer head segment 15 is fastened to the hammer head 12 by means of screwing, soldering/brazing, or welding, or in a form-fitting manner by way of a clamping or plugin connection. A combination of these types of fastening is likewise possible.
Fig. 4 shows an impact hammer 10 according to Fig. 3, wherein the hammer head segment in Fig. 4 is attached in the clearance of the hammer head 12 by means of a dovetail guide 25. The dovetail guide 25 is configured in that face of the clearance that points in the direction of the upper side 22, such that the hammer head segment 15 is movable in the direction of the end side 16 and may be removed from the hammer head.
Fig. 5 shows a hammer mill 26 having a plurality of impact hammers 10 according to Figs. 1 and 2. The hammer mill 26 has a rotor 34 having a rotor disc 32 on which, in an exemplary manner, five impact hammers 10 are attached so as to be uniformly spaced apart across the circumference of the rotor disc 32. Each impact hammer 10 is attached to a mounting bolt 28 so as to be freely rotatable in a pivoting space. The mounting bolt 28 runs through the through bore 18 of the hammer head 12 that is illustrated in Figs. 1 and 2. The rotor 34 is rotatable about the axle 30, such that the impact hammers 10 likewise rotate about the axle 30 and are simultaneously received on the mounting bolt 28 so as to be pivotable.
Fig. 5 shows only one rotor 34 of a hammer mill 26, wherein a plurality of rotors 34 having, for example, five impact hammers 10 are attached by way of the axle 30.
2016201549 29 Aug 2018
List of reference signs
Impact hammer
Hammerhead
14a-f Wear protection element
15 Hammer head segment
End side
Through bore
Clearance
External side
24 Clearance
Dovetail guide
Hammer mill
Mounting bolt
Axle
32 Rotor discs
Rotor
In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.
It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other country
2016201549 27 Sep 2018
Claims (3)
1/3 ,Ω ro
2016201549 10 Mar 2016
1. Impact hammer for comminuting ores having a hammer head and at least one wear protection element which is attached to the hammer head,
5 wherein the hammer head comprises high temperature-resistant steel, and the wear protection element comprises hard metal.
2/3
2. The impact hammer of claim 1, wherein the impact hammer is an impact hammer for comminuting nickel ores in a hot gas stream.
3. Impact hammer according to Claim 1 or 2, wherein the hammer head comprises austenitic chromium-nickel steel.
4. Impact hammer according to any one of the preceding claims, wherein the at
15 least one wear protection element is releasably attached to the hammer head.
5. Impact hammer according to any one of the preceding claims, wherein the wear protection element is attached to the hammer head by means of soldering/brazing.
6. Impact hammer according to any one of the preceding claims, wherein the wear protection element is attached to the hammer head by means of a hightemperature solder.
7. Impact hammer according to any one of the preceding claims, wherein the hammer head has a substantially cubic shape.
8. Impact hammer according to any one of the preceding claims, wherein the hammer head has an end face in which at least one clearance is configured,
30 and wherein the at least one wear protection element is disposed in the clearance.
9. Impact hammer according to any one of the preceding claims, wherein the impact hammer comprises at least one hammer head segment which is
2016201549 29 Aug 2018 attached to the hammer head and has at least one wear protection element.
10. Impact hammer according to Claim 9, wherein the at least one hammer head segment is releasably attached to the hammer head.
11. Impact hammer according to any one of the preceding claims, wherein the at least one wear protection element has a tooth shape.
12. Impact hammer according to any one of the preceding claims, wherein the at
10 least one wear protection element is attached to the hammer head by way of a support plate.
13. Hammer mill having a rotor which is attached so as to be rotatable about an axle, and at least one impact hammer according to any one of the preceding
15 claims, which is attached to the rotor.
2016201549 10 Mar 2016
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2016201549 10 Mar 2016 ο
ο m
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015205012.2A DE102015205012A1 (en) | 2015-03-19 | 2015-03-19 | Hammer for shredding materials, especially rocks |
| DE102015205012.2 | 2015-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2016201549A1 AU2016201549A1 (en) | 2016-10-06 |
| AU2016201549B2 true AU2016201549B2 (en) | 2018-10-18 |
Family
ID=56853287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016201549A Ceased AU2016201549B2 (en) | 2015-03-19 | 2016-03-10 | Impact hammer for comminuting stock, in particular rocks |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU2016201549B2 (en) |
| BR (1) | BR102016005785A2 (en) |
| DE (1) | DE102015205012A1 (en) |
| FR (1) | FR3033716B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109433335A (en) * | 2018-10-22 | 2019-03-08 | 武汉大通窑炉机械设备有限公司 | A kind of high-strength, high-anti-friction grinder hammerhead |
| DE102018127992A1 (en) * | 2018-11-08 | 2020-05-14 | Schäfer Elektrotechnik U. Sondermaschinen Gmbh | Impact reactor |
| CN114632590A (en) * | 2022-02-15 | 2022-06-17 | 平凉市慧捷机械制造有限责任公司 | Double-sided breaking hammer for vertical shaft crusher |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718837A1 (en) * | 1997-05-06 | 1998-11-19 | Kronenberger Ernst Josef Dipl | Impact elements for shredder rotors |
| AU2003261479A1 (en) * | 2002-11-28 | 2004-06-17 | Bradken Resources Pty Limited | Shredder hammer tip |
| US20070045457A1 (en) * | 2005-08-26 | 2007-03-01 | Hickey Jeffrey T | Hammer tip and hammer using the hammer tip |
| JP2007283243A (en) * | 2006-04-19 | 2007-11-01 | Nippon Steel Corp | Hammer head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2663505A (en) * | 1951-07-17 | 1953-12-22 | Charles E Sennholtz | Rotary impact hammer for pulverizers |
| DE7630779U1 (en) * | 1976-10-01 | 1977-01-13 | Claudius Peters Ag, 2000 Hamburg | HAMMER FOR HAMMER CRUSHER |
| DE19848866A1 (en) | 1998-10-23 | 2000-04-27 | Krupp Foerdertechnik Gmbh | Hammer breaker to break up types of stone has five striker hammers installed on each impact disc, and difference between diameter of rotor and diameter of impact discs, and with it the hammer projection, is selected as large as possible |
| DE102011085520B4 (en) * | 2011-10-31 | 2017-05-04 | General Electric Technology Gmbh | Hammer of a beater mill |
| CN204034798U (en) * | 2014-09-03 | 2014-12-24 | 杭州群利明胶化工有限公司 | A kind of pulverizer hammer |
-
2015
- 2015-03-19 DE DE102015205012.2A patent/DE102015205012A1/en not_active Ceased
-
2016
- 2016-03-10 AU AU2016201549A patent/AU2016201549B2/en not_active Ceased
- 2016-03-16 BR BR102016005785A patent/BR102016005785A2/en active Search and Examination
- 2016-03-18 FR FR1652299A patent/FR3033716B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19718837A1 (en) * | 1997-05-06 | 1998-11-19 | Kronenberger Ernst Josef Dipl | Impact elements for shredder rotors |
| AU2003261479A1 (en) * | 2002-11-28 | 2004-06-17 | Bradken Resources Pty Limited | Shredder hammer tip |
| US20070045457A1 (en) * | 2005-08-26 | 2007-03-01 | Hickey Jeffrey T | Hammer tip and hammer using the hammer tip |
| JP2007283243A (en) * | 2006-04-19 | 2007-11-01 | Nippon Steel Corp | Hammer head |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3033716A1 (en) | 2016-09-23 |
| DE102015205012A1 (en) | 2016-09-22 |
| BR102016005785A2 (en) | 2016-10-18 |
| AU2016201549A1 (en) | 2016-10-06 |
| FR3033716B1 (en) | 2019-12-27 |
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| HB | Alteration of name in register |
Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG Free format text: FORMER NAME(S): THYSSENKRUPP AG Owner name: THYSSENKRUPP AG Free format text: FORMER NAME(S): THYSSENKRUPP AG |
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