JP3147136B2 - Vertical crusher - Google Patents
Vertical crusherInfo
- Publication number
- JP3147136B2 JP3147136B2 JP07081394A JP7081394A JP3147136B2 JP 3147136 B2 JP3147136 B2 JP 3147136B2 JP 07081394 A JP07081394 A JP 07081394A JP 7081394 A JP7081394 A JP 7081394A JP 3147136 B2 JP3147136 B2 JP 3147136B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- wear
- diameter side
- welding
- crushing
- 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
Landscapes
- Crushing And Grinding (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転テーブルと粉砕ロ
ーラとの協働により、セメント原料、スラグ、クリンカ
やセラミック、化学品などの原料を粉砕する竪型粉砕機
に係り、特に粉砕ローラの偏摩耗を防止し、粉砕ローラ
の寿命を改善するとともに偏摩耗による処理能力の低下
の防止を図った竪型粉砕機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical crusher for grinding raw materials such as cement raw materials, slag, clinker, ceramics and chemicals by cooperation of a rotary table and a crushing roller. The present invention relates to a vertical pulverizer for preventing uneven wear, improving the life of a grinding roller, and preventing a reduction in processing capacity due to uneven wear.
【０００２】[0002]
【従来の技術】石灰石やスラグ、セメント原料などの原
料を細かく粉砕し粉体とする粉砕機の一種として、図４
に示すように、回転テーブルと粉砕ローラとを備えた竪
型粉砕機１が広く用いられている。この種の粉砕機は、
円筒状ケーシング１５の下部においてモータ２Ａにより
減速機２で駆動されて低速回転する円盤状の回転テーブ
ル３Ａと、その上面外周部を円周方向へ等分する箇所に
油圧などで圧接されて従動回転する複数個の粉砕ローラ
４とを備えている。2. Description of the Related Art FIG. 4 shows a kind of crusher for finely pulverizing raw materials such as limestone, slag, and cement raw materials into powder.
As shown in FIG. 1, a vertical pulverizer 1 having a rotary table and a pulverizing roller is widely used. This kind of crusher
The disk-shaped rotary table 3A, which is driven by the reduction gear 2 by the motor 2A at the lower portion of the cylindrical casing 15 and rotates at a low speed, is pressed by hydraulic pressure or the like to a portion equally dividing the outer peripheral portion of the upper surface in the circumferential direction, and is driven to rotate. And a plurality of crushing rollers 4.
【０００３】粉砕ローラ４はケーシング１５に軸６によ
って揺動自在に軸支されたアーム５とアーム７を介して
油圧シリンダ９のピストンロッド１０に連結されてお
り、油圧シリンダ９を作動させることにより、粉砕ロー
ラ４を回転テーブル３Ａ上に押圧して原料への粉砕圧力
を与えている。３Ｂは回転テーブル３Ａの外周縁に設け
られ原料層厚を調整するダムリング、１４は回転テーブ
ル３Ａ周囲のガス吹上用環状空間通路、１４Ａはガス供
給路、１３は羽根１３Ａにより粉砕された原料を分級す
る回転式セパレータ、１６はガスとともに製品を取り出
す排出口、１７は原料投入シュートである。The crushing roller 4 is connected to a piston rod 10 of a hydraulic cylinder 9 via an arm 5 and an arm 7 which are pivotally supported by a shaft 6 on a casing 15. The crushing roller 4 is pressed on the rotary table 3A to apply crushing pressure to the raw material. 3B is a dam ring provided on the outer peripheral edge of the rotary table 3A to adjust the thickness of the raw material layer, 14 is an annular space passage for gas blowing around the rotary table 3A, 14A is a gas supply path, and 13 is a raw material pulverized by the blade 13A. A rotary separator for classification, 16 is an outlet for taking out the product together with the gas, and 17 is a raw material input chute.
【０００４】このような竪型粉砕機において、回転テー
ブルの中央部へ原料投入シュート１７で供給された原料
は、回転テーブル３Ａの回転によりテーブル半径方向の
遠心力を受けて回転テーブル３Ａ上を滑る時に回転テー
ブル３Ａにより回転方向の力を受け、回転テーブル３Ａ
との間で滑って回転テーブル３Ａの回転数よりいくらか
遅い回転を行う。以上２つの力、即ち、半径方向と回転
方向の力とが合成され、原料は回転テーブル３Ａ上を渦
巻状の軌跡を描いて回転テーブル３Ａの外周部へ移動す
る。この外周部には、ローラが圧接されて回転している
ので、渦巻線を描いた原料は粉砕ローラ４と回転テーブ
ル３Ａとの間へローラ軸方向とある角度をなす方向から
進入して噛込まれて粉砕される。In such a vertical pulverizer, the raw material supplied to the center of the rotary table by the raw material charging chute 17 receives the centrifugal force in the table radial direction by the rotation of the rotary table 3A and slides on the rotary table 3A. Sometimes, a force in the rotating direction is received by the rotating table 3A, and the rotating table 3A
And a rotation somewhat slower than the rotation speed of the turntable 3A is performed. The above two forces, that is, the forces in the radial direction and the rotational direction are combined, and the raw material moves to the outer peripheral portion of the rotary table 3A along a spiral trajectory on the rotary table 3A. Since a roller is pressed against this outer peripheral portion and is rotating, the raw material describing the spiral enters the crushing roller 4 and the rotary table 3A from a direction forming an angle with the roller axis direction and bites. Rarely crushed.
【０００５】一方、ケーシング１５の基部には熱風ダク
ト２０によって空気、あるいは熱風などのガスが導かれ
ており、このガスが回転テーブル３Ａの外周面とケーシ
ングの内周面との間の環状空間通路１４から吹き上がる
ことにより、粉砕された微粉体はガスに同伴されてケー
シング１５内を上昇し、上部に位置するセパレータ１３
の羽根１３Ａにより分級作用を受け、所定粒度の製品は
ガスとともに排出口１６から排出され次の工程へ送られ
る。On the other hand, a gas such as air or hot air is guided to the base of the casing 15 by a hot air duct 20, and this gas flows in an annular space passage between the outer peripheral surface of the turntable 3A and the inner peripheral surface of the casing. 14, the pulverized fine powder rises in the casing 15 accompanied by the gas, and the
The product having a predetermined particle size is discharged from the discharge port 16 together with the gas and sent to the next step.
【０００６】[0006]
【発明が解決しようとする課題】ところが、従来の竪型
粉砕機１において使用される粉砕ローラ４は、図３に示
すような截頭円錐台形状のものを使用することが多い。
このタイプの粉砕ローラ４は、図３に示すように、粉砕
ローラ４の回転軸４ａの延長部分が回転テーブル３Ａの
中心よりも遠方で回転テーブル３Ａと交差するよう配設
されており、回転テーブル３Ａに従動される粉砕ローラ
４の周面のうち回転テーブル３Ａと接触している半径方
向のライン上では、１点を除いて回転テーブル３Ａの周
速と異なる周速で回転することになる。竪型粉砕機１に
おいては、これらの作用はただ単に圧縮力による粉砕だ
けでなく周速のズレによる剪断力による摩砕作用をも加
え、より効率的な粉砕が行われる所以である。しかしな
がら、この剪断作用を含む効率のよい粉砕では、マイナ
スの要素として粉砕ローラ周面や回転テーブルライナ面
には必然的に摩耗が生じる。殊に、粉砕ローラ４におい
ては、図３に示す摩耗カーブＡ、Ｂ、Ｃの順に経時的に
摩耗が進行し、しかも、粉砕ローラ４の小径側よりも大
径側に大きく摩耗が進行する、いわゆる、偏摩耗が起
り、これが粉砕ローラ４の寿命を縮めると同時に、粉砕
効率を著しく低下させる原因となっていた。However, the crushing roller 4 used in the conventional vertical crusher 1 often has a truncated conical shape as shown in FIG.
As shown in FIG. 3, the crushing roller 4 of this type is disposed such that an extended portion of the rotary shaft 4a of the crushing roller 4 intersects with the rotary table 3A at a distance from the center of the rotary table 3A. On the radial line of the peripheral surface of the crushing roller 4 driven by 3A, which is in contact with the rotary table 3A, it rotates at a peripheral speed different from the peripheral speed of the rotary table 3A except for one point. In the vertical pulverizer 1, these functions are not only crushed by a compressive force but also crushed by a shear force due to a deviation in peripheral speed, which is why more efficient crushing is performed. However, in the efficient pulverization including the shearing action, the peripheral surface of the pulverizing roller and the rotating table liner surface inevitably wear as a negative factor. In particular, in the crushing roller 4, wear progresses with time in the order of the wear curves A, B, and C shown in FIG. 3, and further, the wear progresses more largely on the large diameter side than on the small diameter side of the crushing roller 4. So-called uneven wear occurs, which shortens the life of the crushing roller 4 and at the same time causes the crushing efficiency to be significantly reduced.
【０００７】[0007]
【課題を解決するための手段】以上の課題を解決して、
偏摩耗の少ない粉砕ローラを備えて粉砕効率の低下を防
止するため、本発明においては、回転テーブルの外周部
上面に複数個の回転自在な粉砕ローラを配置し、回転テ
ーブル上に供給した原料を粉砕ローラに所定の粉砕圧力
を与えて回転テーブル上面と粉砕ローラ周面との間で粉
砕する竪型粉砕機において、該粉砕ローラは截頭円錐台
形状をしており、かつ、小径側の隅角部の曲率半径を大
径側の隅角部の曲率半径に比べて大きく、２〜５倍にす
るとともに、該粉砕ローラの周面のうち大径側の周面に
耐摩耗性の硬化肉盛を形成した。また、さらに、硬化肉
盛は、硬化肉盛用溶接棒を使用して被覆アーク溶接、ガ
ス溶接、サブマージアーク溶接、ティグ溶接、セルフシ
ールドアーク溶接のいずれかにより形成した。[Means for Solving the Problems] By solving the above problems,
In order to prevent a decrease in the crushing efficiency by providing a crushing roller with less uneven wear, in the present invention, a plurality of rotatable crushing rollers are arranged on the upper surface of the outer peripheral portion of the rotating table, and the raw material supplied on the rotating table is used. In a vertical pulverizer in which a predetermined pulverizing pressure is applied to a pulverizing roller to pulverize between an upper surface of a rotary table and a peripheral surface of the pulverizing roller, the pulverizing roller has a truncated conical shape and a small-diameter corner. The radius of curvature of the corners is larger than the radius of curvature of the corners on the large diameter side and is 2 to 5 times larger, and the wear-resistant hardened meat on the large diameter side of the peripheral surface of the crushing roller. An asperity was formed. Further, the hardfacing was formed by any of covering arc welding, gas welding, submerged arc welding, TIG welding, and self-shielding arc welding using a hardfacing welding rod.
【０００８】[0008]
【作用】本発明における粉砕ローラは、小径側の隅角部
の曲率半径が大径側に比べて２〜５倍と大きくしてある
ので、粉砕ローラの使用開始には粉砕仕事は大径側で行
われ大径側はほぼ一様な摩耗が進行する。一方、大径側
には耐摩耗性の硬化肉盛が施工されており、摩耗の進行
が従来のものよりも遅く、かつ、その進行程度も一様
で、周面の半径方向における粉砕仕事の平準化が行わ
れ、偏摩耗による粉砕効率の低下が防止される。The crushing roller of the present invention has a radius of curvature at the corner portion on the small diameter side which is 2 to 5 times larger than that on the large diameter side. In the large diameter side, almost uniform wear proceeds. On the other hand, on the large diameter side, wear-resistant hardfacing is applied, the progress of wear is slower than the conventional one, and the progress is uniform, and the grinding work in the radial direction of the peripheral surface is performed. Leveling is performed to prevent a reduction in grinding efficiency due to uneven wear.
【０００９】[0009]
【実施例】以下図面に基づいて本発明の実施例の詳細に
ついて説明する。図１〜図２は本発明の実施例に係り、
図１は粉砕ローラの要部縦断図面、図２は粉砕ローラの
摩耗進行状況を説明する要部縦断面図である。図１に示
すように、粉砕ローラ４は截頭円錐台形状をしており、
かつ、その断面形状は小径側の隅角部の曲率半径Ｒ
1 は、大径側の隅角部の曲率半径Ｒ2 の２〜５倍に形成
される。また、原料被粉砕物を介在して回転テーブル３
Ａの上面に当接する粉砕ローラ４の周面のうち、大径側
寄りの周面には深さ５〜１０ｍｍ程度の硬化肉盛４Ｓが
施工される。上記の粉砕ローラ４以外の構造について
は、従来技術で説明した竪型粉砕機１の構造と全く同一
である。粉砕ローラ４の周面などに耐摩耗性を与えるた
め耐摩耗性合金を肉盛りし、硬化させることを硬化肉盛
溶接といい、肉盛溶接には被覆アーク溶接、ガス溶接、
サブマージアーク溶接、ティグ溶接、セルフシールドア
ーク溶接などが行われ、溶接材料としては種々のものが
市販されており利用できる。その中でも被覆アーク溶接
が最も一般的に実施され、硬化肉盛用被覆アーク溶接棒
は、ＪＩＳ Ｚ３２５１に規定されるパーライト系鋼、
マルテンサイト系鋼、クロム系鋼、マンガンオーステナ
イト系鋼、１６Ｍｎ−１６Ｃｒオーステナイト系鋼、高
クロム鉄系、タングステン炭化物系、コバルト合金系な
どが利用できる。これに対して、ガス溶接による方法で
は、溶加棒に硬化材を使用し、ステライト系（Ｃｏ−Ｃ
ｒ−Ｗ）合金に酸素アセチレン溶接が利用される。ま
た、ティグ溶接では、溶接部が酸化しないという優れた
点があるが、溶接技術がまずいと母材への溶け込みが大
きくなって硬化材が希釈され硬さ（耐摩耗性）が減じる
ので注意が必要である。一方、サブマージアーク溶接や
炭酸ガスアーク溶接などは施工が極めて能率的に行わ
れ、本発明の対象である粉砕ローラのような大型部品や
大量生産に適しているが、装置が高価である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 relate to an embodiment of the present invention,
FIG. 1 is a vertical sectional view of a main part of a crushing roller, and FIG. 2 is a vertical sectional view of a main part for explaining the progress of wear of the crushing roller. As shown in FIG. 1, the crushing roller 4 has a truncated cone shape.
And the cross-sectional shape is the radius of curvature R at the corner on the small diameter side.
1 is formed to be 2 to 5 times the radius of curvature R2 of the corner portion on the large diameter side. In addition, the rotary table 3
Of the peripheral surface of the crushing roller 4 that contacts the upper surface of A, a hardfacing overlay 4S having a depth of about 5 to 10 mm is applied to the peripheral surface closer to the large diameter side. The structure other than the crushing roller 4 is exactly the same as the structure of the vertical crusher 1 described in the related art. Hardening of the wear-resistant alloy to impart wear resistance to the peripheral surface of the crushing roller 4 and the like is called hardfacing welding, and overlay welding includes covering arc welding, gas welding, and the like.
Submerged arc welding, TIG welding, self-shielded arc welding, and the like are performed, and various welding materials are commercially available. Among them, coated arc welding is most commonly performed, and coated arc welding rods for hardfacing are pearlitic steels specified in JIS Z3251,
Martensitic steel, chromium steel, manganese austenitic steel, 16Mn-16Cr austenitic steel, high chromium iron, tungsten carbide, cobalt alloy, etc. can be used. On the other hand, in the method by gas welding, a hardening material is used for a filler rod, and a stellite-based (Co-C
(r-W) The alloy uses oxygen acetylene welding. TIG welding also has the advantage that the weld is not oxidized. However, if welding techniques are poor, the penetration into the base metal increases, the hardened material is diluted, and the hardness (wear resistance) decreases. is necessary. On the other hand, submerged arc welding, carbon dioxide arc welding, and the like are performed extremely efficiently, and are suitable for large parts such as a pulverizing roller, which is an object of the present invention, or for mass production, but the equipment is expensive.
【００１０】次に、このように形成された粉砕ローラ４
を備えた竪型粉砕機１の作動について説明する。図２の
断面形状を有する粉砕ローラ４を備えたテスト機（２ロ
ーラ、回転テーブル径３６０ｍｍ、粉砕原料：セメント
原料）によるテスト状況およびテスト結果より、以下の
知見を得た。テスト期間とローラ周面の摩耗状況より考
慮すると、 運転初期（スタート〜５００時間） 周面のうち小径側はほとんど摩耗がなく、粉砕は大部分
は大径側周面に実施され、大径側の摩耗はほぼ一様であ
る。 運転中期（５００時間〜１０００時間） 大径側周面の摩耗の進行が大きくなるが、半径方向での
落差も小さくほぼ一様な摩耗状態である。小径側摩耗も
徐々に進行するがその程度は小さい。 運転後期（１０００時間以上〜） 小径側周面には硬化肉盛を施工していないので比較的早
い。一方、大径側では粉砕仕事の大半が集中するが硬化
肉盛のため摩耗進行は遅く、全体として従来パターンの
摩耗（大径側で大きく小径側で小さい偏摩耗状態）が修
正改善され、多少のうねりは認められるがほぼ一様な摩
耗状態となる。というような状況であり、偏摩耗が抑止
されるから粉砕仕事の平準化が行われ、従来の偏摩耗に
よる粉砕能力低下が防止される。図３は摩耗の進行状況
を示し、摩耗カーブはカーブＡ、カーブＢ、カーブＣの
ように変化する。本発明の竪型粉砕機１では、以上のよ
うな挙動を示し、粉砕ローラのライフや粉砕能力につい
ても好結果が得られるが、粉砕ローラ４の小径側隅角部
の曲率半径Ｒ1 を曲率半径Ｒ2 の２〜５倍に数値限定し
た理由を述べると、過去のテスト機による種々の粉砕ロ
ーラの摩耗試験および実機運転による実績を解析した結
果、２倍未満の曲率半径Ｒ1 のものでは、従来構造と同
一の摩耗状況で能力低下があり、その効果は２倍のもの
から徐々に発揮され、５倍程度ないしそれ以上の曲率半
径のものは、偏摩耗は起らないが粉砕能力が格段に低下
する現象が起ると推測される（この理由は、曲率半径が
大きすぎると実質的にローラ幅が小さいので粉砕仕事す
る領域が小さく能力低下につながるものと思われる）。Next, the crushing roller 4 thus formed
The operation of the vertical crusher 1 provided with the above will be described. The following knowledge was obtained based on the test conditions and test results obtained using a test machine (two rollers, a rotary table having a diameter of 360 mm, and a crushing raw material: a cement raw material) provided with the crushing roller 4 having the cross-sectional shape shown in FIG. Considering the test period and the wear condition of the roller peripheral surface, the initial stage of operation (start to 500 hours) There is almost no wear on the small diameter side of the peripheral surface, and most of the grinding is performed on the large diameter side peripheral surface, and the large diameter side Wear is almost uniform. Middle period of operation (500 hours to 1000 hours) The progress of wear on the large diameter side peripheral surface increases, but the head in the radial direction is small and almost uniform. The wear on the small diameter side also progresses gradually, but the degree is small. Late stage of operation (1000 hours or more) Since hard facing is not applied to the small diameter side peripheral surface, it is relatively early. On the other hand, on the large diameter side, most of the crushing work is concentrated, but the wear progresses slowly due to hardfacing, and the wear of the conventional pattern (large unevenness on the large diameter side and small unevenness on the small diameter side) has been corrected and improved as a whole. Although undulation is recognized, the wear is almost uniform. In such a situation, uneven wear is suppressed, so that grinding work is leveled, and a decrease in grinding performance due to conventional uneven wear is prevented. FIG. 3 shows the progress of wear, and the wear curve changes as curves A, B, and C. In vertical pulverizing apparatus 1 of the present invention, shows the behavior as described above, although good results can be obtained for the life and grinding ability of the grinding roller, the radius of curvature R 1 of the small diameter side corner of the milling roller 4 curvature Describing reasons for numerical limitation to 2-5 times the radius R 2, the results of analyzing the performance by abrasion test and actual machine operation of various grinding roller according to past the test machine, intended less than twice the radius of curvature R 1 In the same wear situation as the conventional structure, there is a decrease in capacity. The effect is gradually increased from twice as much. If the radius of curvature is about 5 times or more, uneven wear does not occur but the grinding capacity is It is presumed that the phenomenon of remarkable reduction occurs (the reason is that if the radius of curvature is too large, the roller work width is substantially small, so that the area for pulverization work is small and the capacity is reduced).
【００１１】[0011]
【発明の効果】以上述べたように、本発明の竪型粉砕機
においては、偏摩耗が防止され、粉砕ローラの長寿命化
を図るとともに、偏摩耗に起因する能力低下が防止され
る。As described above, in the vertical pulverizer of the present invention, uneven wear is prevented, the life of the pulverizing roller is prolonged, and a decrease in performance due to uneven wear is prevented.
【図１】本発明の実施例に係る粉砕ローラの要部縦断面
図である。FIG. 1 is a longitudinal sectional view of a main part of a grinding roller according to an embodiment of the present invention.
【図２】本発明の実施例に係る粉砕ローラの摩耗進行状
況を示す要部縦断面図である。FIG. 2 is a vertical sectional view of a main part showing a progress of wear of a crushing roller according to the embodiment of the present invention.
【図３】従来の竪型粉砕機の粉砕ローラの要部縦断面図
である。FIG. 3 is a longitudinal sectional view of a main part of a crushing roller of a conventional vertical crusher.
【図４】従来の竪型粉砕機の全体縦断面図である。FIG. 4 is an overall vertical sectional view of a conventional vertical crusher.
１ 竪型粉砕機 ３Ａ 回転テーブル ４ 粉砕ローラ ４ａ 回転軸 ４Ｓ 硬化肉盛 ５ アーム ６ 軸 ７ アーム ９ 油圧シリンダ １４ 環状空間通路 １５ ケーシング １６ 排出口 １７ 原料投入シュート Ａ 摩耗カーブ Ｂ 摩耗カーブ Ｃ 摩耗カーブ Ｒ1 曲率半径（小径側） Ｒ2 曲率半径（大径側）DESCRIPTION OF SYMBOLS 1 Vertical grinder 3A Rotary table 4 Grinding roller 4a Rotating shaft 4S Hardfacing 5 Arm 6 Shaft 7 Arm 9 Hydraulic cylinder 14 Annular space passage 15 Casing 16 Discharge port 17 Material input chute A Wear curve B Wear curve C Wear curve R 1 radius of curvature (small diameter side) R 2 radius of curvature (large diameter side)
Claims (2)
転自在な粉砕ローラを配置し、回転テーブル上に供給し
た原料を粉砕ローラに所定の粉砕圧力を与えて回転テー
ブル上面と粉砕ローラ周面との間で粉砕する竪型粉砕機
において、該粉砕ローラは截頭円錐台形状をしており、
かつ、小径側の隅角部の曲率半径を大径側の隅角部の曲
率半径に比べて大きく、２〜５倍にするとともに、該粉
砕ローラの周面のうち大径側の周面に耐摩耗性の硬化肉
盛を形成したことを特徴とする竪型粉砕機。1. A plurality of rotatable crushing rollers are disposed on an upper surface of an outer peripheral portion of a rotary table, and a predetermined crushing pressure is applied to a crushing roller for a raw material supplied on the rotary table, and an upper surface of the rotating table and a crushing roller peripheral surface are provided. In the vertical pulverizer, the pulverizing roller has a truncated conical shape,
In addition, the radius of curvature of the corner portion on the small diameter side is larger than the radius of curvature of the corner portion on the large diameter side, and is 2 to 5 times larger. A vertical pulverizer characterized by forming a hardened hardfacing of wear resistance.
て被覆アーク溶接、ガス溶接、サブマージアーク溶接、
ティグ溶接、セルフシールドアーク溶接のいずれかによ
り形成された請求項１記載の粉砕ローラを備えた竪型粉
砕機。2. The hardfacing is performed by using a welding electrode for hardfacing, covering arc welding, gas welding, submerged arc welding,
A vertical pulverizer provided with the pulverizing roller according to claim 1, formed by either TIG welding or self-shielded arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07081394A JP3147136B2 (en) | 1994-04-08 | 1994-04-08 | Vertical crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07081394A JP3147136B2 (en) | 1994-04-08 | 1994-04-08 | Vertical crusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07275728A JPH07275728A (en) | 1995-10-24 |
| JP3147136B2 true JP3147136B2 (en) | 2001-03-19 |
Family
ID=13442396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07081394A Expired - Fee Related JP3147136B2 (en) | 1994-04-08 | 1994-04-08 | Vertical crusher |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3147136B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824088B2 (en) * | 2001-05-04 | 2004-11-30 | Foster Wheeler Energy Corporation | Roller mill |
| JP2015142876A (en) * | 2014-01-31 | 2015-08-06 | 宇部興産株式会社 | Vertical crusher |
| DE102018111621B4 (en) * | 2018-05-15 | 2020-01-23 | Helmut Prihoda | Processes to improve the productivity of grinding plants |
-
1994
- 1994-04-08 JP JP07081394A patent/JP3147136B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07275728A (en) | 1995-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0271336B1 (en) | Crushing members for crushers | |
| US5516053A (en) | Welded metal hardfacing pattern for cone crusher surfaces | |
| US4611765A (en) | Roller mill | |
| EP1511572A1 (en) | A wear part intended for a crusher and a method of manufacturing the same | |
| US5902685A (en) | Roll, method of producing a roll as well as material bed roll mill | |
| US6926215B2 (en) | Hammermill | |
| US20030146318A1 (en) | Roll crusher teeth having hard compact material inserts | |
| JP3147136B2 (en) | Vertical crusher | |
| KR102647299B1 (en) | Roller mill device and method of modification of roller mill device | |
| US5131601A (en) | Vertical impact crusher | |
| JP5258126B1 (en) | Hammer head, method of manufacturing the same, and crusher having the hammer head | |
| JP2536282Y2 (en) | Vertical crusher | |
| JP6765649B1 (en) | Hammer head | |
| JP5750139B2 (en) | Hammer head | |
| JPH02135160A (en) | Hardened build-up method of table liner for vertical pulverizing mill | |
| Oberheuser | Wear protection of surfaces from high pressure grinding rolls: possibilities and limits | |
| JPH0331408Y2 (en) | ||
| JPH0724342A (en) | Vertical grinder | |
| JP2021016859A (en) | Method for manufacturing hammer head and crusher provided with the hammer head | |
| CN218573814U (en) | Nozzle ring of reinforced medium-speed coal mill | |
| CN214439542U (en) | Wear-resisting scraper for pulverizer | |
| RU2177832C2 (en) | Cone grinder working tool | |
| JP2015051433A (en) | Hammer head and crush machine having hammer head | |
| EP4056281A1 (en) | Crusher rotor | |
| KR20050009212A (en) | Vertical mill and method for determining the shape of a crushing face |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |