JP2755338B2 - Crushing equipment - Google Patents

Crushing equipment

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Publication number
JP2755338B2
JP2755338B2 JP3263311A JP26331191A JP2755338B2 JP 2755338 B2 JP2755338 B2 JP 2755338B2 JP 3263311 A JP3263311 A JP 3263311A JP 26331191 A JP26331191 A JP 26331191A JP 2755338 B2 JP2755338 B2 JP 2755338B2
Authority
JP
Japan
Prior art keywords
classification
cylinder
vertical
raw
particles
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
JP3263311A
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Japanese (ja)
Other versions
JPH0515805A (en
Inventor
国男 武谷
Original Assignee
宇部興産株式会社
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Filing date
Publication date
Application filed by 宇部興産株式会社 filed Critical 宇部興産株式会社
Priority to JP3263311A priority Critical patent/JP2755338B2/en
Publication of JPH0515805A publication Critical patent/JPH0515805A/en
Application granted granted Critical
Publication of JP2755338B2 publication Critical patent/JP2755338B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明の粉砕設備は,ボールミル
などの仕上ミルの予備粉砕機として竪型粉砕機を使用す
るものであって,主としてセメントクリンカ,高炉スラ
グなど特に硬くて粉砕し難く,かつ,摩耗性の強い原料
を微粉砕する粉砕設備に関する。
BACKGROUND OF THE INVENTION The crushing equipment of the present invention uses a vertical crusher as a preliminary crusher for a finishing mill such as a ball mill, and is particularly hard, such as cement clinker and blast furnace slag, which is hard to crush. In addition, the present invention relates to a crushing apparatus for finely crushing a material having high abrasion.

【0002】[0002]

【従来の技術】石灰石や高炉スラグ,セメント原料など
の化学品を細かく粉砕し粉体とする粉砕機の一種とし
て,図3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2
A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 As one type of pulverizer for finely pulverizing chemicals such as limestone, blast furnace slag, and cement raw material into powder, as shown in FIG. 3, a vertical pulverizer having a rotary table and a pulverizing roller. 1 is widely used. This type of crusher has a motor 2 at the lower part of the cylindrical casing 15.
A, a disk-shaped rotary table 3A driven by the speed reducer 2 and rotated at a low speed, and a plurality of crushing rollers 4 driven to rotate by being hydraulically pressed against a portion equally dividing the outer peripheral portion of the upper surface in the circumferential direction. It has.

【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
られ原料層圧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
る回転セパレータ,16はガスと共に製品を取出す排出
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 on a casing 15 by a shaft 6 so that the crushing roller 4 is actuated. 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 for adjusting the layer pressure of the raw material, 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上を滑るときに回転テ
ーブル3Aにより回転方向の力を受け,回転テーブル3
Aとの間で滑って回転テーブル3Aの回転数よりいくら
か遅い回転を行なう。以上2つの力,すなわち,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3
A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. When a force in the rotating direction is received by the rotating table 3A,
A slides with A and makes a rotation somewhat slower than the rotation speed of the turntable 3A. The above two forces, that is, the force in the radial direction and the force in the rotational direction are synthesized, and the raw material is
A moves to the outer periphery of the turntable 3A in a spiral locus on A. Since a roller is pressed against this outer peripheral portion and rotated, 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 is caught. Rarely crushed.

【0005】一方,ケーシング15の基部にはダクトに
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部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1
5内を上昇し,上部に位置するセパレータ13の羽根1
3Aにより分級作用を受け,所定粒度の製品はガスと共
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 duct.
This gas blows up from the annular space 14 between the outer peripheral surface of the turntable 3A and the inner peripheral surface of the casing, so that the pulverized fine powder accompanies the gas and the casing 1
5, the blades 1 of the separator 13 located above.
The product having the predetermined particle size is subjected to the classification action by 3A, and is discharged together with the gas from the outlet 16 and sent to the next step.

【0006】近年粉砕原料の製品粒度への要求は年々高
まり,微粉砕あるいは超微粉砕と称されるように,益々
製品粒度の微細化が望まれるようになった。そこで単一
の粉砕機でその要求に応じることは困難になり,このた
め,たとえばボールミル等の仕上ミルに原料を投入する
前に予備粉砕機として竪型粉砕機を使用し,竪型粉砕機
の粉砕産物を振動篩でふるい分けして微粉のみを仕上ミ
ルへ供給する方法が採用されるようになった。図4はこ
の場合のフローシートを示し,原料ホッパ60の原料は
コンスタントフィード・ウェア70を経て,竪型粉砕機
1で粉砕され,産物はバケットエレベータ80を介して
振動篩90に導かれてスクリーニングされ,微粉のみ仕
上ミル(ボールミル)100で粉砕され,オーバサイズ
の産物は再び竪型粉砕機1で予備粉砕されるようになっ
ている。
[0006] In recent years, the demand for the product particle size of the pulverized raw material has been increasing year by year, and the finer product particle size has been more and more desired as referred to as fine pulverization or ultra-fine pulverization. Therefore, it is difficult to meet the demand with a single crusher. For this reason, for example, a vertical crusher is used as a preliminary crusher before charging the raw materials into a finishing mill such as a ball mill. A method has been adopted in which a crushed product is sieved with a vibrating sieve and only fine powder is supplied to a finishing mill. FIG. 4 shows a flow sheet in this case. The raw material of the raw material hopper 60 is pulverized by the vertical pulverizer 1 through the constant feedware 70, and the product is guided to the vibrating sieve 90 via the bucket elevator 80 for screening. Only the fine powder is pulverized by a finishing mill (ball mill) 100, and the oversized product is again pre-pulverized by the vertical pulverizer 1.

【0007】[0007]

【発明が解決しようとする課題】上に述べた予備粉砕お
よび本粉砕による2段粉砕では,予備粉砕の産物を振動
篩でふるい分けしており,篩のメインテナンスが問題と
なる。すなわち,たとえば,スラグを含有するセメント
クリンカの微粉砕を行なう場合など摩耗性の特に激しい
原料では,一般的に言って2〜3ケ月毎に振動篩の点検
と部品交換が必要となり,この取替え作業には数時間の
運転停止を余儀なくされ,運転休止による生産性の低下
が避けられなかった。また,原料の種類の変更や供給す
る原料の性状の変化(被粉砕性,含有水分)に応じて振
動篩のふるい分け分級点を気軽にしかも簡単に変更する
には振動篩では困難であった。
In the above-described two-stage pulverization by pre-pulverization and main pulverization, the pre-pulverized product is sieved with a vibrating sieve, and maintenance of the sieve becomes a problem. That is, for example, when the raw material is particularly abrasive, such as when finely pulverizing a cement clinker containing slag, it is generally necessary to inspect the vibrating sieve and replace parts every two to three months. Had to be shut down for several hours, which inevitably led to a drop in productivity due to downtime. Also, it is difficult to change the sieving classification point of the vibrating sieve easily and easily in accordance with the change of the type of raw material or the change of the properties of the raw material to be supplied (grindability, water content) with the vibrating sieve.

【0008】[0008]

【課題を解決するための手段】上に述べた課題を解決す
るため、本発明の粉砕設備においては、竪型粉砕機を予
備粉砕機として使用する粉砕設備であって、該竪型粉砕
機へ原料を供給する原料供給設備と竪型粉砕機と該竪型
粉砕機の粉砕産物の分級装置と分級後の粒子を粉砕する
仕上ミルと輸送装置を備え、該分級装置は垂直塔状の
粒分級回収用の筒体と中粒分級回収用の筒体を上端で連
通した2本組みの構成とするとともに、該両筒体のそれ
ぞれへ下方より上昇流の空気流れを形成して該粗粒分級
回収用の筒体の上方より原料を自由落下して分級する上
昇流型分級装置であり、かつ、該粗粒分級回収用の筒体
における分級後の粗粒を該竪型粉砕機へ戻して再粉砕
し、該中粒分級回収用の筒体における分級後の中粒を重
力による自由落下により該仕上ミルへ導く輸送経路を有
する粉砕設備とした。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a crushing apparatus of the present invention is a crushing apparatus using a vertical crusher as a preliminary crusher. with raw material supply equipment and vertical transport devices and finishing mill grinding classification apparatus and classification after particle grinder and該竪pulverizer grinding product to supply the raw material, the該分classifier vertical column-like crude
At the upper end, a cylinder for collecting and sorting medium and a cylinder for collecting and sorting medium
With the two sets of configuration through it of the both cylinder
A coarse air classification is performed by forming an upward air flow from below.
An ascending type classification device for freely falling and classifying a raw material from above a collecting cylinder , and a cylinder for collecting and separating the coarse particles.
The coarse particles after the classification in the above step are returned to the vertical grinder to re-pulverize, and the classified medium particles in the cylinder for collecting and separating the medium particles are weighted.
A grinding facility having a transport route leading to the finishing mill by free fall by force was used.

【0009】[0009]

【作用】本発明の粉砕設備は,予備粉砕機としての竪型
粉砕機と仕上ミルとの間に上昇流型分級装置を配設し,
垂直塔状の筒体に上昇流を形成してその上昇速度を任意
に設定し,上部より分級に供する竪型粉砕機の粉砕産物
を自然落下させ,粒子径によって終末沈降速度が異なる
ことを利用して分級点より大きい粒径の粒子は下方へ落
下させ,分級点以下の粒子を上昇させて上方に設けた排
出口より排出させる。このようにして分級後の微粒を仕
上ミルへ導き仕上粉砕するとともに,分級後の粗粒は竪
型粉砕機へ戻して再粉砕させるようにしている。この上
昇流型分級装置の分級点の制御は,筒体へ導く風量,す
なわち,上昇速度によって調節できるから遠隔操作で運
転中に任意に変更可能であり簡便である。
The crushing equipment of the present invention is provided with an upflow type classification device between a vertical crusher as a preliminary crusher and a finishing mill,
A rising flow is formed in a vertical tower-shaped cylinder, the rising speed is set arbitrarily, the pulverized products of a vertical pulverizer used for classification fall from the upper part, and the final sedimentation speed varies depending on the particle diameter. Then, particles having a particle diameter larger than the classification point are dropped downward, and particles below the classification point are raised and discharged from a discharge port provided above. In this way, the fine particles after classification are guided to a finishing mill for finish pulverization, and the coarse particles after classification are returned to a vertical pulverizer and reground. The control of the classification point of the upflow type classification device can be adjusted by the flow rate guided to the cylindrical body, that is, the rising speed, so that it can be arbitrarily changed during operation by remote control and is simple.

【0010】[0010]

【実施例】以下図面に基づいて本発明の実施例について
詳細に説明する。図1〜図2は本発明の粉砕設備の実施
例に係り,図1は粉砕設備のフローシート,図2は上昇
流型分級装置の縦断面図である。図において,60は原
料ホッパ,70はコンスタントフィード・ウェア,1は
竪型粉砕機,80はバケットエレベータ,110は上昇
流型分級装置,100は仕上ミル,120は集塵装置,
130は吸引ファンである。なお,竪型粉砕機1は従来
技術で説明したとおりのものであり,また,仕上ミル1
00はボールミルやロッドミルを使用する。集塵装置1
20にはバッグフィルタやサイクロン,電気集塵機が使
用される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 crushing equipment of the present invention, FIG. 1 is a flow sheet of the crushing equipment, and FIG. 2 is a longitudinal sectional view of an upflow type classification device. In the figure, 60 is a raw material hopper, 70 is a constant feed ware, 1 is a vertical crusher, 80 is a bucket elevator, 110 is an upflow classifier, 100 is a finishing mill, 120 is a dust collector,
130 is a suction fan. The vertical crusher 1 is as described in the prior art.
00 uses a ball mill or a rod mill. Dust collector 1
20 is a bag filter, a cyclone, or an electric dust collector.

【0011】図2に示すように,上昇流型分級装置11
0は,垂直筒状の筒体から形成される2本の隣接する筒
体(1次分級室)110a,筒体(2次分級室)11b
が上部に連通しており,各々の筒体110a,110b
にはそれぞれ下方より空気の取入口が設けられる。そし
て筒体110bの上部1端には含塵ガスの排出口が設け
られ,また筒体110a,110bの下方中央には粉粒
体の排出口が設けられている。そして,1次分級室であ
る筒体110aには2次分級室である筒体110bの上
昇流速vよりも大きな上昇流となる流速vとなるよ
うな風量を供給することで,1次分級室の筒体110a
には粗粒が落下し,2次分級室の筒体110bには中粒
が落下するとともに,終末沈降速度がv(m/se
c)以下の微粒は含塵ガス排出口より流体に随伴して集
塵装置120へ導かれる。110c,110dは筒体1
10aへの押込ファンおよび流量調整弁であり,同様に
110e,110fは筒体110bへの押込ファンおよ
び流量調整弁である。
As shown in FIG. 2, an upflow type classification device 11
0 denotes two adjacent cylinders (primary classification chamber) 110a and cylinders (secondary classification chamber) 11b formed from a vertical cylindrical cylinder.
Communicates with the upper part, and the respective cylinders 110a, 110b
Are provided with air intakes from below. A discharge port for dust-containing gas is provided at one upper end of the cylinder 110b, and a discharge port for powdery particles is provided at the lower center of the cylinders 110a and 110b. By supplying the air volume such that the flow velocity v 1 of the large rising flow than increasing the flow velocity v 2 of the cylindrical body 110b is a secondary classification chamber the tubular member 110a is a primary classification chamber, primary Classification room cylinder 110a
Coarse particles fall on the cylinder 110b, medium particles fall on the cylinder 110b of the secondary classification chamber, and the terminal sedimentation velocity is v 2 (m / sec).
c) The following fine particles are guided to the dust collecting device 120 along with the fluid from the dust-containing gas outlet. 110c and 110d are cylinders 1
A push-in fan to 10a and a flow control valve are provided. Similarly, 110e and 110f are a push-in fan to the cylinder 110b and a flow control valve.

【0012】以上のように構成された本発明の粉砕設備
においては,原料ホッパ60の原料がコンスタントフィ
ード・ウェア70を経由して予備粉砕機である竪型粉砕
機1に供給されて粉砕され,微粉は集塵装置120へ導
かれるとともに,粗粒は竪型粉砕機1の環状空間通路1
4より排出され,バケットエレベータ80を経由して上
昇流型分級装置110へ導入される。そして前記したよ
うに分級後の粗粒は竪型粉砕機1へ戻され再粉砕され,
微粒は集塵装置120へ向かい,中粒(中間粒子)が仕
上ミル100へ導入されて仕上ミル100で粉砕され
る。なお,仕上ミル100の下流には図示しないサイク
ロンセパレータが設けられるとともに,サイクロンセパ
レータ分級後の微粉は最終製品となり分級点より粗い粗
粒は再び仕上ミル100へ戻すクローズド・サーキット
(閉回路)が形成されるよう構成される。図1では,集
塵装置120で捕集した粉末はそのまま最終製品とする
こともできるが,まだ所望の粒度に至っていない場合に
は仕上ミル100へ戻してもよい。
In the pulverizing equipment of the present invention configured as described above, the raw material of the raw material hopper 60 is supplied to the vertical pulverizer 1 as a preliminary pulverizer through the constant feedware 70 and pulverized. The fine powder is guided to the dust collector 120, and the coarse particles are collected in the annular space passage 1 of the vertical mill 1.
4 and is introduced into the upflow classifier 110 via the bucket elevator 80. Then, as described above, the coarse particles after classification are returned to the vertical pulverizer 1 and re-pulverized.
The fine particles are directed to the dust collector 120, and the medium particles (intermediate particles) are introduced into the finishing mill 100 and pulverized by the finishing mill 100. In addition, a cyclone separator (not shown) is provided downstream of the finishing mill 100, and the fine powder after the cyclone separator classification becomes a final product, and a coarse circuit coarser than the classification point is returned to the finishing mill 100 to form a closed circuit (closed circuit). It is configured to be. In FIG. 1, the powder collected by the dust collecting device 120 can be used as a final product as it is, but may be returned to the finishing mill 100 if the desired particle size has not yet been reached.

【0013】本発明の粉砕設備に採用される上昇流型分
級装置では,分級原理が粒径毎に異なる終末沈降速度の
差によって粒子を分別するものであるから,分級点は非
常にシャープであるが,そのためには粒子の供給が過大
でなく,かつ,筒体内部に均等に分散し,筒体各部の粒
子濃度が自由な分別沈降の可能な程度に小さいことが必
要である。しかしながら,上昇流型分級装置110は最
終製品の分級点を規制するものではなく,予備粉砕後の
粉砕産物のうち粗粒のみを仕上ミル100へ供給しない
ためのものであるからそれほど神経質な管理は必要とし
ないので,本発明の粉砕設備の要求度に十分マッチした
安価な装置ということができる。また,原料の変更や供
給原料の粉砕性状の変化に応じて,仕上ミル100へ供
給する微粒の分級点を変更したいときには風量を変更す
るだけであるから簡便に遠隔操作で運転中に調節可能で
ある。
[0013] In the upflow type classification device employed in the pulverizing equipment of the present invention, the classification point is very sharp because the classification principle is to separate the particles by the difference in terminal sedimentation velocity which differs for each particle size. However, for that purpose, it is necessary that the supply of particles is not excessive, and that the particles are uniformly dispersed inside the cylinder, and the particle concentration in each part of the cylinder is small enough to allow free sedimentation and sedimentation. However, the ascending flow classifier 110 does not regulate the classification point of the final product, and does not supply only the coarse particles among the pulverized products after the preliminary pulverization to the finishing mill 100. Since it is not necessary, it can be said that it is an inexpensive apparatus that sufficiently matches the requirement of the crushing equipment of the present invention. In addition, when it is desired to change the classification point of the fine particles supplied to the finishing mill 100 in accordance with the change of the raw material or the change of the crushing property of the supplied raw material, it is only necessary to change the air volume. is there.

【0014】[0014]

【発明の効果】以上説明したように,本発明の粉砕設備
においては,予備粉砕後の粉砕産物の選別に上昇流型分
級装置を採用したので,機器内の摩耗はほとんど無く,
振動篩を採用した場合のように2〜3ケ月毎の短期間の
点検や部品交換およびそれに伴なる生産性阻害要因が排
除され,著しくメインテナンス性が向上するとともに運
転操作性が改善される。そのほか,設備費も安価であ
り,仕上ミルの第1室の粉砕媒体であるスチールボール
の小径化も可能となるから粉砕効率が向上するとともに
ランニングコストの低減も図ることができる。
As described above, in the crushing equipment of the present invention, the upflow type classification device for selecting the crushed product after the preliminary crushing is employed, so that there is almost no wear in the equipment.
As in the case of using a vibrating sieve, short-term inspection and replacement of parts every two to three months and a factor that impairs productivity associated therewith are eliminated, thereby significantly improving maintainability and driving operability. In addition, the equipment cost is low, and the diameter of the steel ball, which is the grinding medium in the first chamber of the finishing mill, can be reduced, so that the grinding efficiency can be improved and the running cost can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の粉砕設備の実施例を示すフローシート
である。
FIG. 1 is a flow sheet showing an embodiment of the crushing equipment of the present invention.

【図2】本発明の粉砕設備に採用される上昇流型分級装
置の実施例を示す縦断面図である。
FIG. 2 is a longitudinal sectional view showing an embodiment of an upflow type classification device employed in the crushing equipment of the present invention.

【図3】従来の竪型粉砕機の全体縦断面図である。FIG. 3 is an overall vertical sectional view of a conventional vertical crusher.

【図4】従来の粉砕設備のフローシートである。FIG. 4 is a flow sheet of a conventional crushing equipment.

【符号の説明】[Explanation of symbols]

1 竪型粉砕機 60 原料ホッパ 70 コンスタントフィード・ウェア 80 バケットエレベータ 90 振動篩 100 仕上ミル 110 上昇流型分級装置 110a 筒体 110b 筒体 110c 押込ファン 110d 流量調整弁 110e 押込ファン 110f 流量調整弁 120 集塵装置 130 吸引ファン DESCRIPTION OF SYMBOLS 1 Vertical grinder 60 Raw material hopper 70 Constant feed wear 80 Bucket elevator 90 Vibrating sieve 100 Finishing mill 110 Upflow type classification device 110a Cylindrical body 110b Cylindrical body 110c Push-in fan 110d Flow control valve 110e Push-in fan 110f Flow control valve 120 Collection Dust device 130 Suction fan

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 竪型粉砕機を予備粉砕機として使用する
粉砕設備であって、該竪型粉砕機へ原料を供給する原料
供給設備と竪型粉砕機と該竪型粉砕機の粉砕産物の分級
装置と分級後の粒子を粉砕する仕上ミルと輸送装置を備
え、該分級装置は垂直塔状の粗粒分級回収用の筒体と中
粒分級回収用の筒体を上端で連通した2本組みの構成と
するとともに、該両筒体のそれぞれへ下方より上昇流の
空気流れを形成して該粗粒分級回収用の筒体の上方より
原料を自由落下して分級する上昇流型分級装置であり、
かつ、該粗粒分級回収用の筒体における分級後の粗粒を
該竪型粉砕機へ戻して再粉砕し、該中粒分級回収用の筒
体における分級後の中粒を重力による自由落下により
仕上ミルへ導く輸送経路を有する粉砕設備。
1. A crushing equipment using a vertical crusher as a preliminary crusher, comprising a raw material supply equipment for supplying raw materials to the vertical crusher, a vertical crusher, and a crushed product of the vertical crusher. A classifier, a finishing mill for crushing the classified particles , and a transport device are provided. The classifier is a vertical tower-shaped cylinder for coarse particle classification and collection.
A two-pack configuration in which a cylinder for particle classification and collection is communicated at the upper end
And an ascending flow classifier that forms an airflow of an ascending flow from below to each of the two cylinders and freely falls and classifies the raw material from above the cylinder for coarse-grain classification and collection ,
In addition, the coarse particles after classification in the cylinder for coarse-grain classification and recovery are returned to the vertical grinder and crushed again, and the cylinder for medium- grain classification and collection is recovered.
A pulverizing facility having a transport route for guiding the medium- sized particles in the body to the finishing mill by free fall due to gravity .
JP3263311A 1991-07-09 1991-07-09 Crushing equipment Expired - Lifetime JP2755338B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3263311A JP2755338B2 (en) 1991-07-09 1991-07-09 Crushing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3263311A JP2755338B2 (en) 1991-07-09 1991-07-09 Crushing equipment

Publications (2)

Publication Number Publication Date
JPH0515805A JPH0515805A (en) 1993-01-26
JP2755338B2 true JP2755338B2 (en) 1998-05-20

Family

ID=17387719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3263311A Expired - Lifetime JP2755338B2 (en) 1991-07-09 1991-07-09 Crushing equipment

Country Status (1)

Country Link
JP (1) JP2755338B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4269257B2 (en) * 2003-05-28 2009-05-27 宇部興産機械株式会社 Grinding method
JP2006231125A (en) * 2005-02-22 2006-09-07 Chubu Electric Power Co Inc Manufacturing system of shell powder
JP4654171B2 (en) * 2006-09-28 2011-03-16 Jx日鉱日石金属株式会社 Ball milling method for copper smelting solvent
JP4473296B2 (en) 2007-09-12 2010-06-02 パンパシフィック・カッパー株式会社 Nonferrous metal smelter operation method
CN102009041B (en) * 2010-10-13 2012-10-10 天津精华石化有限公司 Wind powder-selecting system for column mill
JP5794726B2 (en) * 2011-02-14 2015-10-14 月島機械株式会社 Coal boiler equipment and operation method of coal boiler equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH041660B2 (en) * 1984-07-26 1992-01-13 Mitsubishi Heavy Ind Ltd
JPH02277561A (en) * 1989-04-19 1990-11-14 Mitsubishi Heavy Ind Ltd Grinder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"工業操作シリーズ・17 粉粒体の分級・選別編",株式会社化学工業社,昭和53年10月1日,p.16−17

Also Published As

Publication number Publication date
JPH0515805A (en) 1993-01-26

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