JP2001340780A - Classification control method for vertical mill - Google Patents
Classification control method for vertical millInfo
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- JP2001340780A JP2001340780A JP2000165675A JP2000165675A JP2001340780A JP 2001340780 A JP2001340780 A JP 2001340780A JP 2000165675 A JP2000165675 A JP 2000165675A JP 2000165675 A JP2000165675 A JP 2000165675A JP 2001340780 A JP2001340780 A JP 2001340780A
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- Prior art keywords
- powder
- powder concentration
- suction
- classification
- vertical mill
- Prior art date
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- Combined Means For Separation Of Solids (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粉砕機と分級機が
一体化された竪型ミルの分級制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a classification control method for a vertical mill in which a crusher and a classifier are integrated.
【０００２】[0002]
【従来の技術】図２は、竪型ミル（竪型粉砕機）の一例
を示す模式図である。この図において、１はケーシン
グ、２は原料投入シュート、４は回転駆動装置、５は粉
砕テーブル、６は粉砕溝、７は圧下装置、８はブラケッ
ト、９は粉砕ローラ、１１は吹き出しポート、１５は微
粉ダクト、２１は分級装置である。2. Description of the Related Art FIG. 2 is a schematic view showing an example of a vertical mill (vertical crusher). In this figure, 1 is a casing, 2 is a raw material feeding chute, 4 is a rotary driving device, 5 is a crushing table, 6 is a crushing groove, 7 is a pressing down device, 8 is a bracket, 9 is a crushing roller, 11 is a blowing port, 15 Denotes a fine powder duct, and 21 denotes a classification device.
【０００３】かかる竪型ミルにおいて、粉砕する粉砕原
料３（例えばセメント原料や塗料等に用いられる炭酸カ
ルシウム）が、ケーシング１内に挿入された原料投入シ
ュート２からの供給される。粉砕テーブル５は回転駆動
装置４により回転駆動され、その上面周方向に粉砕溝６
が形成されている。粉砕ローラ９が、圧下装置７に連結
されたブラケット８に支持されて粉砕溝６に圧接され、
粉砕テーブル５に追従して回転して粉砕ローラ９との間
で粉砕原料３を粉砕する。複数の吹き出しポート１１
は、粉砕テーブル５の外周を囲むように環状に配設さ
れ、粉砕によって生じた微粉１０及び粗粉１０′を搬送
空気１２により吹き上げる。分級装置２１は、その上部
に設けられ微粉１０と粗粉１０′とに分離し、微粉１０
は頂部に設けた微粉ダクト１５より製品として送り出
し、粗粉１０′は粉砕テーブル５に戻すようになってい
る。In such a vertical mill, a pulverizing raw material 3 to be pulverized (for example, calcium carbonate used for a cement raw material or a paint) is supplied from a raw material charging chute 2 inserted into a casing 1. The pulverizing table 5 is rotationally driven by the rotary drive unit 4 and has a pulverizing groove 6
Are formed. The crushing roller 9 is supported by the bracket 8 connected to the pressing-down device 7 and pressed against the crushing groove 6,
The crushing raw material 3 is crushed between the crushing roller 9 and the crushing material 3 by rotating following the crushing table 5. Multiple outlet ports 11
Are arranged annularly so as to surround the outer periphery of the pulverizing table 5, and blow up the fine powder 10 and the coarse powder 10 ′ generated by the pulverization by the carrier air 12. The classifier 21 is provided at an upper portion thereof, and separates the fine powder 10 and the coarse powder 10 ′ into fine powder 10 and coarse powder 10 ′.
Is sent out as a product from a fine powder duct 15 provided at the top, and coarse powder 10 ′ is returned to the crushing table 5.
【０００４】分級装置２１は、外周部に複数の分級羽根
１４を備えた回転式の分級ロータ１３と、この分級ロー
タ１３の下方位置にホッパ状に形成されたセパレータ１
６とにより構成され、搬送空気１２により吹き上げられ
た微粉１０及び粗粉１０′をセパレータ１６に設けたス
リット１６ａを通して上方の分級ロータ１３に導き、分
級ロータ１３の分級羽根１４により弾かれた粗粉１０′
をセパレータ１６の上面に沿って滑落させ、セパレータ
１６の下端に形成された戻し口２４から粉砕テーブル５
の中央部に戻すようにしてある。A classifying device 21 includes a rotary classifying rotor 13 having a plurality of classifying blades 14 on its outer periphery, and a hopper-shaped separator 1 below the classifying rotor 13.
The fine powder 10 and the coarse powder 10 ′ blown up by the carrier air 12 are guided to the upper classification rotor 13 through the slit 16 a provided in the separator 16, and the coarse powder repelled by the classification blade 14 of the classification rotor 13. 10 '
Is slid down along the upper surface of the separator 16, and the grinding table 5 is returned from a return port 24 formed at the lower end of the separator 16.
To return to the center.
【０００５】[0005]
【発明が解決しようとする課題】上述した竪型ミルにお
いて、粉砕によって生じた微粉１０（製品）は、微粉ダ
クト１５に連結された吸引ファン（図示せず）によって
搬送空気１２に同伴させて吸引され、図示しない集塵装
置（例えばサイクロンセパレータやバグフィルタ）によ
り製品サイロ内に回収される。また、回転式の分級ロー
タ１３の回転速度は、その回転駆動装置１９の速度制御
（例えば周波数制御）により制御される。In the vertical mill described above, the fine powder 10 (product) generated by the pulverization is sucked by the suction air (not shown) connected to the fine powder duct 15 by being accompanied by the carrier air 12. Then, the dust is collected in a product silo by a dust collector (not shown) (for example, a cyclone separator or a bag filter). The rotation speed of the rotary classifying rotor 13 is controlled by speed control (for example, frequency control) of the rotation driving device 19.
【０００６】竪型ミルにおいて、回収された微粉１０の
粒度は製品の品質として最も重要であり、例えば、セメ
ント原料の場合「８８μｍ通過が９０％以上」、炭酸カ
ルシウムの場合「４５μｍ通過が９９％以上」等と評価
される。またこのような粒度と併用して比表面積で評価
する場合もある。In a vertical mill, the particle size of the recovered fine powder 10 is most important as the quality of the product. For example, in the case of a cement raw material, "90% or more passes through 88 μm", and in the case of calcium carbonate, "99% passes through 45 μm". Etc. " In some cases, the specific surface area is evaluated in combination with such a particle size.
【０００７】従来、目標とする粒度の微粉を得るため
に、上述した吸引ファンの風量と分級ロータ１３の回転
速度を制御していた。すなわち、回収された微粉１０を
一定時間（例えば１時間）毎にサンプリングし、その粒
度を計測して、吸引ファンの風量と分級ロータ１３の回
転速度を調整していた。しかし、この分級制御方法で
は、粒度計測に時間がかかかるため、結果としてサンプ
リングからそのデータに基ずくフィードバックまでに約
２時間の遅れ（タイムラグ）が生じ、その間のミル処理
量（数１０トンに達する）が不良品となる問題点があっ
た。Conventionally, in order to obtain a fine powder having a target particle size, the air volume of the suction fan and the rotation speed of the classification rotor 13 have been controlled. That is, the collected fine powder 10 is sampled at regular intervals (for example, every one hour), the particle size is measured, and the air volume of the suction fan and the rotation speed of the classification rotor 13 are adjusted. However, in this classification control method, it takes a long time to measure the particle size, and as a result, a delay (time lag) of about 2 hours occurs between the sampling and the feedback based on the data, and the mill processing amount during that time (to several tens tons). Reached), but there was a problem that it became a defective product.
【０００８】また、竪型ミルの圧力損失や粉砕動力等に
より吸引ファンの吸込み風量を制御する分級制御方法を
採用する場合もあった。しかし、この方法によっても、
圧力損失が一定になるまでの時間が長く、同様にタイム
ラグが大きく、大量の不良品が発生する問題点があっ
た。更に、この場合、圧力検出口のつまり等による障害
も多く、かつ、粉砕動力は瞬時の動力変動が大きく安定
値を得ることが難しかった。In some cases, a classification control method for controlling the suction air volume of a suction fan based on the pressure loss of a vertical mill, crushing power, and the like has been adopted. However, even with this method,
There is a problem in that the time until the pressure loss becomes constant is long, the time lag is also large, and a large number of defective products are generated. Further, in this case, there are many obstacles due to clogging of the pressure detection port and the like, and the crushing power has a large instantaneous power fluctuation, making it difficult to obtain a stable value.
【０００９】本発明は、かかる問題点を解決するために
創案されたものである。すなわち、本発明の目的は、粉
砕品の品質をタイムラグなく制御することができ、これ
により不良品の発生量を大幅に低減することができる竪
型ミルの分級制御方法を提供することにある。The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a vertical mill classification control method that can control the quality of a pulverized product without a time lag, thereby greatly reducing the amount of defective products.
【００１０】[0010]
【課題を解決するための手段】粉砕品の品質に直接影響
を与えるのは粉砕機内部で循環しているダスト（粉体）
の濃度である。すなわち原料の供給量や粉砕装置の運転
状態が一定の場合には、分級装置で分級される細粒の粒
度は、粉体濃度と直接関係し、粉体濃度が高いほど分級
後の粒度は細かくなり、逆に粉体濃度が低いほど分級後
の粒度は粗くなる。本発明はかかる新規の知見に基づく
ものである。The dust (powder) circulating inside the pulverizer directly affects the quality of the pulverized product.
Is the concentration of That is, when the supply amount of the raw material and the operation state of the crusher are constant, the particle size of the fine particles classified by the classifier is directly related to the powder concentration, and the higher the powder concentration, the finer the particle size after classification. Conversely, the lower the powder concentration, the coarser the particle size after classification. The present invention is based on such a new finding.
【００１１】すなわち、本発明によれば、搬送ガスに同
伴された粉砕後の粉体を微粉と粗粉に分級する回転式の
分級装置（２１）と、該分級装置で分級された微粒を含
む搬送ガスを吸引する吸引装置（２６）とを備えた竪型
ミルの分級制御方法であって、更に、分級前の搬送ガス
の粉体濃度をリアルタイムに検出する粉体濃度検出装置
（２８）を備え、検出された粉体濃度Ｐに応じて分級装
置の回転速度Ｎ及び／又は吸引装置の吸引風量Ｑを制御
する、ことを特徴とする竪型ミルの分級制御方法が提供
される。That is, according to the present invention, there is provided a rotary classifier (21) for classifying the pulverized powder entrained by the carrier gas into fine powder and coarse powder, and fine particles classified by the classifier. A classification control method for a vertical mill provided with a suction device (26) for sucking a carrier gas, further comprising a powder concentration detection device (28) for detecting the powder concentration of the carrier gas before classification in real time. A method for controlling the classification of a vertical mill, wherein the rotation speed N of the classification device and / or the suction air volume Q of the suction device is controlled in accordance with the detected powder concentration P.
【００１２】本発明の方法によれば、粉体濃度検出装置
（２８）により粉砕品の品質に直接影響する分級前の搬
送ガスの粉体濃度Ｐをリアルタイムに検出することがで
きる。また、検出した粉体濃度Ｐに応じて分級装置の回
転速度Ｎ及び／又は吸引装置の吸引風量Ｑを制御するの
で、タイムラグなく粉体濃度Ｐをほぼ一定に制御するこ
とができ、これにより不良品の発生量を大幅に低減する
ことができる。According to the method of the present invention, the powder concentration P of the carrier gas before classification, which directly affects the quality of the pulverized product, can be detected in real time by the powder concentration detection device (28). In addition, since the rotation speed N of the classifier and / or the suction air volume Q of the suction device are controlled in accordance with the detected powder concentration P, the powder concentration P can be controlled to be substantially constant without a time lag. The amount of non-defective products can be greatly reduced.
【００１３】本発明の好ましい実施形態によれば、粉砕
する粉体に応じて、分級装置の回転速度Ｎ及び吸引装置
の吸引風量Ｑの適用範囲と前記粉体濃度Ｐの最適値を予
め設定し、検出された粉体濃度Ｐが最適値より低い場合
には、前記適用範囲内で回転速度Ｎの増加及び／又は吸
引風量Ｑの低減を行い、粉体濃度Ｐが最適値より高い場
合には、前記適用範囲内で回転速度Ｎの低下及び／又は
吸引風量Ｑの増加を行う。According to a preferred embodiment of the present invention, the application range of the rotation speed N of the classifier and the suction air volume Q of the suction device and the optimum value of the powder concentration P are preset in accordance with the powder to be ground. If the detected powder concentration P is lower than the optimum value, the rotation speed N and / or the suction air flow Q is reduced within the applicable range, and if the powder concentration P is higher than the optimum value, The rotation speed N is reduced and / or the suction air volume Q is increased within the applicable range.
【００１４】この方法により、粉砕する粉体（例えば、
セメント原料、炭酸カルシウム）の粉砕に適した分級装
置の回転速度Ｎと吸引装置の吸引風量Ｑの適用範囲を予
め設定するので、この範囲で安定して分級装置と吸引装
置を運転することができる。また、所望の粒度が得られ
る粉体濃度Ｐを最適値として予め設定するので、この最
適値に付近に粉体濃度を維持することにより、所望の分
級粒度を安定して得ることができる。更に、検出された
粉体濃度Ｐが最適値より低い場合には、前記適用範囲内
で回転速度Ｎの増加及び／又は吸引風量Ｑの低減を行
い、粉体濃度Ｐが最適値より高い場合には、前記適用範
囲内で回転速度Ｎの低下及び／又は吸引風量Ｑの増加を
行うことにより、前述した知見に基づき、ほぼ一定の粉
体濃度Ｐを維持することができる。According to this method, the powder to be ground (for example,
Since the application range of the rotation speed N of the classification device and the suction air volume Q of the suction device suitable for the pulverization of the cement raw material and calcium carbonate) is preset, the classification device and the suction device can be operated stably within this range. . Further, since the powder concentration P at which a desired particle size is obtained is preset as an optimum value, by maintaining the powder concentration near this optimum value, a desired classified particle size can be obtained stably. Further, when the detected powder concentration P is lower than the optimum value, the rotation speed N and / or the suction air volume Q are reduced within the applicable range, and when the powder concentration P is higher than the optimum value, By reducing the rotation speed N and / or increasing the suction air volume Q within the applicable range, it is possible to maintain a substantially constant powder concentration P based on the above-described knowledge.
【００１５】前記粉体濃度検出装置（２８）は、電子式
粉体濃度測定器であることが好ましい。また、前記粉体
濃度検出装置（２８）は、光学式粉体濃度測定器である
ことが好ましい。すなわち、例えばレーザ光を用いてそ
の入射光と反射光から粉体濃度を検出できる電子式かつ
光学式の粉体濃度測定器が実用化されており、これを用
いてリアルタイムに瞬時に粉体濃度を検出し、分級装置
の回転速度Ｎ及び／又は吸引装置の吸引風量Ｑにフィー
ドバックすることができる。Preferably, the powder concentration detecting device (28) is an electronic powder concentration measuring device. Further, it is preferable that the powder concentration detecting device (28) is an optical powder concentration measuring device. That is, for example, an electronic and optical powder concentration measuring device capable of detecting the powder concentration from the incident light and the reflected light using laser light has been put into practical use. Can be detected and fed back to the rotation speed N of the classification device and / or the suction air volume Q of the suction device.
【００１６】[0016]
【発明の実施の形態】以下、本発明の好ましい実施形態
を図面を参照して説明する。なお、各図において共通す
る部分には同一の符号を付し、重複した説明を省略す
る。図１は、本発明の方法を実施するための竪型ミルの
全体構成図である。この図に示すように、本発明の方法
を実施するための竪型ミルは、搬送ガス１２に同伴され
た粉砕後の粉体を微粉１０と粗粉１０′に分級する回転
式の分級装置２１と、分級装置２１で分級された微粒１
０を含む搬送ガス１２を吸引する吸引装置２６とを備え
る。また、この竪型ミルは、更に、分級前の搬送ガス１
２の粉体濃度をリアルタイムに検出する粉体濃度検出装
置２８を備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In addition, the same reference numerals are given to the common parts in the respective drawings, and the duplicate description will be omitted. FIG. 1 is an overall configuration diagram of a vertical mill for carrying out the method of the present invention. As shown in this figure, a vertical mill for carrying out the method of the present invention comprises a rotary classifier 21 for classifying the pulverized powder entrained by the carrier gas 12 into fine powder 10 and coarse powder 10 '. And fine particles 1 classified by the classification device 21
And a suction device 26 for sucking the carrier gas 12 including zero. In addition, this vertical mill further includes a carrier gas 1 before classification.
2 is provided with a powder concentration detecting device 28 for detecting the powder concentration in real time.
【００１７】分級装置２１は、回転式の分級ロータ１３
を有し、この分級ロータ１３は、回転駆動装置１９で回
転駆動される。更にこの回転駆動装置１９は、分級機制
御装置２２により速度制御される。The classifying device 21 includes a rotary classifying rotor 13.
The classifying rotor 13 is rotatably driven by a rotary driving device 19. Further, the speed of the rotation drive device 19 is controlled by a classifier control device 22.
【００１８】吸引装置２６は、例えば吸引ブロアであ
る。この吸引ブロアは、制御装置３０によりその風量を
制御される。なお、この風量制御は、吸引ブロアの回転
速度を制御しても、その上流側に設けた図示しない吸込
み風量調整用ダンパの開度を変化させてもよい。The suction device 26 is, for example, a suction blower. The air volume of the suction blower is controlled by the control device 30. In this air volume control, the rotation speed of the suction blower may be controlled, or the opening of a suction air volume adjustment damper (not shown) provided upstream thereof may be changed.
【００１９】微粉ダクト１５と吸引装置２６の間には集
塵装置２３（例えば、サイクロンセパレータやバグフィ
ルタ）が設置され、搬送ガス１２に同伴された微粉１０
を製品サイロ内（図示せず）等に回収するようになって
いる。A dust collector 23 (for example, a cyclone separator or a bag filter) is provided between the fine powder duct 15 and the suction device 26, and the fine powder 10 entrained by the carrier gas 12 is provided.
Is collected in a product silo (not shown) or the like.
【００２０】粉体濃度検出装置２８は、電子式粉体濃度
測定器又は光学式粉体濃度測定器である。例えば、例え
ばレーザ光を用いてその入射光と反射光から粉体濃度を
検出できる電子式かつ光学式の粉体濃度測定器が実用化
されており、これを適用することができる。なお、この
例では、粉体濃度検出装置２８は、検出部２８ａと本体
２８ｂとからなり、検出部２８ａで検出した濃度信号を
本体２８ｂで電気信号に変換し、制御装置３０に入力す
る。The powder concentration detecting device 28 is an electronic powder concentration measuring device or an optical powder concentration measuring device. For example, an electronic and optical powder concentration measuring device capable of detecting the powder concentration from the incident light and the reflected light using, for example, laser light has been put to practical use, and this can be applied. In this example, the powder concentration detection device 28 includes a detection unit 28a and a main body 28b, and converts the concentration signal detected by the detection unit 28a into an electric signal in the main body 28b and inputs the electric signal to the control device 30.
【００２１】制御装置３０は、分級機制御装置２２と吸
引装置２６を制御する。以下、制御装置３０による分級
機制御装置２２と吸引装置２６の制御内容を説明する。The control device 30 controls the classifier control device 22 and the suction device 26. Hereinafter, control contents of the classifier control device 22 and the suction device 26 by the control device 30 will be described.
【００２２】表１は、分級装置の回転速度Ｎ及び吸引装
置の吸引風量Ｑと粉砕機内の粉体濃度Ｐとの関係を示し
たものである。Table 1 shows the relationship between the rotation speed N of the classification device, the suction air volume Q of the suction device, and the powder concentration P in the pulverizer.
【００２３】[0023]
【表１】 [Table 1]
【００２４】表１のように粉体濃度と分級機回転速度及
び吸引風量との間には一定の関係がある。この関係は、
粉砕する粉体の種類により相違するが、同一の粉体で
は、原料の供給量や粉砕装置の運転状態を一定にする限
り、同一の関係が維持されることが経験的に知られてい
る。従って、目標とされる粉体製造品質に対応した濃度
になるように分級機回転速度及び吸引風量を制御すれば
一定の品質の粉体が得られることになる。As shown in Table 1, there is a certain relationship between the powder concentration, the rotation speed of the classifier, and the amount of suction air. This relationship is
It is empirically known that the same relationship is maintained for the same powder as long as the supply amount of the raw material and the operating state of the crushing device are kept constant, although it differs depending on the type of powder to be crushed. Therefore, if the classifier rotation speed and the suction air volume are controlled so as to have a concentration corresponding to the target powder production quality, a powder of constant quality can be obtained.
【００２５】すなわち、本発明の方法では、粉砕する粉
体に応じて、分級装置の回転速度Ｎ及び吸引装置の吸引
風量Ｑの適用範囲と前記粉体濃度Ｐの最適値を予め設定
し、検出された粉体濃度Ｐが最適値より低い場合には、
前記適用範囲内で回転速度Ｎの増加及び／又は吸引風量
Ｑの低減を行い、粉体濃度Ｐが最適値より高い場合に
は、前記適用範囲内で回転速度Ｎの低下及び／又は吸引
風量Ｑの増加を行う。言い換えれば、製造すべき粉体製
品毎にミル内粉体濃度を決めておき、この値になるよう
に分級機回転速度の増減、吸引ファンの回転数もしくは
ファン上流の吸込み風量調整用ダンパの開度変化を粉体
濃度信号にて制御する。That is, in the method of the present invention, the application range of the rotation speed N of the classifier and the suction air volume Q of the suction device and the optimum value of the powder concentration P are set in advance in accordance with the powder to be pulverized. If the obtained powder concentration P is lower than the optimum value,
The rotation speed N is increased and / or the suction air volume Q is reduced within the application range. When the powder concentration P is higher than the optimum value, the rotation speed N and / or the suction air volume Q is reduced within the application range. Do an increase. In other words, the powder concentration in the mill is determined for each powder product to be manufactured, the rotational speed of the classifier is increased / decreased, and the rotation speed of the suction fan or the opening of the damper for adjusting the suction air flow upstream of the fan is adjusted to this value. The degree change is controlled by the powder concentration signal.
【００２６】この方法により、粉体濃度検出装置２８に
より粉砕品の品質に直接影響する分級前の搬送ガスの粉
体濃度Ｐをリアルタイムに検出することができる。ま
た、検出した粉体濃度Ｐに応じて分級装置の回転速度Ｎ
及び／又は吸引装置の吸引風量Ｑを制御するので、タイ
ムラグなく粉体濃度Ｐをほぼ一定に制御することがで
き、これにより不良品の発生量を大幅に低減することが
できる。また製造される粉体品質特に粒度に対応した粉
体濃度を知りうることにより多品種生産時の分級機回転
数と吸引ファン風量もしくはその１つを制御し、生産品
目の多様化が可能となる。According to this method, the powder concentration P of the carrier gas before classification, which directly affects the quality of the pulverized product, can be detected by the powder concentration detecting device 28 in real time. Further, according to the detected powder concentration P, the rotation speed N
In addition, since the amount of suction air Q of the suction device is controlled, the powder concentration P can be controlled to be substantially constant without a time lag, and thus the amount of defective products can be significantly reduced. Also, knowing the quality of the powder to be produced, especially the powder concentration corresponding to the particle size, controls the number of rotations of the classifier and / or the air flow rate of the suction fan during multi-product production, and diversifies the production items. .
【００２７】なお、本発明は上述した実施形態に限定さ
れず、本発明の要旨を逸脱しない範囲で種々変更できる
ことは勿論である。It should be noted that the present invention is not limited to the above-described embodiment, but can be variously changed without departing from the gist of the present invention.
【００２８】[0028]
【発明の効果】上述したように、本発明の方法では粉砕
機内部の粉体濃度を直接的に知り得ることにより安定品
質をもった製品を得られる。また、原料の変化（硬い、
軟らかい、又は水分の量）に応じた粉体濃度にもすぐに
対応できる。すなわち、本発明の竪型ミルの分級制御方
法は、粉砕品の品質をタイムラグなく制御することがで
き、これにより不良品の発生量を大幅に低減することが
できる等の優れた効果を有する。As described above, in the method of the present invention, a product having stable quality can be obtained by directly knowing the powder concentration inside the pulverizer. Also, changes in raw materials (hard,
It is possible to immediately respond to the powder concentration depending on the softness or the amount of water. That is, the classification control method for a vertical mill according to the present invention has excellent effects such that the quality of the pulverized product can be controlled without a time lag, and the amount of defective products can be greatly reduced.
【図１】本発明の方法を実施するための竪型ミルの全体
構成図である。FIG. 1 is an overall configuration diagram of a vertical mill for performing a method of the present invention.
【図２】従来の竪型ミルの全体構成図である。FIG. 2 is an overall configuration diagram of a conventional vertical mill.
１ ケーシング、２ 原料投入シュート、３ 粉砕原
料、４ 回転駆動装置、５ 粉砕テーブル、６ 粉砕
溝、７ 圧下装置、８ ブラケット、９ 粉砕ローラ、
１０ 微粉、１０′粗粉、１１ 吹き出しポート、１２
搬送空気、１３分級ロータ、１４ 分級羽根、１５
微粉ダクト、１６ セパレータ、１９ 回転駆動装置、
２１ 分級装置、２２ 分級機制御装置、２３ 集塵装
置、２６吸引装置（吸引ブロア）、２８ 粉体濃度検出
装置、２８ａ 検出部、２８ｂ本体、３０ 制御装置DESCRIPTION OF SYMBOLS 1 Casing, 2 raw material input chute, 3 crushed raw material, 4 rotary drive device, 5 crushing table, 6 crushing groove, 7 pressure reduction device, 8 bracket, 9 crushing roller
10 fine powder, 10 'coarse powder, 11 blowing port, 12
Conveying air, 13 class rotor, 14 class blade, 15
Fine powder duct, 16 separator, 19 rotary drive,
21 classifier, 22 classifier controller, 23 dust collector, 26 suction device (suction blower), 28 powder concentration detector, 28a detector, 28b body, 30 controller
Claims (4)
粉と粗粉に分級する回転式の分級装置（２１）と、該分
級装置で分級された微粒を含む搬送ガスを吸引する吸引
装置（２６）とを備えた竪型ミルの分級制御方法であっ
て、 更に、分級前の搬送ガスの粉体濃度をリアルタイムに検
出する粉体濃度検出装置（２８）を備え、検出された粉
体濃度Ｐに応じて分級装置の回転速度Ｎ及び／又は吸引
装置の吸引風量Ｑを制御する、ことを特徴とする竪型ミ
ルの分級制御方法。1. A rotary classifier (21) for classifying a crushed powder entrained by a carrier gas into fine powder and coarse powder, and suction for sucking a carrier gas containing fine particles classified by the classifier. A classification control method for a vertical mill provided with a device (26), further comprising: a powder concentration detection device (28) for detecting the powder concentration of the carrier gas before classification in real time; A classification control method for a vertical mill, comprising controlling a rotation speed N of a classification device and / or a suction air volume Q of a suction device according to a body concentration P.
速度Ｎ及び吸引装置の吸引風量Ｑの適用範囲と前記粉体
濃度Ｐの最適値を予め設定し、検出された粉体濃度Ｐが
最適値より低い場合には、前記適用範囲内で回転速度Ｎ
の増加及び／又は吸引風量Ｑの低減を行い、粉体濃度Ｐ
が最適値より高い場合には、前記適用範囲内で回転速度
Ｎの低下及び／又は吸引風量Ｑの増加を行う、ことを特
徴とする請求項１に記載の竪型ミルの分級制御方法。2. The application range of the rotation speed N of the classifier and the suction air volume Q of the suction device and the optimum value of the powder concentration P are preset according to the powder to be pulverized. Is lower than the optimum value, the rotation speed N
And / or the suction air volume Q is reduced, and the powder concentration P
2. The classification control method for a vertical mill according to claim 1, wherein if the value is higher than the optimum value, the rotation speed N and / or the suction air volume Q is increased within the applicable range.
式粉体濃度測定器である、ことを特徴とする請求項１に
記載の竪型ミルの分級制御方法。3. The vertical mill classification control method according to claim 1, wherein the powder concentration detecting device is an electronic powder concentration measuring device.
式粉体濃度測定器である、ことを特徴とする請求項１に
記載の竪型ミルの分級制御方法。4. The method according to claim 1, wherein the powder concentration detecting device is an optical powder concentration measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000165675A JP2001340780A (en) | 2000-06-02 | 2000-06-02 | Classification control method for vertical mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000165675A JP2001340780A (en) | 2000-06-02 | 2000-06-02 | Classification control method for vertical mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001340780A true JP2001340780A (en) | 2001-12-11 |
Family
ID=18669115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000165675A Pending JP2001340780A (en) | 2000-06-02 | 2000-06-02 | Classification control method for vertical mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001340780A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005334698A (en) * | 2004-05-24 | 2005-12-08 | Furukawa Co Ltd | Fine powder recovery apparatus |
| JP2007296494A (en) * | 2006-05-02 | 2007-11-15 | Sharp Corp | Method for classifying powder, method for manufacturing toner and powder classifier |
| CN106466653A (en) * | 2015-08-21 | 2017-03-01 | 南京凯盛国际工程有限公司 | Novel vertical mill device |
| CN114377842A (en) * | 2021-12-27 | 2022-04-22 | 江苏丰尚智能科技有限公司 | Material fineness adjusting method and device, computer equipment and storage medium |
| CN115814915A (en) * | 2023-02-14 | 2023-03-21 | 山东埃尔派粉体科技有限公司 | Particle size regulating and controlling method of jet mill |
| CN115957881A (en) * | 2023-03-16 | 2023-04-14 | 青岛黑猫新材料研究院有限公司 | Processing method for white carbon black modifier |
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2000
- 2000-06-02 JP JP2000165675A patent/JP2001340780A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005334698A (en) * | 2004-05-24 | 2005-12-08 | Furukawa Co Ltd | Fine powder recovery apparatus |
| JP2007296494A (en) * | 2006-05-02 | 2007-11-15 | Sharp Corp | Method for classifying powder, method for manufacturing toner and powder classifier |
| CN106466653A (en) * | 2015-08-21 | 2017-03-01 | 南京凯盛国际工程有限公司 | Novel vertical mill device |
| CN114377842A (en) * | 2021-12-27 | 2022-04-22 | 江苏丰尚智能科技有限公司 | Material fineness adjusting method and device, computer equipment and storage medium |
| CN115814915A (en) * | 2023-02-14 | 2023-03-21 | 山东埃尔派粉体科技有限公司 | Particle size regulating and controlling method of jet mill |
| CN115814915B (en) * | 2023-02-14 | 2023-05-09 | 山东埃尔派粉体科技有限公司 | Particle size regulating and controlling method of jet mill |
| CN115957881A (en) * | 2023-03-16 | 2023-04-14 | 青岛黑猫新材料研究院有限公司 | Processing method for white carbon black modifier |
| CN115957881B (en) * | 2023-03-16 | 2023-09-05 | 青岛黑猫新材料研究院有限公司 | Treatment method for white carbon black modifier |
| CN116921033A (en) * | 2023-08-14 | 2023-10-24 | 邹平恒嘉新材料科技有限公司 | Negative-pressure linkage jet milling production process and system for boehmite powder |
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