EP0283682B1 - Walzenmühle - Google Patents

Walzenmühle Download PDF

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Publication number
EP0283682B1
EP0283682B1 EP88101623A EP88101623A EP0283682B1 EP 0283682 B1 EP0283682 B1 EP 0283682B1 EP 88101623 A EP88101623 A EP 88101623A EP 88101623 A EP88101623 A EP 88101623A EP 0283682 B1 EP0283682 B1 EP 0283682B1
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EP
European Patent Office
Prior art keywords
classifier
mill
rotary
flow
carrier gas
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
EP88101623A
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English (en)
French (fr)
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EP0283682A2 (de
EP0283682A3 (en
Inventor
Hirohisa Nagasaki Technical Inst. Yoshida
Kenichi Nagasaki Technical Inst. Arima
Tsugio Nagasaki Technical Inst. Yamamoto
Hiromu Nagasaki Ship. & Eng. Works Of Takatsuka
Kenichi Nagasaki Ship. & Eng. Works Of Hisamatsu
Yoshiki Nagasaki Ship. & Eng. Works Of Yamaguchi
Yoshitaka Koga
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP62067908A external-priority patent/JPH0757324B2/ja
Priority claimed from JP62067907A external-priority patent/JPH0773678B2/ja
Priority claimed from JP17900587A external-priority patent/JPS6422386A/ja
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0283682A2 publication Critical patent/EP0283682A2/de
Publication of EP0283682A3 publication Critical patent/EP0283682A3/en
Application granted granted Critical
Publication of EP0283682B1 publication Critical patent/EP0283682B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the present invention relates to a roller mill, of the kind defined by the precharacterizing features of claim 1, and more particularly to a roller mill associated with a rotary-type classifier that is available for pulverizing coal to be used in a pulverized coal fired boiler, for pulverizing clinker to produce cement or for similar purposes.
  • roller mill associated with a rotary-type classifier in the prior art with reference to Fig. 14.
  • the illustrated roller mill has such structure that within a mill main body (1) is disposed a table (2) which is turned by a vertical drive shaft (not shown), a plurality of rollers (3) which are rotated while being pressed against the upper surface of the table (2) to crush material (a) to be pulverized are disposed to the table (2), a rotary-type classifier (6) is disposed above the table (2), thereby the material (a) to be pulverized such as lump coal thrown into the mill through a feed pipe (8) is pressed on the turning table (2) by means of the respective rollers (3) to crush it under a given load and eject it to the outer circumference of the same table, hot air (b) introduced through a hot-air inlet (4) at the below is fed in association with the pulverized material through a blow-up section (5) opened along the entire outer circumference of the table (2) into the mill main
  • roller mill associated with a rotary-type classifier in the prior art involved the problems that a swirl would be generated under the flat bottom plate of the rotary-type classifier, flow velocities of air would become irregular at the inlet of the rotary blades, hence a classification performance is greatly deteriorated by the irregularity of the air flow velocities at the inlet of the rotary blades because the rotary-type classifier utilizes the mechanism of classifying into coarse powder and fine powder on the basis of the balance between a centrifugal force given by the rotation of the rotary blades and a centripetal force given to particles by an air flow, also fine powder would settle and pile on the flat bottom plate, and if it continues to pile over a long period of time, in the case of pulverized coal, it may cause autogeneous ignition or explosion.
  • the above-described roller mill in the prior art involved an additional problem that while the coarse powder classified by the rotary blades of the rotary-type classifier and ejected to the outside is necessitated to be made to fall on the table and to be crushed again, due to the fact that the coarse powder consists of particles raised by rising carrier gas and the rising velocity of the rising carrier gas is almost equal at every location along a radial direction and a circumferential direction on the transverse cross-section of the mill, the above-mentioned coarse powder would hardly fall on the table, as a result a powder density within the mill becomes high, a pressure loss within the mill is increased, the interior of the mill becomes a fluidized bed, resulting in a large pressure variation, and this brings about large adverse effects upon a pulverizing performance.
  • a roller mill of the type defined at the preamble is known from the US-A-4 084 754.
  • This roller mill in addition to the constructional features of the mill described above along Fig. 14, comprises a downwardly convex flow-rectifying cone which is disposed under the rotary-type classifier and an upwardly convex slant plate for ejecting a sediment with the classifier, which plate is disposed above said flow rectifying cone.
  • the problems associated with the flat bottom plate of the classifier of the mill described above along Fig. 14 are avoided by the provision of the downwardly convex cone and the slant. Further problems discussed above, mainly those concerned with the pulverizing performance, however, are not overcome by the known roller mill.
  • pulverizing efficiency can be greatly enhanced, by largely reducing a pressure loss and an amplitude of pressure variation within the mill.
  • FIG. 1 A first preferred embodiment of the present invention is illustrated in Fig. 1, in which reference numeral (1) designates a mill main body, numeral (2) designates a table, numeral (3) designates a roller numeral (4) designates an inlet of hot air, numeral (5) designates a blow-up section of hot air, numeral (6) designates a rotary-type classifyer, numeral (8) designates a feed pipe of material (a) to be pulverized, and numeral (9) designates a discharge cylinder of fine powder.
  • reference numeral (1) designates a mill main body
  • numeral (2) designates a table
  • numeral (3) designates a roller
  • (4) designates an inlet of hot air
  • numeral (5) designates a blow-up section of hot air
  • numeral (6) designates a rotary-type classifyer
  • numeral (8) designates a feed pipe of material (a) to be pulverized
  • numeral (9) designates a discharge cylinder of fine powder.
  • roller mill associated with a rotary-type classifier which forms a subject matter of the present invention, is such that in a roller mill including a table (2) disposed within a mill main body (1) and turned by a vertical drive shaft (not shown), a plurality of rollers (3) rotated as pressed against the upper surface of the table (2) to crush material (a) to be pulverized in cooperation with the table (2), and a rotary-type classifier (6) disposed above the table for classifying pulverized material in a rising carrier gas, a downwardly convex flow-rectifying cone (11) is disposed under the rotary-type classifier (6), and an upwardly convex slant plate (12) for ejecting a sediment within the classifier is disposed above the flow-rectifying cone (11).
  • the inclination angle of the above-mentioned slant plate (12) is selected in correspondence to a slip angle of the sediment and preferably to be a little steeper than the corresponding angle, the slant plate (12) rotates about the feed pipe (8), and the flow-rectifying cone (11) also can be made to likewise rotate.
  • the material (a) to be pulverized such as lump coal charged through the feed pipe (8) is pressed by the plurality of rollers (3) on the rotating table (2), thus applied with a load to be crushed, and ejected to the outer circumferential portion of the table (2), then hot air (b) introduced through the hot air inlet (4) at the below passes through the blow-up section (5) and becomes a rising carrier gas as accompanied by the ejected pulverized material, this rising carrier gas rises through the inner space of the mill main body (1) above the table (2), flows into an inlet section of rotary blades (6a) after it has been rectified in flow by the downwardly convex rectifying cone (11), and since generation of a swirl under the rotary-type classifier (6) is almost eliminated by the rectifying cone (11) and flow velocities of the rising carrier gas at the inlet section of the rotary blades (6a) are made to be uniform, the pulverized material in the rising carrier gas can be classified smoothly and efficiently by the rotary blades (6a
  • the classified fine powder is derived through the discharge cylinder (9) jointly with the carrier gas, while the coarse powder is ejected to the outside of the classifier by the rotary blades (6a) and falls on the table (2), and then it is crushed again.
  • the slip angle of the slant plate (12) that is, the slip angle in the case of coal
  • the slip angle of coal is different depending upon a variety of coal as indicated in Table-1 below, for instance, in the case of Chinese coal (E) having a slip angle of 25.4 degrees, it is preferable to select the inclination angle of the slant plate (12) to be about 30°, and if the slant plate (12) is rotated, slip-down of the sediment becomes smooth.
  • the rotational speed of the classifier can be made to be lower by about 20%, and this is an effect brought about by equalization of an air velocity distribution at the inlet of the classifier caused by the flow-rectifying cone (11) and ejection and reclassification of a sediment caused by the slant plate (12).
  • FIG. 3 to 5 A second preferred embodiment of the present invention is illustrated in Figs. 3 to 5, in which reference numeral (1) designates a mill main body, numeral (2) designates a table that is turned by a vertical drive shaft (not shown), numeral (3) designates rollers rotated as pressed against the upper surface of the table (2), numeral (4) designates an inlet of hot air, numeral (8) designates a feed pipe of material to be pulverized, numeral (9) designates a discharge cylinder, numeral (5) designates a blow-up passageway of hot air disposed locally on the outer circumferential portion of the table (2), and numeral (6) designates a rotary type classifier disposed in the upper portion within the mill main body (1).
  • reference numeral (1) designates a mill main body
  • numeral (2) designates a table that is turned by a vertical drive shaft (not shown)
  • numeral (3) designates rollers rotated as pressed against the upper surface of the table (2)
  • numeral (4) designates an inlet of hot air
  • the construction is such that the mill includes a table (2) disposed within the mill main body (1) and a plurality of rollers (3) rotated as pressed against the upper surface of the table (2) to crush material to be pulverized, a blow-up passageway (5) of hot air is disposed on the outer circumferential portion of the table (2), and a baffle plate (20) for hot air covering a part of the upper side of the blow-up passageway (5) as spaced therefrom is disposed above the blow-up passageway (5).
  • blow-up passageways (5) are disposed in multiple (three in the illustrated case) between hot air shut-off plates (21) provided along the outer circumferential portion of the table (2), as spaced from each other in the circumferential direction as shown in Figs. 4 and 5, and the arrangement is such that hot air (b) may be made to pass towards the base side of a baffle plate (20) by means of a plurality of guide plates (15a) disposed in parallel to each other. As shown in Figs.
  • the above-described baffle plates (20) are disposed above the respective blow-up passageways (5) as spaced therefrom so as to cover a part of the upper side of the blow-up passageways (5), they are largely inclined and opened as directed in the turning direction of the table (2) (in the direction by an arrow) and also inclined and opened towards the center of the mill, hot air passed through the respective blow-up passageways (5) becomes a rising carrier gas accompanied by the pulverized material ejected to the outer circumference of the table (2), a part of the above-mentioned rising carrier gas strikes against the lower surface of the baffle plate (20) and is diverted thereby, and then it flows out through the above-mentioned openings and becomes a rising carrier gas within the mill main body.
  • an upwardly convex slant plate (12) is disposed at the bottom end of rotary blades (6a), a downwardly convex flow-rectifying cone (11) is provided on the downside of the slant plate (12), hence the slant plate (12) and the flow-rectifying cone (11) rotate together, and thereby fine powder or the like (possibly including coarse powder) deposited on the inside of the rotary blades (6a) are made to slip down to the circumferential portion by the slant plate (12).
  • the second preferred embodiment of the present invention is constructed as described above, and now description will be made on the operation of the second preferred embodiment.
  • Material (a) to be pulverized such as lump coal charged through the feed pipe (8) is pressed by a plurality of rollers (3) on the turning table (2), applied with a load, crushed and then ejected to the outer circumference of the table (2).
  • Hot air (b) introduced through the hot air inlet (4) at the below, is passed through the respective blow-up passageways (5), and becomes a rising carrier gas (b ⁇ ) as accompanied by crushed material of the material (a) to be pulverized that is ejected to the outer circumferential portion of the table (2), then a part of the rising carrier gas (b ⁇ ) strikes against the lower surface of the baffle plate (20) and is diverted thereby, and it passes through the openings on the side of the circumferential direction and on the side of the center of the mill and rises within the mill main body.
  • the above-mentioned carrier gas (b ⁇ ) strikes against the lower surface of the baffle plate (20), coarse particles contained in the pulverized material are greatly diverted and fall on the
  • the rising carrier gas accompanied by the pulverized material rises within the mill main body, and is passed to the inside of the rotary blades (6a) after it has been rectified in flow by the flow-rectifying cone (11), the pulverized material in the rising carrier gas is classified by the rotary blades (6a) into coarse powder and fine powder, and the fine powder is derived through the discharge cylinder (9), while the coarse powder is ejected to the outside of the rotary-type classifier (6) by the action of the rotary blades (6a), then falls on the table (2) and is crushed again.
  • the above-mentioned falling passageways for coarse powder are partly formed in the rising carrier gas, hence they do not cause any special hindrance to the rise of the pulverized material caused by the high velocity portion, a pressure loss is greatly reduced, and the falling of coarse powder onto the table becomes smooth.
  • the upper surfaces of the hot air shut-off plate (21) and the respective baffle plates (20) are formed in slant surfaces having an inclination angle corresponding to a slip angle of the coarse powder in question but a little larger than the latter.
  • a slip angle of at least 16 - 47 degrees is necessitated as shown in Table-1 above though it may be different depending upon varieties of coal.
  • the inclination angle on the upper side of the hot air shut-off plate and the baffle plates to be equal to the slip angle in the table plus about 10 degrees, then the coarse powder, that is, the material to be pulverized on the hot air shut-off plate (21) and the respective baffle plates (20) would slip and fall onto the table (2) and would be crushed.
  • a third preferred embodiment of the present invention will be described with reference to Figs. 8 to 10.
  • This preferred embodiment provides further improvements on the first preferred embodiment shown in Fig. 1 as illustrated in Fig. 8(A) and on the second preferred embodiment shown in Figs. 3 to 5 as illustrated in Fig. 8(B) in that a classifying efficiency of the classifying blades in the rotary-type classifier is optimized, as will be described in the following.
  • preferred embodiment includes component parts similar to those used in the first and second preferred embodiments, and the equivalent component parts are given like reference numerals.
  • reference numeral (10) designates an upper support plate for classifying blades (6a), a plurality of classifying blades (6a) are disposed along generating lines of an inverse frusto-conical surface having a vertical axis, and supported at their upper and lower ends by the upper support plate (10) and a downwardly convex flow-rectifying cone (11), and they are adapted to be rotated about a feed pipe (8) that is disposed along the vertical axis of the above-mentioned inverse frusto-conical surface.
  • an angle ⁇ 3 See Fig.
  • a principle of classification into coarse powder and fine powder by rotation of the classifying blades (6a) is based on the following two effects:
  • the classifier when the classifier is operated under a fixed condition, coarse particles for which F > R is fulfilled are ejected to the outside of the classifier, while fine particles for which F ⁇ R is fulfilled flow to the inside of the classifier, and thereby the pulverized material can be classified into coarse particles and fine particles.
  • Fig. 10 is also shown the state of the particle striking against the blade.
  • the direction of reflection ( ⁇ ) after the particles have struck against the blades is directed more outwards than a tangential line, the particles are liable to be ejected to the outside of the classifier, whereas when the direction (c) is directed inwards, the particles are apt to flow into the classifier.
  • ⁇ direction of reflection
  • c direction of reflection
  • the angle ⁇ 3 formed between the classifying blade (6a) and the rotary radius r is selected to be 30° to 60°.
  • the angle ⁇ 2 formed between the classifying blade (6a) and the rotary axis (the vertical direction) is selected to be 0° to 40°.
  • Fig. 11 shows a relation between the angle ⁇ 3 and a wearing rate of the classifying blade. According to this diagram, for the angle ⁇ 3 in the proximity of 25° the wearing rate becomes maximum, and it is reduced over the range of the angle ⁇ 3 from 30° to 60°.
  • Fig. 12 shows relations between the angle ⁇ 3 and an amount of product as well as an average particle diameter in the product. As the angle ⁇ 3 becomes large, an amount of product is reduced in accordance with the angle, and an average particle diameter also becomes small. However, in the range of 45° ⁇ 15°, a separating effect would act greatly, and a product having a small average particle diameter can be obtained.
  • a region of the angle ⁇ 3 where operation of a mill having balanced values for a wearing rate of classifying blades, an amount of product and an average particle diameter can be achieved is 45° ⁇ 15°.
  • Fig. 13 shows a relation between the angle ⁇ 2 and an average particle diameter in a product.
  • a specific gas flow rate (practical gas flow rate/reference gas flow rate) of a carrier gas containing powder
  • the roller mill according to the present invention is constructed as described above, hence a rising carrier gas accompanied by pulverized material enters into an inlet of the rotary blades after it has been rectified in flow by the downwardly convex flow-rectifying cone, thus generation of swirls under the rotary-type classifier is eliminated, flow velocities of a rising carrier gas at the inlet of the rotary blades are made to be uniform, classification of materials to be pulverized by the rotary blades becomes smooth, an efficiency of classification is enhanced, also a sediment of fine powder or the like within the classifier is made to slip and fall due to the slant plate, then it is mixed with the rising carrier gas on the outside of the classifier to be reclassified, and thereby advantages are provided such that a classifying performance and an operational reliability are remarkably improved, and a safety is enhanced in such manner that for instance, autogeneous firing or explosion within a classifier can be prevented.
  • hot air passed through a blow-up passageway provided along an outer circumferential portion of a table within a mill main body becomes a rising carrier gas as accompanied by pulverized material ejected to the outer circumference of the table, a part of the rising carrier gas strikes against a baffle plate and is diverted thereby.
  • coarse particles are primarily classified and made to fall on the table.
  • the low rising velocity portions become falling passageways for coarse powder classified by the classifier.
  • the above-mentioned coarse powder can fall smoothly onto the table jointly with the above-described coarse particles, thus a falling performance of coarse powder or the like can be remarkably enhanced, a pressure loss and an amplitude of pressure variations within the mill are greatly reduced, and a pulverizing performance and an operational reliability are greatly improved.
  • an angle formed between a classifying blade of a rotary classifier in a roller mill and a rotary radius is selected to be 30° to 60° and an angle formed between the same classifying blade and a rotary axis to be 0° to 40°
  • a roller mill incorporating a rotary-type classifier having the optimum configuration can be provided, and thereby classification into fine powder and coarse powder can be carried out efficiently.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)

Claims (2)

  1. Walzenmühle mit

       einem innerhalb eines Mühlenhauptkörpers (1) angeordneten und mittels einer lotrechten Welle drehbaren Tisch (2),

       einer Anzahl von mit Andruckberührung gegen die Oberseite des Tisches (2) drehbaren Walzen (3) zum Zerquetschen des zu pulverisierenden Guts im Zusammenwirken mit dem Tisch (2),

       einem sich längs des gesamten Außenumfangs des Tisches (2) in den Mühlenhauptkörper (1) an der Oberseite des Tisches (2) öffnenden Hochblasteil (5),

       einem oberhalb des Tisches (2) angeordneten Rotations-Klassierer (6) zum Klassieren des pulverisierten Guts in einem hochsteigenden Trägergas,

       einem unterhalb des Klassierers (6) angeordneten, in Abwärtsrichtung konvexen Strömungs-Beruhigungskegel (11) und

       einer oberhalb des Strömungs-Beruhigungskegels (11) angeordneten, in Aufwärtsrichtung konvexen Schrägplatte (12) zum Austreiben einer Ablagerung mit dem Klassierer

       gekennzeichnet durch

       Leitplatten (20) zum Ablenken des Gasstroms einwärts und aufwärts oberhalb jedes Durchgangs des Hochblasteils (5), wobei die Leitplatten (20)

    zwischen dem Außenumfang des Tisches (2) und der Innenwand des Mühlenhauptkörpers (1) ausgebildet sind,

    von den Durchgängen so beabstandet sind, daß sie einen Teil der Oberseite der Hochblasdurchgänge abdecken,

    stark geneigt und unter Ausrichtung in Drehrichtung des Tisches (2) offen und weiterhin in Richtung auf das Zentrum der Mühle geneigt und offen sind, um damit in Umfangsrichtung beabstandete Bereiche zu bilden, in denen die Geschwindigkeit des aufwärts gerichteten Gases niedrig ist,

    wobei diese Bereiche als Rückführdurchgänge nutzbar sind, um grobes Pulver, das im Klassieren (6) abgetrennt wird, gleichmäßig bzw. zügig zum Tisch (2) zurückzuführen.
  2. Walzenmühle nach Anspruch 1 , dadurch gekennzeichnet, daß Drehflügel (6a) des RotationsKlassierers (6) in deren Radialrichtung in einer Richtung entgegengesetzt zu der Richtung ihrer Drehung geneigt sind, um das grobe Pulver schnell und sicher die Rückführdurchgänge erreichen zu lassen, und daß der Winkel Θ₃ zwischen jedem Flügel (6a) und der Radialrichtung 30 - 60° beträgt.
EP88101623A 1987-03-24 1988-02-04 Walzenmühle Expired - Lifetime EP0283682B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP62067908A JPH0757324B2 (ja) 1987-03-24 1987-03-24 回転式分級機付ローラミル
JP67908/87 1987-03-24
JP62067907A JPH0773678B2 (ja) 1987-03-24 1987-03-24 回転式分級機付ローラミル
JP67907/87 1987-03-24
JP179005/87 1987-07-20
JP17900587A JPS6422386A (en) 1987-07-20 1987-07-20 Rotary type sorter

Publications (3)

Publication Number Publication Date
EP0283682A2 EP0283682A2 (de) 1988-09-28
EP0283682A3 EP0283682A3 (en) 1989-04-05
EP0283682B1 true EP0283682B1 (de) 1991-07-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101623A Expired - Lifetime EP0283682B1 (de) 1987-03-24 1988-02-04 Walzenmühle

Country Status (7)

Country Link
EP (1) EP0283682B1 (de)
CN (1) CN1006852B (de)
AU (1) AU585746B2 (de)
CA (1) CA1317267C (de)
DE (1) DE3863803D1 (de)
ES (1) ES2024560B3 (de)
IN (1) IN170412B (de)

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JPH07108387B2 (ja) * 1988-04-11 1995-11-22 三菱重工業株式会社 粉砕機用ロータリーセパレータ
DE3839419A1 (de) * 1988-11-22 1990-05-23 Krupp Polysius Ag Vorrichtung zur materialzufuehrung zu einem anlagenteil
JP2813361B2 (ja) * 1989-03-03 1998-10-22 三菱重工業株式会社 微粉炭燃焼方法
CN2122687U (zh) * 1992-05-03 1992-11-25 武汉工业大学 立轴锤破旋风离心自磨机
JP3207702B2 (ja) * 1995-04-04 2001-09-10 三菱重工業株式会社 ローラミル用回転式分級機
AU6996200A (en) * 1999-09-14 2001-04-17 F.L. Smidth & Co A/S Method and apparatus for grinding of particulate material
DE102005040519B4 (de) * 2005-08-26 2009-12-31 Loesche Gmbh Verfahren und Vorrichtung zur Vermahlung von heißem und feuchtem Rohmaterial
CN102784702A (zh) * 2011-05-15 2012-11-21 盐城吉达机械制造有限公司 一种并联粉磨工艺及其设备
CN102784703A (zh) * 2011-05-15 2012-11-21 盐城吉达环保设备有限公司 一种串联粉磨工艺及其设备
JP5905366B2 (ja) 2012-08-28 2016-04-20 三菱重工業株式会社 回転式分級機及び竪型ミル
JP6352162B2 (ja) 2014-11-28 2018-07-04 三菱日立パワーシステムズ株式会社 竪型ローラミル
CN105013596B (zh) * 2015-07-14 2018-05-25 中国矿业大学 磨煤机循环负荷中难磨矿物质分选装置及分选工艺
JP6629605B2 (ja) * 2016-01-27 2020-01-15 三菱日立パワーシステムズ株式会社 分級機、粉砕分級装置及び微粉炭焚きボイラ
CN106583003A (zh) * 2017-01-20 2017-04-26 重庆奇爽实业（集团）有限公司 一种改进的磨粉机
JP6500066B2 (ja) * 2017-09-19 2019-04-10 三菱日立パワーシステムズ株式会社 バイオマスミル
CN108940558A (zh) * 2018-01-30 2018-12-07 上海意丰机电科技开发有限公司 一种动、静风环
CN109365063B (zh) * 2018-10-19 2023-09-08 四川亿欣新材料有限公司 一种多叶轮立磨机
CN111189985B (zh) * 2020-03-03 2022-05-31 上蔡县状元红食品质量检测服务有限公司 一种食品营养成分检测装置

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US4084754A (en) * 1976-07-27 1978-04-18 Loesche Hartzerkleinerungs-Und Zementmaschinen Gmbh & Co. Kg Combined vane-rotor separator
DE8425837U1 (de) * 1984-08-31 1984-11-22 Krupp Polysius Ag, 4720 Beckum Wälzmühle
US4759509A (en) * 1985-08-15 1988-07-26 Combustion Engineering, Inc. Supermill journal spring system
IN166426B (de) * 1986-02-24 1990-05-05 Combustion Eng

Also Published As

Publication number Publication date
CN1006852B (zh) 1990-02-21
AU585746B2 (en) 1989-06-22
CN88101496A (zh) 1988-10-05
IN170412B (de) 1992-03-21
EP0283682A2 (de) 1988-09-28
DE3863803D1 (de) 1991-08-29
CA1317267C (en) 1993-05-04
ES2024560B3 (es) 1992-03-01
AU1358888A (en) 1988-09-22
EP0283682A3 (en) 1989-04-05

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