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EP1880767A1 - Système de raccordement entre des laminoirs continus en série dans un atelier de broyage - Google Patents

Système de raccordement entre des laminoirs continus en série dans un atelier de broyage Download PDF

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Publication number
EP1880767A1
EP1880767A1 EP07110302A EP07110302A EP1880767A1 EP 1880767 A1 EP1880767 A1 EP 1880767A1 EP 07110302 A EP07110302 A EP 07110302A EP 07110302 A EP07110302 A EP 07110302A EP 1880767 A1 EP1880767 A1 EP 1880767A1
Authority
EP
European Patent Office
Prior art keywords
mouth
loading
connecting element
mill
unloading
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.)
Granted
Application number
EP07110302A
Other languages
German (de)
English (en)
Other versions
EP1880767B1 (fr
Inventor
Simone Casadio
Piero Poli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sacmi Imola SC
Original Assignee
Sacmi Imola SC
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
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Priority to PL07110302T priority Critical patent/PL1880767T3/pl
Publication of EP1880767A1 publication Critical patent/EP1880767A1/fr
Application granted granted Critical
Publication of EP1880767B1 publication Critical patent/EP1880767B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B02C21/007—Disintegrating plant with or without drying of the material using a combination of two or more drum or tube mills

Definitions

  • the invention relates in a general sense to a grinding plant destined in particular, though not exclusively, to be used in the preparation of ceramic mixtures.
  • These mixtures are generally prepared by damp comminution of the raw materials (silicon, feldspars, clay) and the addition of specific additives, up until a homogeneous slip is obtained, having the desired granulometry of the suspended powders.
  • a plant of this type usually comprises at least a grinding mill, which is provided with a rotating drum, internally of which the comminution process of the raw materials takes place by impact, and in any case by reciprocal action, between the raw materials themselves and a number of generally spherical grinding bodies.
  • Known grinding mills are subdivided into continuous mills and discontinuous mills, depending on whether the raw material loading stage into the drum and the slip unloading stage are done continuously during mill operation, or discontinuously, requiring temporary interruption of the production process and the halting of the rotating drum.
  • the present invention relates in particular to a grinding plant comprising continuous mills.
  • the comminution of the raw materials comprises a process in successive stages, starting from a breaking stage and terminating with a refining stage.
  • the grinding bodies exhibit different sizes, progressively diminishing in order of stages from breaking to refining; consequently, for each of the stages there is a rotating drum rotation speed such as to optimise the work operation, work times and energy consumption of the grinding mill.
  • the prior art describes plants comprising a plurality of continuous grinding mills located in series, in which the rotating drum of each mill contains grinding bodies and rotates at an independent velocity from the others, in order to carry out one of above-described stages of the comminution process optimally.
  • each rotating drum of the above-described plant is provided with a loading mouth for the material to be worked and an unloading mouth for the slip, which mouths are located on opposite sides of the drum and are arranged along the rotation axis thereof, and which mouths rotate solidly with the drum, facilitating continuous advancing of the loading raw material and the unloading slip.
  • the unloading mouth of an intermediate rotating drum is connected to the loading mouth of the next drum, by means of a tubular connecting element, which is also associated to an in-loading device for introducing grinding bodies and special additives (for example, dyes) directly internally of the downstream drum.
  • a tubular connecting element which is also associated to an in-loading device for introducing grinding bodies and special additives (for example, dyes) directly internally of the downstream drum.
  • a drawback of these known plants is that the tubular connecting element, differently to the unloading and loading conduits which rotate solidly with the respective rotating drums, must be solidly connected to the in-loading device and, consequently, must be fixed.
  • the free end of the unloading mouth inserts axially for a tract thereof internally of the tubular connection, which in turn is inserted for a tract thereof internally of the free end of the loading mouth of the next mill.
  • the aim of the present invention is to obviate the above-mentioned drawback, by providing a solution which is simple, rational and inexpensive.
  • a continuous grinding plant comprising a plurality of continuous mills located in series, in which the unloading mouth of a mill and the loading mouth of the following mill are connected by a connecting element, means being provided for preventing exit of the above-mentioned material between the connecting element (19) and the loading mouth and the unloading mouth during advancing of the material from the upstream mill to the downstream mill.
  • the means comprise a first helical body fixed to the free end of the unloading mouth of the upstream mill, such that the above-mentioned first helical body inserts internally of the connecting element, realising, in collaboration with a part of the internal surface of the connecting element, a first screw device which, during the advancing of the material, maintains the material internally of the connecting element.
  • the means preferably further comprise a second helical body located at the downstream mill loading mouth and fixed internally thereto, the second helical body inserting internally of the loading mouth of the downstream mill and realising, in collaboration with the downstream mill loading mouth, a second screw device which prevents exit of the material from the downstream end of the connecting element.
  • the grinding plant of the present invention comprises a plurality of continuous mills 2 located in series.
  • Each mill 2 comprises a rotating drum 3, which is formed by a cylindrical body 4 having a horizontal axis, which body 4 is closed, at an end thereof, by a first bottom 5 provided with an axial mouth 6 for loading the material, and at an opposite end thereof, by a bottom 7 provided with an axial mouth 8 for unloading the slip.
  • the rotating drum 3 is supported at each end by a suitable structure 9 and is activated by a special control system 10 by means of a belt system 11.
  • a grinding chamber Internally of the rotating drum 3 there is a grinding chamber, internally of which both the grinding bodies and the raw materials constituting the slip, i.e. essentially water, silicon, feldspars, clay are supplied.
  • the grinding bodies are typically made of silicon or aluminium and during plant operation get worn, to the point that they mix in with the slip under processing.
  • Figure 1 shows that the upstream first mill 2 is provided with a usual loading system 18 of the raw materials, which is in itself known, and that the loading mouth 6 of the second mill, and any further mills, is connected both to the unloading mouth 8 of the preceding mill and to a in-loading conduit 20 which is associated to a further loading device 21.
  • the in-loading conduit 20 advantageously enables the grinding bodies to be added separately for each of the continuous mills 2, and also enables materials or water to be introduced separately, thus constantly allowing the mixture to be corrected and ensuring an optimal composition.
  • Each of the continuous mills 2 of the grinding plant 1, being operatively independent of the others, is of optimum size and is also optimised in terms of the geometry thereof, the dimensions of the grinding bodies and the rotation velocity, for the specific stage of comminution it is to perform, and the slip under process passes continuously from a rotatable drum 3 to a following rotatable drum 3 with no process interruption, up until the desired granulometry of the suspended powders is obtained.
  • a fixed tubular connecting element 19 is interposed between the unloading mouths 8 and the loading mouths 6, which connecting element 19 is substantially constituted by a tube fixed to the support structure 9 by means of a rigid support 25.
  • the following are rotatably associated to the fixed tubular connecting element 19: on one side thereof, the unloading mouth 8, and on the other side thereof, the loading mouth 6.
  • the free end of the unloading mouth 8 inserts axially, for a tract thereof, internally of the tubular connecting element 19, which in turn is inserted, for a tract thereof, internally of the free end of the loading mouth 6.
  • the unloading mouth 8 is thus smaller than the fixed connecting element 19, while the connecting element 19 is smaller than the loading mouth 6.
  • Suitable means for sealing can be interposed between the unloading mouth 8 and the loading mouth 6 and the tubular connecting element 19, which means for sealing can advantageously contribute to preventing leakage of material from the plant 1.
  • a first helical body 23 is fixed to the free end of the unloading mouth 8 and to the external surface thereof, realising a first screw device according to the invention.
  • a second helical body 24 is fixed internally of the downstream loading mouth 6 of the mill, realising a second screw device of the invention.
  • the second helical body 24 is turned by the rotation of the continuous mill 2, to which the loading mouth 6 is associated.
  • the rotating drums 3 rotate independently of one another and, consequently, draw the unloading mouth 8 and the loading mouth 6 in rotation, while the tubular connecting element 19 remains fixed.
  • the properties of the present invention are advantageous also in consideration of the fact that other material flows internally of the connecting element 19 through the in-loading conduit 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP07110302A 2006-07-20 2007-06-14 Système de raccordement entre des laminoirs continus en série dans un atelier de broyage Active EP1880767B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07110302T PL1880767T3 (pl) 2006-07-20 2007-06-14 System połączeń między młynami, pracującymi w sposób ciągły i umieszczonymi w szeregu, w instalacji do mielenia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000089A ITRE20060089A1 (it) 2006-07-20 2006-07-20 Sistema di collegamento tra mulini continui in serie di un impianto di macinazione

Publications (2)

Publication Number Publication Date
EP1880767A1 true EP1880767A1 (fr) 2008-01-23
EP1880767B1 EP1880767B1 (fr) 2010-09-22

Family

ID=38521322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110302A Active EP1880767B1 (fr) 2006-07-20 2007-06-14 Système de raccordement entre des laminoirs continus en série dans un atelier de broyage

Country Status (9)

Country Link
EP (1) EP1880767B1 (fr)
CN (1) CN101108371B (fr)
BR (1) BRPI0702972A (fr)
ES (1) ES2351857T3 (fr)
IT (1) ITRE20060089A1 (fr)
MX (1) MX2007008602A (fr)
PL (1) PL1880767T3 (fr)
PT (1) PT1880767E (fr)
RU (1) RU2474476C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2907577A1 (fr) * 2014-02-13 2015-08-19 Geisberger Gesellschaft für Energieoptimierung mbH Dispositif pour installations de biogaz destiné à broyer et à broyer finement des mélanges de matières solides-liquides
US20220314230A1 (en) * 2019-09-05 2022-10-06 Certech S.P.A. A Socio Unico Continuous mill with controllable level
LU503625B1 (de) * 2023-03-13 2024-09-13 Schwenk Zement Gmbh & Co Kg Mechanische Aktivierung von Tonen
WO2024188958A1 (fr) 2023-03-13 2024-09-19 thyssenkrupp Polysius GmbH Activation mécanochimique d'argiles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104258938B (zh) * 2014-10-18 2016-06-01 山东鼎汇能科技股份有限公司 串联式连续球磨机及球磨方法
RU2619997C1 (ru) * 2015-12-09 2017-05-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ярославский государственный технический университет" (ФГБОУ ВО "ЯГТУ") Агрегат для смешения и измельчения твердых дисперсных материалов

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942727A (en) * 1973-04-13 1976-03-09 Boliden Aktiebolag Grinding plant
US6547171B1 (en) * 1999-05-07 2003-04-15 Alstom Pulverizing installation
EP1690598A1 (fr) * 2005-02-11 2006-08-16 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Système de connexion entre les moulins en séries et continus d'une installation de fraisage
EP1690597A1 (fr) * 2005-02-11 2006-08-16 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Système de connexion entre les moulins en séries et continus d'une installation de fraisage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398908A (fr) * 1909-01-28 1909-06-17 Gerhard Zarniko Système de broyage comprenant plusieurs moulins à tambour
FR918556A (fr) * 1945-08-17 1947-02-12 Cie De Fives Lille Perfectionnements aux installations de broyeurs à boulets, à tambour rotatif
US2549919A (en) * 1947-06-06 1951-04-24 Smidth & Co As F L Airswept rotary mill or drum having separate discharge means for air and ground material
RU37797U1 (ru) * 2003-12-05 2004-05-10 Общество с ограниченной ответственностью Инженерный центр "Альтерэн" Узел для соединения труб (варианты)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942727A (en) * 1973-04-13 1976-03-09 Boliden Aktiebolag Grinding plant
US6547171B1 (en) * 1999-05-07 2003-04-15 Alstom Pulverizing installation
EP1690598A1 (fr) * 2005-02-11 2006-08-16 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Système de connexion entre les moulins en séries et continus d'une installation de fraisage
EP1690597A1 (fr) * 2005-02-11 2006-08-16 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Système de connexion entre les moulins en séries et continus d'une installation de fraisage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2907577A1 (fr) * 2014-02-13 2015-08-19 Geisberger Gesellschaft für Energieoptimierung mbH Dispositif pour installations de biogaz destiné à broyer et à broyer finement des mélanges de matières solides-liquides
US20220314230A1 (en) * 2019-09-05 2022-10-06 Certech S.P.A. A Socio Unico Continuous mill with controllable level
LU503625B1 (de) * 2023-03-13 2024-09-13 Schwenk Zement Gmbh & Co Kg Mechanische Aktivierung von Tonen
WO2024188958A1 (fr) 2023-03-13 2024-09-19 thyssenkrupp Polysius GmbH Activation mécanochimique d'argiles

Also Published As

Publication number Publication date
PL1880767T3 (pl) 2011-03-31
CN101108371A (zh) 2008-01-23
CN101108371B (zh) 2010-09-29
BRPI0702972A (pt) 2008-03-04
ES2351857T3 (es) 2011-02-11
RU2007121939A (ru) 2008-12-20
PT1880767E (pt) 2010-12-14
EP1880767B1 (fr) 2010-09-22
RU2474476C2 (ru) 2013-02-10
ITRE20060089A1 (it) 2008-01-21
MX2007008602A (es) 2009-01-07

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