EP1690597B1 - Connection system between in-series, continuous mills of a milling plant - Google Patents

Connection system between in-series, continuous mills of a milling plant Download PDF

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Publication number
EP1690597B1
EP1690597B1 EP06075032A EP06075032A EP1690597B1 EP 1690597 B1 EP1690597 B1 EP 1690597B1 EP 06075032 A EP06075032 A EP 06075032A EP 06075032 A EP06075032 A EP 06075032A EP 1690597 B1 EP1690597 B1 EP 1690597B1
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EP
European Patent Office
Prior art keywords
mouth
loading
plant
mill
connection element
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.)
Active
Application number
EP06075032A
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German (de)
English (en)
French (fr)
Other versions
EP1690597A1 (en
Inventor
Simone c/o SACMI Coop. Mecc. Imola S.C. Casadio
Piero c/o SACMI Coop. Mecc. Imola S.C. 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
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Sacmi Imola SC
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Publication date
Application filed by Sacmi Imola SC filed Critical Sacmi Imola SC
Priority to PL06075032T priority Critical patent/PL1690597T3/pl
Publication of EP1690597A1 publication Critical patent/EP1690597A1/en
Application granted granted Critical
Publication of EP1690597B1 publication Critical patent/EP1690597B1/en
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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 present invention generally refers to a milling plant according to the pre-characterizing portion of claim 1 particularly even if not exclusively intended to be employed in the preparation of ceramic mixtures.
  • Such mixtures are generally prepared by means of the moist pulverisation of the raw materials (silica, feldspar, clay) and the addition of specific additives, until a homogenous casting slip having the desired granulometry of the powders in suspension.
  • one such plant normally comprises at least one grinding mill, which is provided with a rotating cylinder, at whose interior the pulverisation operation of the raw materials is carried out by the collisions, and in any case mutual actions, between the raw materials themselves and a set of generally spherical grinding bodies.
  • the known grinding mills are subdivided into continuous and discontinuous mills, according to which the steps of loading the material inside the rotating cylinder and discharging of the casting slip occur in a continuous manner during the operation of the mill, or in discontinuous manner, requiring the temporary interruption of the productive process and the stopping of the rotating cylinder.
  • the present invention refers in particular to a milling plant comprising mills of continuous type.
  • the process of pulverisation of the raw materials foresees a set of successive steps, beginning with a crushing step and ending with a refining step.
  • the grinding bodies For the different steps, the grinding bodies must have different and decreasing sizes passing from the crushing to the refining and, consequently, for each of said steps there exists a rotation speed of the rotating cylinder which optimises the processing effectiveness, the execution time and the energy consumption of the grinding mill.
  • plants comprising a plurality of continuous grinding mills placed in series between each other, in which the rotating cylinder of each mill contains the grinding bodies, and is adapted to rotate at a speed independent from the others in order to be able to execute in optimal manner one of the aforementioned steps of the pulverisation process.
  • each rotating cylinder of the aforementioned plant is provided with a loading mouth of the material to be processed and a discharging mouth of the casting slip which, fixed on opposite parts of the cylinder and arranged along the rotation axis of the same, are adapted to rotate integral with it, facilitating the continuous advancement of the input material and output casting slip.
  • the discharge mouth of an intermediate rotating cylinder is connected to the loading mouth of the successive cylinder by means of a tubular connection element, which is in turn associated with an input device adapted to introduce grinding bodies and appropriate additives (for example colorants) directly inside the downstream cylinder.
  • a tubular connection element which is in turn associated with an input device adapted to introduce grinding bodies and appropriate additives (for example colorants) directly inside the downstream cylinder.
  • a known solution for improving this material transfer as disclosed in the US patent specification US 3 942 727 comprises a plurality of continuous mills placed in series, in which the discharge mouth of one mill and the loading mouth of the subsequent mill are connected by means of a connection element comprising means adapted to make the material which crosses it continuously advance.
  • Object of the present invention is that of overcoming the mentioned drawback, within the scope of a simple, rational solution with limited cost. Such object is realised by a continuous milling plant according to claim 1.
  • said advancement means comprise a helical body fixed at the free end of one of the discharge mouths of the upstream mill and the loading mouth of the downstream mill, so that said helical body is inserted within the connection element, realising a screw device with the latter which permits the advancement of the material.
  • the milling plant, object of the present invention comprises a plurality of continuous mills 2 placed in series.
  • Each mill 2 comprises a rotating cylinder 3, which is formed by a horizontal axis cylindrical body 4, closed at one end by a first bottom 5 provided with an axial mouth 6 for the loading of the material, and closed at the opposite end by a bottom 7 provided with an axial mouth 8 for the discharging of the casting slip.
  • the cylindrical body 3 is supported at each of the ends by a suitable structure 9, and is operated by an appropriate control system 10 through a belt system 11.
  • a grinding chamber is defined, at whose interior both the grinding bodies and the raw materials which compose the casting slip are fed, or rather essentially water, silica, feldspar and clay.
  • the grinding bodies are typically in silica or aluminium and during the operation of the plan are worn until they are mixed with the casting slip being processed.
  • the first upstream continuous mill 2 is provided with a per se known normal loading system 18 of the raw materials, and that the loading mouth 6 of the second mill, and possible subsequent mills, is connected to the discharge mouth 8 of the preceding mill by means of a tubular connection element 19.
  • a tubular connection element 19 Connected to said tubular connector 19 is an additional input conduit 20 which, associated with a normal loading device 21, is adapted to feed both grinding bodies and other additives.
  • said input conduit 20 permits both separately reintegrating the grinding bodies for each of the continuous mills 2 and separately introducing materials, or water, constantly permitting mixture correction and thus guaranteeing an optimal composition.
  • Each of the continuous mills 2 of the milling plant 1, being operatively independent from the others, is sized and optimised in geometric terms, in the dimensions of the grinding bodies as well as in the rotation speed, for the specific pulverisation step to which it is assigned, and the processing casting slip continuously passes from one rotating cylinder 3 to the next without interrupting the process, until the desired granulometry of the powders in suspension is obtained.
  • the connector 19 is interposed, which is composed of a tube fixed to the support structure 9 by means of two rigid supports 25, to which the discharge mouth 8 is rotatably associated on one side, while on the other side the loading mouth 6 is rotatably associated.
  • the free end of the discharge mouth 8 is axially inserted for a section inside the tubular connector 19, which in turn is inserted for a section inside the free end of the loading mouth 6.
  • sealing means may be interposed which are adapted to advantageously avoid that there are losses of material from the plant 1.
  • a helical body 23 is cantilevered, which, extending coaxially within the tubular connector, realises a screw device with the latter.
  • the rotating cylinders 3 rotate independently from each other and, consequently, drive in rotation the discharge 8 and loading 6 mouths, while the tubular connector 19 remains fixed.
  • the helical body 23, which is united to the discharge mouth 8 rotates inside said connector 19, and pushes the material coming from the upstream rotating cylinder 3 and from the input conduit 20 to advance towards the loading mouth 6 of the downstream rotating cylinder 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Milling Processes (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Pulverization Processes (AREA)
EP06075032A 2005-02-11 2006-01-10 Connection system between in-series, continuous mills of a milling plant Active EP1690597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06075032T PL1690597T3 (pl) 2005-02-11 2006-01-10 System połączenia pomiędzy szeregowymi, ciągłymi młynami instalacji młynowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000011A ITRE20050011A1 (it) 2005-02-11 2005-02-11 Sistema di collegamento tra mulini continui in serie di un impianto di macinazione

Publications (2)

Publication Number Publication Date
EP1690597A1 EP1690597A1 (en) 2006-08-16
EP1690597B1 true EP1690597B1 (en) 2009-09-16

Family

ID=36061578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06075032A Active EP1690597B1 (en) 2005-02-11 2006-01-10 Connection system between in-series, continuous mills of a milling plant

Country Status (9)

Country Link
EP (1) EP1690597B1 (it)
CN (1) CN1817600B (it)
AT (1) ATE442906T1 (it)
DE (1) DE602006009161D1 (it)
ES (1) ES2331586T3 (it)
IT (1) ITRE20050011A1 (it)
PL (1) PL1690597T3 (it)
PT (1) PT1690597E (it)
RU (1) RU2394650C2 (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRE20060089A1 (it) * 2006-07-20 2008-01-21 Sacmi Sistema di collegamento tra mulini continui in serie di un impianto di macinazione
ITMO20070138A1 (it) * 2007-04-19 2008-10-20 Siti B & T Group S P A "impianto di macinazione"
ITMO20130299A1 (it) * 2013-10-21 2015-04-22 Mario Dazzi Impianto di macinazione
CN105080671B (zh) * 2015-09-10 2018-06-08 佛山市浩丰重工有限公司 一种高效节能的连续球磨机
IT201600123088A1 (it) * 2016-12-05 2018-06-05 Certech Spa Con Socio Unico Metodo ed attrezzatura per la trasformazione di un mulino.
IT201800003874A1 (it) * 2018-03-22 2019-09-22 Certech Spa Con Socio Unico Mulino per materiali ceramici
CN108855539A (zh) * 2018-06-23 2018-11-23 宁波中科远东催化工程技术有限公司 一种节水型高固含量浆体的生产线及生产方法
CN111570065A (zh) * 2020-05-29 2020-08-25 济南大学 粉体制备研磨机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE259540C (it) *
SE410561B (sv) * 1973-04-13 1979-10-22 Boliden Ab Anleggning for autogen eller semiautogen malning av styckeformigt material, serskilt malm
JPS5725272B2 (it) * 1973-05-01 1982-05-28
US4603814A (en) * 1985-03-15 1986-08-05 Inco Alloys International, Inc. System for discharging rotary mills

Also Published As

Publication number Publication date
ITRE20050011A1 (it) 2006-08-12
CN1817600A (zh) 2006-08-16
ATE442906T1 (de) 2009-10-15
EP1690597A1 (en) 2006-08-16
PL1690597T3 (pl) 2010-02-26
ES2331586T3 (es) 2010-01-08
DE602006009161D1 (de) 2009-10-29
CN1817600B (zh) 2014-12-24
PT1690597E (pt) 2009-11-18
RU2394650C2 (ru) 2010-07-20
RU2006101762A (ru) 2007-07-27

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