EP0916462A2 - Verfahren und Vorrichtung zum Vorbereiten von pulvrigen Farbstoffen zur Herstellung von Kacheln, und dadurch gewonnene Farbstoffe - Google Patents

Verfahren und Vorrichtung zum Vorbereiten von pulvrigen Farbstoffen zur Herstellung von Kacheln, und dadurch gewonnene Farbstoffe Download PDF

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Publication number
EP0916462A2
EP0916462A2 EP98203671A EP98203671A EP0916462A2 EP 0916462 A2 EP0916462 A2 EP 0916462A2 EP 98203671 A EP98203671 A EP 98203671A EP 98203671 A EP98203671 A EP 98203671A EP 0916462 A2 EP0916462 A2 EP 0916462A2
Authority
EP
European Patent Office
Prior art keywords
coloured
granules
fine particles
materials
ceramic
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
EP98203671A
Other languages
English (en)
French (fr)
Other versions
EP0916462B1 (de
EP0916462A3 (de
Inventor
Bigi Ermes
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.)
L B Officine Meccaniche SpA
Original Assignee
L B Officine Meccaniche SpA
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 L B Officine Meccaniche SpA filed Critical L B Officine Meccaniche SpA
Publication of EP0916462A2 publication Critical patent/EP0916462A2/de
Publication of EP0916462A3 publication Critical patent/EP0916462A3/de
Application granted granted Critical
Publication of EP0916462B1 publication Critical patent/EP0916462B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/82—Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids

Definitions

  • This invention relates in a totally general manner to ceramic tile manufacture and more particularly to the preparation of materials in powder form which constitute the basic or starting substance for producing said tiles.
  • the invention relates to a method and the relative implementation means for preparing coloured materials in powder form used in the manufacture of fine porcellainized ceramic stone tiles, single-fired tiles and other similar tiles.
  • said basic or starting substances consist of masses of granules of virtually uniform dimensions and of a specific coloration, so that single-colour tiles are obtained if granules of a single type are used, whereas multi-colour tiles are obtained if granules of different types are used.
  • the final atomized material cost is relatively high because colouring the entire granule mass results in a wastage of pigments and colorants, the cost of which is much higher than that of the other constituent materials of the concentrated coloured slip.
  • the main object of this invention is to obviate the aforesaid by the operating system claimed in claims 1 to 4 and the relative implementation means claimed in claims 5 to 12, by which the materials claimed in claims 13 to 19 are obtained.
  • the materials of the invention are obtained by a dry or substantially dry technique, as will be apparent from the ensuing description.
  • the method of the invention provides a mass of neutral material in powder form, ie consisting of granules obtained by a usual atomization or granulation operation such as to obtain granules having a size of the order of 1 mm starting from a slip not containing pigments or other colorants, said granules then being mixed with a metered quantity of fine coloured particles of much smaller size than said granules, the mixing continuing until the outer surface of these latter is completely covered with a continuous layer of said fine particles.
  • a mass of neutral material in powder form ie consisting of granules obtained by a usual atomization or granulation operation such as to obtain granules having a size of the order of 1 mm starting from a slip not containing pigments or other colorants, said granules then being mixed with a metered quantity of fine coloured particles of much smaller size than said granules, the mixing continuing until the outer surface of these latter is completely covered with a continuous layer of said fine particles
  • said mixing is carried out completely under dry conditions, its duration being protracted until said fine particles have been received, or rather embedded, in the surface layer of the granules, which hence assume the coloration of said particles.
  • the fine particles have a size indicatively between 2 and 300 microns.
  • the mixing time depends on the chosen working parameters, such as the type and operating speed of the machinery used, the granule and particle size, and the working temperature.
  • mixing is carried out substantially under dry conditions, and envisages adding to the granules and fine particles a fluid substance acting as a binder, ie able to cause the fine coloured particles to adhere both to each other and to the outer surface of the granules.
  • the fine particles have a size indicatively of between 125 and 1000 microns.
  • the covering time is less than that in the aforesaid first embodiment.
  • the interior or active region of the corresponding machinery is surface-treated or coated such that the binder does not adhere to it.
  • water is preferably used as the binder.
  • the coloured material in powder form obtained by the invention is of low cost in that the most valuable material, ie the colorant, constitutes only a small part of the body of the final granule.
  • tiles are obtained, for example of fine porcellainized ceramic stone, the characteristics of which are of the same type as those which characterise the tiles formed from atomized materials prepared in accordance with the known art.
  • Figure 1 shows a frame 1 having three platforms positioned at different heights and indicated by the reference numerals 2, 3 and 4 starting from the lower platform.
  • the upper platform 4 supports an ordered plurality of vessels (not shown) for containing coloured ceramic granules of different colorations, in the form of fine particles in the dry state;
  • the intermediate platform 3 supports a hopper 5 which can be connected at choice to said overlying vessels by a suitable sealed conduit, such as a salient flexible trunk;
  • the lower platform 2 supports a mixer 6.
  • This latter comprises a rotatable drum 7 of horizontal axis supported by rollers 9 and rotated, preferably with continuous motion, by a geared motor unit with incorporated variable speed drive.
  • Said drum 7 has a stationary loading mouth and an off-centre discharge mouth from which there extends a tubular body 11, the longitudinal development of which has a zig-zag configuration.
  • a continuously moving motorized conveyor belt 12 the upstream end of which is connected to a usual atomizer or ceramic granulator, and a pipe 13 connected to the overlying hopper 5 by way of a metering extractor 14 provided with a programmable weigher.
  • Said belt 12 provides a constant quantity, per unit of time, of an atomized or granulated ceramic material with a moisture content from 4 to 6% which is of neutral type, ie does not contain pigments or colorants, said metering extractor 14 providing, in the same unit of time, a quantity of pigment of the desired coloration which is a determined proportion of the quantity of atomized or granulated material introduced into the drum 7.
  • Said atomized or granulated material is in the form of granules having statistically the same size, of the order of 1 mm, said pigment being in the form of dry fine particles also statistically of the same size, this being between 2 and 1000 microns.
  • the plant, or apparatus is completed by a stationary collection chamber 15 for the coloured material leaving said body 11, which rotates rigidly with the drum 7, and a continuously operating conveyor belt 16 for withdrawing said coloured material.
  • the chamber 15 is provided with a suction unit (not shown) for recovering and recycling the excess fine particles and for removing those suspended in the air.
  • a suction unit (not shown) for recovering and recycling the excess fine particles and for removing those suspended in the air.
  • a cowling 17 for guiding the falling material, the belt 16 terminating in a bank of storage tanks (not shown) for storing the powder materials of different coloration.
  • said fine pigment particles are embedded under dry conditions into the surface layer of the granules of neutral ceramic material, said embedding stage proceeding until said granules have been completely covered with pigment.
  • a binder is added to said granules and to said particles, its purpose being to cause the said fine pigment particles to adhere both to each other and to the outer surface of the granules, so that on leaving the plant these latter are enclosed by a thin coloured shell.
  • the fine pigment particles have a size of between 125 and 1000 microns.
  • the plant in this case comprises a vessel with relative adjustable dispenser, for containing and feeding said water.
  • drum 7 and said body 11 are preferably coated with an anti-adhesion material, heating means such as a hot air blower being associated with the collection chamber 15 to remove the excess water.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Glanulating (AREA)
  • Glass Compositions (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Finishing Walls (AREA)
EP98203671A 1997-11-11 1998-10-30 Verfahren und Vorrichtung zum Vorbereiten von pulvrigen Farbstoffen zur Herstellung von Kacheln, und dadurch gewonnene Farbstoffe Expired - Lifetime EP0916462B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE970085 1997-11-11
IT97RE000085A IT1297756B1 (it) 1997-11-11 1997-11-11 Metodo e attrezzatura per la preparazione di materiali colorati in polvere per la fabbricazione di piastrelle e materiali colorati cosi'

Publications (3)

Publication Number Publication Date
EP0916462A2 true EP0916462A2 (de) 1999-05-19
EP0916462A3 EP0916462A3 (de) 2000-09-13
EP0916462B1 EP0916462B1 (de) 2004-01-21

Family

ID=11399125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98203671A Expired - Lifetime EP0916462B1 (de) 1997-11-11 1998-10-30 Verfahren und Vorrichtung zum Vorbereiten von pulvrigen Farbstoffen zur Herstellung von Kacheln, und dadurch gewonnene Farbstoffe

Country Status (5)

Country Link
EP (1) EP0916462B1 (de)
AT (1) ATE258106T1 (de)
DE (1) DE69821193T2 (de)
ES (1) ES2212215T3 (de)
IT (1) IT1297756B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550501B1 (de) * 2003-12-31 2007-12-12 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung eines fliessfähigen pulverförmigen Materials
EP1772243A3 (de) * 2005-10-04 2009-01-28 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Verfahren und Anlage zum kontinuierlichen Vorbereiten von pulvrigen Farbstoffen für die Herstellung von keramischen Gegenständen
WO2014013446A1 (en) 2012-07-18 2014-01-23 Confetti Cristian System and method for the continuous preparation of colored materials in powder form for the manufacture of ceramic articles
CN113058497A (zh) * 2021-03-26 2021-07-02 龙泉市九龙青瓷有限公司 一种釉料调试装置及调试方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015079077A1 (es) * 2013-11-28 2015-06-04 Cales De La Plana, S.A. Procedimiento de obtención de gránulos para la fabricación de baldosas cerámicas
ES2472140B2 (es) 2014-02-07 2015-01-29 Kerajet S.A. Método de proyección de sólidos sobre una superficie

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1792058A (en) * 1930-01-13 1931-02-10 Little Inc A Method of making colored granules and the article made thereby
GB619296A (en) * 1946-11-30 1949-03-07 John Michael Lloyd A new or improved process and apparatus for blending comminuted solid material with other solid materials
JPS58143051A (ja) * 1982-02-16 1983-08-25 中川　秀一 瓦
JPS6027642A (ja) * 1983-07-25 1985-02-12 前田陶料株式会社 陶磁器タイル状品の製造方法
GB8328082D0 (en) * 1983-10-20 1983-11-23 Hmr Group Ltd Glass granules
JPS649839A (en) * 1987-07-01 1989-01-13 Nisshin Steel Co Ltd Production of colored translucent ceramic
JPH0729863B2 (ja) * 1989-11-09 1995-04-05 ナショナル住宅産業株式会社 発泡セラミック板の製法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550501B1 (de) * 2003-12-31 2007-12-12 L.B. Officine Meccaniche S.p.A. Verfahren zur Herstellung eines fliessfähigen pulverförmigen Materials
EP1772243A3 (de) * 2005-10-04 2009-01-28 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Verfahren und Anlage zum kontinuierlichen Vorbereiten von pulvrigen Farbstoffen für die Herstellung von keramischen Gegenständen
WO2014013446A1 (en) 2012-07-18 2014-01-23 Confetti Cristian System and method for the continuous preparation of colored materials in powder form for the manufacture of ceramic articles
CN104487162A (zh) * 2012-07-18 2015-04-01 C·孔费蒂 用于连续制备用来制造陶瓷制品的粉末形式的有色材料的系统和方法
CN104487162B (zh) * 2012-07-18 2017-03-15 皮乐嘉公司 用于连续制备用来制造陶瓷制品的粉末形式的有色材料的系统和方法
CN113058497A (zh) * 2021-03-26 2021-07-02 龙泉市九龙青瓷有限公司 一种釉料调试装置及调试方法

Also Published As

Publication number Publication date
EP0916462B1 (de) 2004-01-21
IT1297756B1 (it) 1999-12-20
DE69821193D1 (de) 2004-02-26
ITRE970085A1 (it) 1999-05-11
ATE258106T1 (de) 2004-02-15
ES2212215T3 (es) 2004-07-16
EP0916462A3 (de) 2000-09-13
ITRE970085A0 (it) 1997-11-11
DE69821193T2 (de) 2004-06-09

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