EP1807367A1 - Verfahren zur herstellung von glasuren mit komponenten in form von teilchen verschiedener grösse und so erhaltene glasuren - Google Patents

Verfahren zur herstellung von glasuren mit komponenten in form von teilchen verschiedener grösse und so erhaltene glasuren

Info

Publication number
EP1807367A1
EP1807367A1 EP05794605A EP05794605A EP1807367A1 EP 1807367 A1 EP1807367 A1 EP 1807367A1 EP 05794605 A EP05794605 A EP 05794605A EP 05794605 A EP05794605 A EP 05794605A EP 1807367 A1 EP1807367 A1 EP 1807367A1
Authority
EP
European Patent Office
Prior art keywords
glazes
components
residue
ground
glaze
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.)
Ceased
Application number
EP05794605A
Other languages
English (en)
French (fr)
Inventor
Guido Bitossi
Marco Bitossi
Gabriele Montanari
Laura Niccolai
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.)
Colorobbia SpA
Original Assignee
Colorobbia 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 Colorobbia SpA filed Critical Colorobbia SpA
Publication of EP1807367A1 publication Critical patent/EP1807367A1/de
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/02—Pretreated ingredients
    • C03C1/026—Pelletisation or prereacting of powdered raw materials

Definitions

  • glazes are a product of special interest in view of the characteristics of brightness, mechanical strength and coloration that can be imparted to finished products by their application to the semi-finished article.
  • glazes normally consist of:
  • the present invention enables the aforesaid disadvantages to be overcome and the desired glazes to be prepared by mixing the necessary components already pre-ground in the required amounts and form.
  • the various components are ground separately until powders are obtained with dimensions aimed at the final technical result and application, and varying, depending on the application, from about 0 to 5 wt% at 45 ⁇ for glazes and industrial silk-screen printing and from 0 to 1 wt% at 20 ⁇ for glazes and colours for particular applications such as glass, third firing etc. and in any case always depending on the requirements for later use.
  • the aforestated grinding can be undertaken using any grinding instrument suitable for the purpose (mills, pressure roller pulverizers, jet mills, track mills and other systems etc.) and can be undertaken under dry or wet conditions.
  • Pressure roller pulverizers have proved to be particularly advantageous for grinding as they possess a system of in-line high pressure mills with a wind separator. Grinding is conducted by means of a semi-continuous system i.e. continuous for every type of raw material and with stop and change on changing the component.
  • Grinding is continued as aforesaid until powders are obtained with dimensions less than 45 ⁇ . In accordance with a particular embodiment of the process, grinding can proceed until powders with dimensions less than 20 ⁇ are obtained.
  • the components in powder form thus obtained can be stored in suitable storage locations and then mixed in the required amounts with possible addition of pigments (which are generally already available in a suitable form or in a form that can be adapted to the required dimensions using other grinding systems).
  • Frit 1 CaO 8.7%, MgO 1.9 %, PbO 2.7%, K 2 O 5.3 %, Na 2 O 0.5%, ZnO 8.4%, AI 2 O 3
  • the mixture was applied by disc application for single-firing at a density of 1650 g/L on a white paste support and fired with a cycle of 118O 0 C for 45 minutes.
  • a glaze mixture identical to the aforesaid one was prepared by simultaneously grinding together the various components in accordance with the usual techniques. The mixture was then applied in a similar manner to that described in example 1 ; the glaze obtained had visually the same surface coating and colour characteristics as that obtained with the process of the invention.
  • a glossy glaze was prepared consisting of: 3 frits, kaolin and micronized zirconium.
  • Frit 1 CaO 4.8%, K 2 O 2.5 %, Na 2 O 18.5 %, AI 2 O 3 10.1%, B 2 O 3 12.5 %, Fe 2 O 3 0.1%,
  • Frit 2 CaO 5.3%, MgO 0.3 %, K 2 O 2.5 %, Na 2 O 5.0%, ZnO 6.3%, AI 2 O 3 6.1% , B 2 O 3
  • Frit 3 CaO 4.3%, K 2 O 1.0 %, Na 2 O 5.2%, ZnO 1.1%, AI 2 O 3 7.5%, B 2 O 3 12.4 %, BaO
  • Frit 1 quantity 15.7% by weight hourly throughput 3.5 t/h final powder size 1.9% residue at 45 micron
  • Frit 2 quantity 50.7% by weight hourly throughput 3.5 t/h final powder size 2.1% residue at 45 micron
  • a glaze mixture identical to the aforesaid one, was prepared by simultaneously grinding together the various components in accordance with the usual techniques.
  • This glaze has better hardness and stain resistance surface characteristics than known glazes, such characteristics being achieved, as described in the invention, precisely by using raw materials of different particle size distribution targeted for this purpose, A matt glaze was prepared consisting of: 2 frits, clay, dolomite, wollastonite, nepheline, zinc oxide, quartz and corundum in three different particle sizes
  • Frit 1 CaO 12.4%, K 2 O 0.4 %, Na 2 O 5.4%, ZnO 10.0%, AI 2 O 3 14.2%, Fe 2 O 3 0.2%,
  • Nepheline quantity 10.0% by weight hourly throughput 4.1 t/h final powder size 0.2% residue at 45 micron
  • the mixture was applied by disc application at a density of 1680 g/L on a white paste support for single-firing and fired with a cycle of 1170-118O 0 C for 45 minutes. Characterization of the glaze obtained
  • the glaze has better abrasion and staining resistance characteristics than glazes of similar chemical composition due to the use of components chosen with targeted differentiated particle size distribution.
  • Abrasion resistance is >PEI 4 and in the stain resistance test no visible traces of stains were found according to the standard UNI EN ISO 1045/14.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Disintegrating Or Milling (AREA)
EP05794605A 2004-09-16 2005-09-16 Verfahren zur herstellung von glasuren mit komponenten in form von teilchen verschiedener grösse und so erhaltene glasuren Ceased EP1807367A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI20040191 ITFI20040191A1 (it) 2004-09-16 2004-09-16 Processo per la produzione di smalti comprendeti componenti a diversa granulometria e composizioni cosi' ottenute
PCT/EP2005/054610 WO2006030026A1 (en) 2004-09-16 2005-09-16 Process for the production of glazes comprising components in the form of particle of various size and the glazes thus obtained

Publications (1)

Publication Number Publication Date
EP1807367A1 true EP1807367A1 (de) 2007-07-18

Family

ID=35447486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05794605A Ceased EP1807367A1 (de) 2004-09-16 2005-09-16 Verfahren zur herstellung von glasuren mit komponenten in form von teilchen verschiedener grösse und so erhaltene glasuren

Country Status (4)

Country Link
EP (1) EP1807367A1 (de)
IT (1) ITFI20040191A1 (de)
RU (1) RU2007114048A (de)
WO (1) WO2006030026A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2311365C1 (ru) * 2006-05-29 2007-11-27 Юлия Алексеевна Щепочкина Глазурь
RU2318744C1 (ru) * 2006-05-31 2008-03-10 Юлия Алексеевна Щепочкина Глазурь
RU2479554C1 (ru) * 2011-12-14 2013-04-20 Юлия Алексеевна Щепочкина Силикатное покрытие для керамического кирпича
CN113233766B (zh) * 2021-06-22 2022-08-05 景德镇陶瓷大学 一种长石质瓷装饰用立体花釉及其应用方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1262947B (it) * 1992-06-17 1996-07-22 Bayer Italia Spa Granulati, processo per la loro preparazione e loro impiego
KR950002231B1 (ko) * 1992-12-29 1995-03-15 이상철 옹기용 무연 유약의 제조방법
US6206958B1 (en) * 1998-07-17 2001-03-27 Jeneric/Pentron, Incorporated Dental porcelain compositions

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2006030026A1 *

Also Published As

Publication number Publication date
ITFI20040191A1 (it) 2004-12-16
WO2006030026A1 (en) 2006-03-23
RU2007114048A (ru) 2008-10-27

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