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WO1991008177A1 - Traitement de materiaux ceramiques a l'aide de hautes frequences des zones de micro-ondes et uhf a la fois modulees et non modulees - Google Patents

Traitement de materiaux ceramiques a l'aide de hautes frequences des zones de micro-ondes et uhf a la fois modulees et non modulees Download PDF

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Publication number
WO1991008177A1
WO1991008177A1 PCT/GR1990/000009 GR9000009W WO9108177A1 WO 1991008177 A1 WO1991008177 A1 WO 1991008177A1 GR 9000009 W GR9000009 W GR 9000009W WO 9108177 A1 WO9108177 A1 WO 9108177A1
Authority
WO
WIPO (PCT)
Prior art keywords
modulated
uhf
firing
frequencies
processing
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
PCT/GR1990/000009
Other languages
English (en)
Inventor
Ioannis Gyllis
Thomas Xenos
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1991008177A1 publication Critical patent/WO1991008177A1/fr
Priority to BG094897A priority Critical patent/BG94897A/bg
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes

Definitions

  • the present innovation introduces radio frequencies for the defrost and the drying of raw matterials.
  • the present innovation introduces the use of radio frequencies so as to provide the ceramic material with the energy required to obtain its final molecular structure i .e. the "firing" of the ceramic material.
  • Ceramics are generally considered to be dielectric materials. When such a material is exposed to electromagnetic radiation of a given frequency (in the present case UHF or microwaves) then a higher or lower temperature is produced. A correct selection of the energy level and the frequency of the electromagnetic wave gives a dramatic increase of the heat in the mass of the dielectric.
  • a given frequency in the present case UHF or microwaves
  • the hardware required for the application of this method consists of :
  • the shaped product placed on the conveyor enters the chamber where by means of the electromagnetic radiation the water present in the mass is evaporated and is being removed by the drafts created with the electric fans. Then the "firing" process begins by means of high power electromagnetic radiation modulated if necessary .
  • the frequencies employed are closely related to the mineral present in the mass, the thickness of the mass and the geometrical features of the product.
  • the power of the electromagnetic wave to be radiated is closely related to electromagnetic features of the ceramic mass, and is controlled by means of a microprocessor.
  • the necessary power distribution is obtained by means of the antenna system and the number of electromagnetic sources employed and is determined by the time required for the "firing" process.
  • the required frequency spectrum and bandwidth is obtained by means of modulation, while the various modes by mode stirrers. The whole procedure is computer controlled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

L'invention prévoit l'emploi de hautes fréquences modulées ou non modulées des zones de micro-ondes et UHF, dans le traitement de matériaux céramiques. Le terme ''traitement'' signifie le dégivrage et le séchage de matière première lorsque cela est nécessaire, le séchage du produit façonné et la ''cuisson'' afin d'obtenir sa structure moléculaire finale. Le terme ''céramique'' signifie matériau ''inorganique non métallique''.
PCT/GR1990/000009 1989-11-28 1990-11-28 Traitement de materiaux ceramiques a l'aide de hautes frequences des zones de micro-ondes et uhf a la fois modulees et non modulees Ceased WO1991008177A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG094897A BG94897A (bg) 1989-11-28 1991-07-26 Обработка на керамични материали с модулирани или немодулирани радиочестоти от микровълновия и ултракъсовълновия обхват

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR900200248 1989-11-28
GR90200248U GR2000727Y (en) 1989-11-28 1989-11-28 Ceramic materials treatment by radio frequency

Publications (1)

Publication Number Publication Date
WO1991008177A1 true WO1991008177A1 (fr) 1991-06-13

Family

ID=10940511

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GR1990/000009 Ceased WO1991008177A1 (fr) 1989-11-28 1990-11-28 Traitement de materiaux ceramiques a l'aide de hautes frequences des zones de micro-ondes et uhf a la fois modulees et non modulees

Country Status (5)

Country Link
EP (1) EP0456786A1 (fr)
AU (1) AU6753490A (fr)
BG (1) BG94897A (fr)
GR (1) GR2000727Y (fr)
WO (1) WO1991008177A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005186A1 (fr) * 1996-07-25 1998-02-05 Ea Technology Limited Traitement de materiaux a frequences radioelectriques et a hyperfrequences
WO2003078322A1 (fr) * 2002-03-19 2003-09-25 Investment & Partners Inc. Procede de fabrication d'un materiau silico-alumineux
WO2016105293A3 (fr) * 2014-12-26 2016-08-11 ECZACIBAŞI YAPI GEREÇLERİ SANAYİ VE TİCARET ANONİM ŞİRKETİ ANONIM SIRKETi Procédé relatif à l'utilisation de four à micro-ondes dans la production d'article sanitaire en céramique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2331663A1 (de) * 1973-06-22 1975-01-16 Albert Refratechnik Verfahren zum herstellen chemisch gebundener feuerfester formkoerper
FR2320920A1 (fr) * 1975-08-11 1977-03-11 Nippon Steel Corp Procede et dispositif pour le frittage de materiaux refractaires
US4140887A (en) * 1977-05-09 1979-02-20 Special Metals Corporation Method for microwave heating
DE3518914A1 (de) * 1985-05-25 1986-11-27 Christof Dipl.-Ing. Ropertz (FH), 7050 Waiblingen Mikrowellen-trockner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2331663A1 (de) * 1973-06-22 1975-01-16 Albert Refratechnik Verfahren zum herstellen chemisch gebundener feuerfester formkoerper
FR2320920A1 (fr) * 1975-08-11 1977-03-11 Nippon Steel Corp Procede et dispositif pour le frittage de materiaux refractaires
US4140887A (en) * 1977-05-09 1979-02-20 Special Metals Corporation Method for microwave heating
DE3518914A1 (de) * 1985-05-25 1986-11-27 Christof Dipl.-Ing. Ropertz (FH), 7050 Waiblingen Mikrowellen-trockner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005186A1 (fr) * 1996-07-25 1998-02-05 Ea Technology Limited Traitement de materiaux a frequences radioelectriques et a hyperfrequences
AU739805B2 (en) * 1996-07-25 2001-10-18 Anglo Operations Limited Radio-frequency and microwave-assisted processing of materials
US6350973B2 (en) 1996-07-25 2002-02-26 Ea Technology Limited Radio-frequency and microwave-assisted processing of materials
WO2003078322A1 (fr) * 2002-03-19 2003-09-25 Investment & Partners Inc. Procede de fabrication d'un materiau silico-alumineux
WO2016105293A3 (fr) * 2014-12-26 2016-08-11 ECZACIBAŞI YAPI GEREÇLERİ SANAYİ VE TİCARET ANONİM ŞİRKETİ ANONIM SIRKETi Procédé relatif à l'utilisation de four à micro-ondes dans la production d'article sanitaire en céramique

Also Published As

Publication number Publication date
EP0456786A1 (fr) 1991-11-21
AU6753490A (en) 1991-06-26
BG94897A (bg) 1993-12-24
GR2000727Y (en) 1991-10-10

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