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NL2032389A - Energy-saving thermal insulation device for microwave kiln and method for preparing same - Google Patents

Energy-saving thermal insulation device for microwave kiln and method for preparing same Download PDF

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Publication number
NL2032389A
NL2032389A NL2032389A NL2032389A NL2032389A NL 2032389 A NL2032389 A NL 2032389A NL 2032389 A NL2032389 A NL 2032389A NL 2032389 A NL2032389 A NL 2032389A NL 2032389 A NL2032389 A NL 2032389A
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NL
Netherlands
Prior art keywords
wall
ceramic
layer
thermal insulation
infrared reflective
Prior art date
Application number
NL2032389A
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English (en)
Other versions
NL2032389B1 (en
Inventor
Wang Hailong
Zhou Yabo
Fan Bingbing
Song Limeng
Min Zhiyu
Chen Yongqiang
Song Bo
Li Mingliang
Wang Hailiang
Li Hongxia
Zhang Rui
Original Assignee
Univ Zhengzhou
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Publication of NL2032389A publication Critical patent/NL2032389A/en
Application granted granted Critical
Publication of NL2032389B1 publication Critical patent/NL2032389B1/en

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    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
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    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/0016—Chamber type furnaces
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    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/6261—Milling
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/6342—Polyvinylacetals, e.g. polyvinylbutyral [PVB]
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63488—Polyethers, e.g. alkylphenol polyglycolether, polyethylene glycol [PEG], polyethylene oxide [PEO]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0028—Microwave heating

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  • Oral & Maxillofacial Surgery (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Thermal Insulation (AREA)

Claims (8)

  1. Conclusies 1 Energiebesparende, thermisch isolerende inrichting voor magnetronovens, die een doos omvat die is voorzien van een opening en een deksel voor het afdekken van de opening van de doos, waarbij de doos een binnenste wand en een buitenste wand omvat, en waarbij een opening tevoren is aangebracht tussen de binnenste wand en de buitenste wand; waarbij het deksel de bovenste uiteinden afdekt van de binnenste wand en de buitenste wand en een ruimte om iets in onder te brengen vormt met de opening, en waarbij de ruimte om iets in onder te brengen is gevuld met een tussenliggende, thermisch isolerende laag; waarbij een binnenoppervlak van de binnenste wand is voorzien van een eerste infrarood reflecterende keramische laag, en waarbij een oppervlak van het deksel dat van een passende vorm is voorzien om te passen op de doos is voorzien van een tweede infrarood reflecterende keramische laag.
  2. 2 Energiebesparende, thermisch isolerende inrichting voor magnetronovens volgens conclusie 1, waarbij een opening voor het meten van de temperatuur wordt verschaft in het midden van het deksel.
  3. 3 Energiebesparende, thermisch isolerende inrichting voor magnetronovens volgens conclusie 1, waarbij de tussenliggende, thermisch isolerende laag is vervaardigd van een keramische aerogel, waarbij de binnenste wand een eerste thermisch isolerende laag is die is vervaardigd van een poreuze keramiek; en waarbij de buitenste wand een tweede thermisch isolerende laag is die is vervaardigd van de poreuze keramiek.
  4. 4 Energiebesparende, thermisch isolerende inrichting voor magnetronovens volgens conclusie 1, waarbij het deksel een dekselromp omvat en een rondom lopende rand die zich bevindt rondom een omlopend oppervlak van de dekselromp; waarbij de dekselromp het volgende omvat: een eerste deksellaag, een thermisch isolerende deksellaag en een tweede deksellaag, die zijn aangebracht van boven naar beneden, in volgorde;
    waarbij de tweede deksellaag is aangebracht aan een zijde om te passen op de doos; en waarbij een buitenoppervlak van de tweede deksellaag is voorzien van de tweede infrarood reflecterende keramische laag.
  5. 5 Werkwijze voor het vervaardigen van de energiebesparende, thermisch isolerende inrichting voor magnetronovens volgens een van de conclusies 1 - 4, die het volgende omvat: S10, het mengen van poeders van titaanoxide, yttriumoxide, ceriumoxide en lanthaanoxide in een bepaalde verhouding, het toevoegen van een zekere hoeveelheid alcohol en polyetheenglycol 800, en het uitvoeren van een primaire menghandeling in een kogelmolen; het toevoegen van polyvinylbutyral en butylbenzylftalaat, en het uitvoeren van een secundaire menghandeling in een kogelmolen; en het uitvoeren van ontschuimen onder vacuüm, voor het verkrijgen van een infrarood reflecterende keramische slurry; S20, het voorbereiden van de binnenste wand met de poreuze keramiek, het aanbrengen van de infrarood reflecterende keramische slurry op een binnenoppervlak van een keramische plaat van de binnenste wand, voor het vormen van een eerste infrarood reflecterende keramische laag, het drogen gedurende 2 - 4 uur, en het sinteren bij een hoge temperatuur gedurende 1 - 3 uur, voor het verkrijgen van een samengestelde, keramische, thermisch isolerende laag van de binnenste wand; S30, het voorbereiden van de buitenste wand met de poreuze keramiek, en het aanbrengen van de keramische aerogel tussen de binnenste wand en de buitenste wand, voor het vormen van de tussenliggende, thermisch isolerende laag; en S40, het aanbrengen van de infrarood reflecterende keramische slurry op een oppervlak van een keramische plaat van het deksel dat moet passen op de doos, voor het vormen van de tweede infrarood reflecterende keramische laag, gevolgd door drogen gedurende 2 - 4 uur, en sinteren bij een hoge temperatuur gedurende 1 - 3 uur, voor het verkrijgen van een samengestelde, keramische, thermisch isolerende laag van het deksel.
  6. 6 Werkwijze volgens conclusie 5, waarbij in stap S10 de poeders van titaanoxide, yttriumoxide, ceriumoxide en lanthaanoxide worden gemengd in een molverhouding van 7:1:1:1, en een deeltjesgrootte hebben van kleiner dan 1 um.
  7. 7 Werkwijze volgens conclusie 6, waarbij in stap S10 15 - 30 gewichtsprocent van de alcohol en 0,5 - 1 gewichtsprocent van de polyetheenglycol 800 worden toegevoegd, en waarbij de primaire menghandeling in een kogelmolen wordt uitgevoerd bij 100 - 200 omwentelingen per minuut gedurende 4 - 6 uur; waarbij 2 gewichtsprocent van een mengsel van de polyvinylbutyral en de butylbenzylftalaat een massaverhouding van 1:1 wordt toegevoegd, en waarbij de secundaire menghandeling in een kogelmolen wordt uitgevoerd bij 100 - 200 omwentelingen per minuut gedurende 4 - 6 uur; waarbij het ontschuimen onder vacuüm wordt uitgevoerd gedurende 30 minuten, voor het verkrijgen van de infrarood reflecterende keramische slurry.
  8. 8 Werkwijze volgens conclusie 7, waarbij in stap S20, nadat de infrarood reflecterende keramische slurry is aangebracht op het binnenoppervlak van de keramische plaat van de binnenste wand, voor het vormen van de eerste infrarood reflecterende keramische laag, wordt gedroogd bij 80 °C gedurende 2 - 4 uur, en vervolgens wordt gesinterd bij een hoge temperatuur van 1.000 — 1.300 °C gedurende 1 - 3 uur, voor het verkrijgen van de samengestelde, keramische, thermisch isolerende laag van de binnenste wand; waarbij in stap S40, nadat de infrarood reflecterende keramische slurry is aangebracht op het oppervlak van de keramische plaat van het deksel dat moet passen op de doos, voor het vormen van de tweede infrarood reflecterende keramische laag, wordt gedroogd bij 80 °C gedurende 2 - 4 uur, en vervolgens wordt gesinterd bij een hoge temperatuur van 1.000 — 1.300 °C gedurende 1 - 3 uur, voor het verkrijgen van de samengestelde, keramische, thermisch isolerende laag van het deksel. 8 Werkwijze volgens conclusie 8, waarbij de binnenste wand en de buitenste wand zijn vervaardigd van één van mulliet en een siliciumoxynitride-keramiek met een porositeit van 15 - 30 %; waarbij de binnenste wand een dikte heeft van 5 - 10 mm, waarbij de buitenste wand een dikte heeft van 10 - 150 mm, en waarbij de eerste infrarood reflecterende keramische laag en de tweede infrarood reflecterende keramische laag een dikte hebben van 1 - 2 mm.
    10 Werkwijze volgens conclusie 9, waarbij in stap S30 de keramische aerogel die wordt aangebracht tussen de binnenste wand en de buitenste wand er een is van mulliet en siliciumcarbide, en waarbij de tussenliggende, thermisch isolerende laag een dikte heeft van 15 - 30 mm.
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