hordhaca aasaasiga ah ee lebenka dhoobada refractory

Leben dhoobo ah waxay tixraacaan alaabada dhoobada leh ee Al2O3 ka kooban 30% -40% aluminium silicate alaabta. Leben dhoobo ah ayaa laga sameeyaa 50% dhoobo jilicsan iyo 50% dhoobada adag ee dhoobada, kuwaas oo loo habeeyey iyadoo loo eegayo shuruudaha cabbirka walxaha qaarkood. Ka dib marka la qaabeeyo oo la qalajiyo, waxaa lagu shidaa heerkul sare oo ah 1300 ~ 1400 ℃. Halabuurka macdanta ee leben dhoobada ayaa inta badan kaolinite (Al2O3 · 2SiO2 · 2H2O) iyo 6% ~ 7% wasakh (oxides of potassium, sodium, calcium, titanium, iyo iron). Habka toogashada ee lebenka dhoobada ah ayaa inta badan ah habka fuuq-baxa joogtada ah iyo kala-goynta kaolin si loo sameeyo crystals (3Al2O3 · 2SiO2). SiO2 iyo Al2O3 ee lebenka dhoobada ah waxay sameeyaan silicate yar-yar oo dhalaalaysa oo leh wasakh inta lagu guda jiro habka toogashada, kaas oo ku hareeraysan kiristaalo mullite ah.

Lebenka dhoobada ah waa alaab aysiidh liidato oo liidata, kuwaas oo iska caabin kara nabaad-guurka gaaska aysiidhka ah iyo gaaska aysiidhka ah, oo ay xoogaa daciif ah iska caabbinta walxaha alkaline-ka ah. Leben dhoobo ah waxay leeyihiin sifooyin kulayl wanaagsan waxayna u adkaystaan ​​qabow degdeg ah iyo kulayl degdeg ah.