Dab tsi yog Cov Refractories nquag siv hauv iav Melting Kilns
Refractoryyog lub ntsiab tseem ceeb ntawm iav melting kiln, uas muaj kev txiav txim siab ntawm cov iav zoo, kev siv zog thiab cov nqi khoom. Lub neej yav tom ntej ntawm iav melting tshuab yog nyob ntawm qee yam ntawm kev nce qib ntawm refractory manufacturing technology thiab kev txhim kho cov khoom zoo.
Refractories feem ntau siv hauv cov iav melting kilns feem ntau muab faib ua plaub pawg: fused cam khwb cia refractories, sintered refractories, amorphous refractories thiab thermal rwb thaiv tsev refractories. Txhua chav kawm ntawm cov khoom muaj ntau hom. Cov tshuaj lom neeg muaj pes tsawg leeg, lub cev muaj zog, qhov yuam kev loj thiab zoo li hom refractories yuav tsum ua tau raws li cov qauv hauv tebchaws lossis cov qauv kev lag luam, thiab cov kev hloov kho tshiab yuav tsum raug xaiv, txwv tsis pub nws yuav tsum tsis txhob xa.
Silicon cib siv ntau dua hauv cov iav melting kiln, thiab cov khoom tseem ceeb yog silicon dioxide (SiO2). silica cib siv rau hauv iav melting kiln xav tau SiO2 cov ntsiab lus ntau dua 94%, qhov siab tshaj plaws siv kub yog li 1600 ~ 1650 degree, thiab qhov ceev yog 1.8 ~ 1.95g / cm3. Qhov pom tseeb porosity yuav tsum tsawg dua 22%, thiab qhov loj dua qhov porosity, qhov phem ntawm silicon cib. Feem ntau ntawm cov tsos ntawm silicon cib yog dawb siv lead ua, lub microscopic muaj pes tsawg leeg ntawm crystalline quartz muaju, vim hais tias cov silicon cib nyob rau hauv high kub kom tshwm sim crystallization transformation, ntim expansion, tshwj xeeb tshaj yog nyob rau hauv 180 ~ 270 degree C thiab 573 degree C los yog li ntawd, crystallization. transformation yog khaus ntau, yog li nyob rau hauv lub kiln thiab txias kho txheej txheem hloov mus rau silicon cib crystallization transformation thiab siv cov kev ntsuas tsim nyog xws li nro strip.
Lub ntsiab muaj pes tsawg leeg ntawm av nplaum cib rau iav kiln yog Al2O3 thiab SiO2, Al2O3 cov ntsiab lus yog nruab nrab ntawm 30% thiab 45%, SiO3 yog nyob nruab nrab ntawm 51% thiab 66%, qhov ceev yog 1.7 ~ 2.4g / cm3, pom porosity yog 12. % ~ 21%, thiab qhov siab tshaj plaws siv kub yog 1350 ~ 1500 degree. Hauv kev lag luam iav, av nplaum cib yog siv los tso rau hauv qab ntawm kilns. Cov phab ntsa ntawm lub pas dej ua ke ntawm qhov chaw ua haujlwm thiab kev nkag mus, phab ntsa ntawm lub regenerator, arch, qis checker thiab flue. Av nplaum cib nthuav dav hauv ntim thaum lawv nce hauv qhov kub thiab txias. Thaum qhov kub siab tshaj 1450 degree, lub ntim yuav thim rov qab.
Lub ntsiab tseem ceeb ntawm mullite cib yogAl2O3, thiab nws cov ntsiab lus yog hais txog 75%, vim hais tias nws yog feem ntau mullite siv lead ua, yog li nws yog hu ua mullite cib. Qhov ceev yog 2. Sintered mullite feem ntau yog siv los tso cov phab ntsa regenerator.
JIYGO REFRACTORY & ABRASIVE LIMITED