Noj ntab iav ua piv txwv, peb qhov khoom siv thermal loj hauv cov iav ntau lawm suav nrog ntab iav melting rauv, ntab iav tin da dej thiab iav annealing rauv. Nyob rau hauv tus txheej txheem ntawm iav ntau lawm, lub iav melting rauv yog lub luag hauj lwm rau melting cov ntaub ntawv batch rau hauv iav kua thiab clarifying, homogenizing thiab txias rau qhov kub thiab txias yuav tsum tau rau molding. Lub tin da dej yog cov khoom siv tseem ceeb rau iav molding. Cov kua iav nrog qhov kub ntawm 1050 ~ 1100 ℃ ntws los ntawm cov dej ntws mus rau hauv cov kua dej hauv cov tin da dej. Cov iav kua yog flattened thiab polished rau saum npoo ntawm lub tin da dej, thiab yog tswj los ntawm mechanical rub, sab guards thiab sab kos duab tshuab los tsim ib lub iav ribbon ntawm qhov yuav tsum tau muaj dav thiab thickness. Thiab nws tawm hauv lub tin da dej thaum nws maj mam txias rau 600 ℃ thaum lub sij hawm ua ntej. Lub luag haujlwm ntawm lub qhov cub annealing yog txhawm rau tshem tawm cov kev ntxhov siab seem thiab kho qhov muag inhomogeneity ntawm ntab iav, thiab txhawm rau txhim kho cov qauv sab hauv ntawm iav. Lub iav txuas txuas ntxiv nrog qhov kub ntawm txog 600 ℃ los ntawm cov tin da dej nkag mus rau hauv lub qhov cub tawg los ntawm kev hloov cov menyuam lub rooj. Tag nrho peb cov khoom siv thermal loj no xav tau cov khoom siv refractory. Txhawm rau kom muaj kev ua haujlwm zoo thiab ruaj khov ntawm cov iav melting rauv, nws yog qhov tseeb inseparable los ntawm kev txhawb nqa ntawm ntau yam khoom siv refractory. Cov hauv qab no yog 9 hom khoom siv refractory feem ntau siv hauv cov iav melting rauv thiab lawv cov yam ntxwv:
Silica bricks rau iav kiln:
Cov khoom xyaw tseem ceeb: silicon dioxide (SiO2), cov ntsiab lus yuav tsum siab tshaj 94%. Ua haujlwm kub: qhov siab tshaj plaws ua haujlwm kub yog 1600 ~ 1650 ℃. Nta: zoo tiv thaiv rau acidic slag yaig, tab sis tsis zoo tiv thaiv alkaline ya cov khoom yaig. Feem ntau yog siv rau masonry ntawm loj arches, lub mis phab ntsa thiab me me rauv.
Fire Clay bricks rau iav kiln:
Cov khoom xyaw tseem ceeb: Al2O3 thiab SiO2, Al2O3 cov ntsiab lus nyob nruab nrab ntawm 30% ~ 45%, SiO2 yog nruab nrab ntawm 51% ~ 66%. Kev khiav hauj lwm kub: qhov siab tshaj plaws kev khiav hauj lwm kub yog 1350 ~ 1500 ℃. Nta: Nws yog cov khoom siv tsis muaj zog acidic refractory nrog zoo refractoriness, thermal stability thiab thermal conductivity tsawg. Feem ntau yog siv rau masonry ntawm lub hauv qab ntawm lub pas dej ua ke, lub pas dej ua ke phab ntsa ntawm qhov chaw ua hauj lwm thiab txoj kev, phab ntsa, koov, qis checker bricks thiab flue ntawm lub tshav kub cia chav tsev.
High alumina cib rau iav kiln:
Cov khoom tseem ceeb: SiO2 thiab Al2O3, tab sis Al2O3 cov ntsiab lus yuav tsum siab dua 46%. Ua haujlwm kub: Qhov siab tshaj plaws ua haujlwm kub yog 1500 ~ 1650 ℃. Nta: Zoo corrosion kuj, thiab tuaj yeem tiv thaiv corrosion los ntawm ob qho tib si acidic thiab alkaline slags. Feem ntau siv nyob rau hauv cov cua kub cia chambers, nrog rau refractory accessories rau ua hauj lwm pas dej ua ke, cov khoom raws thiab feeders.
Mullite bricks:
Lub ntsiab tseem ceeb ntawm mullite cib yog Al2O3, thiab nws cov ntsiab lus yog li ntawm 75%. Vim nws feem ntau yog mullite crystals, nws yog hu ua mullite cib. Qhov ceev 2.7-3 2g / cm3, qhib porosity 1% -12%, thiab qhov siab tshaj plaws ua haujlwm kub yog 1500 ~ 1700 ℃. Sintered mullite yog tsuas yog siv rau masonry ntawm tshav kub cia chamber phab ntsa. Fused mullite feem ntau yog siv rau masonry ntawm phab ntsa pas dej ua ke, soj ntsuam qhov, phab ntsa buttresses, thiab lwm yam.
Fused zirconium corundum cib:
Fused zirconium corundum bricks kuj hu ua dawb hlau cib. Feem ntau, fused zirconium corundum cib muab faib ua peb qib raws li cov ntsiab lus zirconium: 33%, 36%, thiab 41%. Lub zirconium corundum cib siv hauv kev lag luam iav muaj 50% ~ 70% Al2O3 thiab 20% ~ 40% ZrO2. Qhov ceev yog 3.4 ~ 4.0g / cm3, qhov pom tseeb porosity yog 1% ~ 10%, thiab qhov siab tshaj plaws ua haujlwm kub yog li 1700 ℃. Fused zirconium corundum cib nrog zirconium ntsiab lus ntawm 33% thiab 36% yog siv los tsim kiln pas dej ua ke phab ntsa, nplaim qhov chaw ntawm lub mis phab ntsa, me me cub tawg qhov, me me cub tawg arches, me me cub tawg pawg, tus nplaig arches, thiab lwm yam. Fused zirconium corundum cib yog cov ntsiab lus ntawm 4% ndlwg ntawm zircon. qhov, thiab lwm qhov chaw uas cov iav kua erodes thiab corrodes cov ntaub ntawv refractory feem ntau ua phem. Cov khoom siv no yog cov khoom siv dav siv fused cam khwb cia refractory hauv kev lag luam iav.
Fused alumina cib:
Nws feem ntau yog hais txog fused α, β corundum, thiab fused β corundum refractory cib, uas yog tsim los ntawm 92% ~ 94% Al2O3 corundum siv lead ua theem, ntom 2.9 ~ 3.05g / cm3, pom porosity 1% ~ 10%, thiab siab tshaj plaws kev khiav hauj lwm kub ntawm 10%. Fused alumina muaj kev tiv thaiv zoo rau iav permeation thiab yuav luag tsis muaj kuab paug rau iav kua. Nws yog dav siv nyob rau hauv kev ua hauj lwm ntawm lub pas dej ua ke phab ntsa, pas dej ua ke hauv qab, ntws channel, ua hauj lwm cov khoom siv channel pas dej ua ke phab ntsa, cov khoom channel pas dej ua ke hauv qab thiab lwm qhov chaw ntawm lub iav melting rauv uas hu rau lub iav kua thiab yuav tsum tsis txhob muaj refractory kab mob.
Quartz cib:
Lub ntsiab tivthaiv yog SiO2, uas muaj ntau tshaj 99%, nrog rau qhov ceev ntawm 1.9 ~ 2g / cm3, refractoriness ntawm 1650 ℃, ua hauj lwm kub txog 1600 ℃, thiab acid yaig kuj. Nws yog siv los tsim cov phab ntsa pas dej ua ke ntawm acidic boron iav, nplaim qhov chaw thermocouple qhov cib, thiab lwm yam.
Alkaline refractory khoom:
Alkaline refractory cov ntaub ntawv tsuas yog xa mus rau magnesia cib, alumina-magnesia cib, magnesia-chrome cib, thiab forsterite cib. Nws qhov kev ua tau zoo yog los tiv thaiv kev yaig ntawm cov ntaub ntawv alkaline, thiab nws cov refractoriness yog 1900 ~ 2000 ℃. Nws yog dav siv nyob rau hauv lub sab sauv phab ntsa ntawm lub regenerator ntawm lub iav melting rauv, lub regenerator arch, daim phiaj lub cev, thiab lub cub tawg me me qauv.
Insulation bricks rau iav furnaces:
Lub tshav kub dissipation cheeb tsam ntawm lub iav melting rauv yog loj thiab thermal efficiency yog tsawg. Yuav kom txuag tau lub zog thiab txo kev siv, ntau cov ntaub ntawv rwb thaiv tsev yog xav tau rau kev rwb thaiv tsev zoo. Tshwj xeeb, cov phab ntsa hauv pas dej, pas dej hauv qab, koov, thiab phab ntsa hauv lub tshuab hluav taws xob, qhov melting, ua haujlwm, thiab lwm yam yuav tsum tau insulated kom txo tau cov cua sov dissipation. Qhov porosity ntawm rwb thaiv tsev cib yog qhov loj heev, qhov hnyav yog lub teeb heev, thiab qhov ceev tsis tshaj 1.3g / cm3. Txij li thaum tshav kub hloov kev ua tau zoo ntawm huab cua tsis zoo heev, lub rwb thaiv tsev cib nrog ib tug loj porosity muaj ib tug insulating nyhuv. Nws cov thermal conductivity coefficient yog 2 ~ 3 npaug qis dua li ntawm cov khoom siv refractory, yog li qhov loj dua qhov porosity, qhov zoo dua cov nyhuv rwb thaiv tsev. Muaj ntau ntau hom rwb thaiv tsev cib, xws li av nplaum rwb thaiv tsev cib, silica rwb thaiv tsev cib, siab alumina rwb thaiv tsev cib thiab lwm yam.
Lub sij hawm xa tuaj: Plaub Hlis-25-2025
