Kev ua tshuaj lom neeg yog qhov nyuaj dua thiab hnyav rau corrosion ntawmfused cam khwb cia zirconium corundum cib. Cov laj thawj rau kev xeb loj ntawm fused zirconium corundum cib hauv iav hluav taws xob melting rauv tuaj yeem muab faib ua plaub yam:
1. nag lossis daus ntawm iav theem
The fused zirconium corundum bricks on the pool wall are subjected to the action of high-temperature glass liquid for a long time (>1500 degree). Ntawm ib sab, lub iav theem hauv lub cib yuav maj mam yaj thiab nag lossis daus (qhov qis tshaj nag lossis daus kub yog li 1150 degree); Ntawm qhov tod tes, cov kua iav alkaline uas muaj Na2O yuav cuam tshuam cov cib raws lub qhov hws thiab cov kab nrib pleb ntawm lub cev cib, diffuse thiab nkag mus rau ib leeg nrog cov iav precipitated, yog li txo cov viscosity ntawm cov kua iav precipitated thiab nce nws cov fluidity, li no intensifying tus cwj pwm corrosion thiab extending nyob rau hauv qhov tob.
2. Kev puas tsuaj rau lub cev pob txha
Raws li kev xeb ntawm cov iav kua ua kom muaj zog hauv qhov tob, cov pob txha pob txha pob txha uas tsim fused cam khwb cia zirconium corundum bricks lub cev tau maj mam nkag mus thiab ncig los ntawm cov iav kua uas muaj Na2O, thiab pob txha pob txha pib corroded. Ua ntej, cov yaj mullite decomposes rau hauv -Al2O3 thiab SiO2, uas nyob rau hauv lem txhawb kev hloov dua siab tshiab ntawm -Al2O3 rau hauv -Al2O3. Raws li qhov kub thiab txias, -Al2O3 yog yaj tag rau hauv cov kua iav, thiab cov baddeleyite thiab corundum lattices kuj raug rhuav tshem, thiab tom qab ntawd tawg, tawg, thiab ib nrab yaj. -Al2O3 maj mam yaj hauv iav ntawm qhov kub thiab txias, thiab khaws cia tsawg heev. Raws li cov iav txuas ntxiv mus rau qhov sib txawv thiab nkag mus, cov baddeleyite microcrystals ua dawb, ib feem ntawm cov kua iav thiab tej zaum yuav dhau los ua iav pob zeb, thiab ib feem ntawm cov khoom khaws cia. Txawm hais tias baddeleyite tuaj yeem yaj hauv iav, nws cov solubility tsawg heev. Raws li qhov kub thiab txias hloov pauv, ZrO2 sai sai crystallizes los ntawm cov kua iav los tsim cov pob txha zoo li lossis cov pob zeb baddeleyite.
3. Crystallization ntawm cov zaub mov tshiab
Vim hais tias cov pob txha pob txha ntawm lub cib lub cev yog ib feem ntawm cov kua iav, qhov sib xyaw ntawm cov kua iav qub tau hloov pauv. Yog li ntawd, thaum tus piv ntawm SiO2-Al2O3-Na2O nyob rau hauv lub khob kua yog ze rau lub theoretical muaj pes tsawg leeg ntawm nepheline, ib tug loj npaum li cas ntawm nepheline crystals yuav precipitate.
4. Nepheline puas tsuaj
Txij li qhov ceev ntawm nepheline tsawg dua li ntawm lub cev cib, nag lossis daus ntawm nepheline crystals yog nrog los ntawm kev nthuav dav loj, ua rau fused cam khwb cia zirconium corundum bricks lub cev xoob. Txawm hais tias lub melting ntawm ib feem ntawm lub crystalline theem nyob rau hauv lub cib nyob rau hauv lub sij hawm no yuav ua rau kom lub viscosity ntawm cov iav kua thiab muaj ib tug tej yam kev sib raug zoo thiab kev tiv thaiv nyhuv ntawm lub xoob qauv, nws tseem tsis tau kiag li thaiv cov airflow, cov khoom thiab iav kua scouring thiab. Lub ntiajteb txawj nqus nyob rau hauv lub kiln, thiab cov kab nrib pleb thiab tev mus rau hauv cov kua iav los tsim cov iav pob zeb. Lub qhov txhab ntawm lub qhov txhab tom qab tev tawm tseem yuav eroded thiab nplawm los ntawm iav kua thiab txuas ntxiv tev. Qhov tshwm sim yuav inevitably ua rau erosion thiab disintegration ntawm fused zirconium corundum cib.
