Hauv kev lag luam steelmaking,Cov Oxygen Furnaces(Bof) yog qhov tseem ceeb rau kev tsim cov siab -} zoo steel. Txawm li cas los xij, qhov kev ua haujlwm hnyav tsis pub dhau BOFS, suav nrog slags thiab corrosive slags, tuaj yeem ua rau tsiaj tseem ceeb thiab kua muag ntawm refractory linings. Nkag siab txog qhov ua rau xeb hauv bof refactories yog qhov tseem ceeb rau kev txhim kho lawv lub zog thiab kev ua tau zoo.
1. Tshuaj lom neeg cov tshuaj lom neeg thiab muaj kev sib tham
Ib qho ua rau muaj kev ua haujlwm tseem ceeb hauv kev txhim kho hauv bof refactor yog cov tshuaj lom neeg cov tshuaj tiv thaiv thiab kev sib cais ntawm cov tshuaj khib nyiab (Mgo) hauv cov refractory ob sab. Qhov kev sib cuam tshuam ntawm Mgo thiab Slag ua rau kev tsim ntawm qis {{1} {2} Yuav kom nkag mus rau cov khoom siv refractory, uas tuaj yeem nkag rau cov khoom siv refractory thiab ua rau muaj kev cuam tshuam. Tus txheej txheem no tau tawm los ntawm muaj hlau (FE) thiab lwm cov khoom hauv cov nplais, uas tuaj yeem tsim cov ntawv sib txuas ua ke nrog MGO, txuas ntxiv ua rau cov qauv refractory.
2. Slag nkag
SLAG Penetration yog lwm qhov tseem ceeb ua rau muaj kev xeb ntawm bof Readactories. Slag tuaj yeem infiltrate lub qhov hws thiab cov ciaj ciam ntawm cov khoom siv refractory, coj mus rau cov neeg kho tshuab kev ua tsis raws cai thiab tsim ntawm Decarburized txheej. Qhov txheej txheem decarburized no tau raug ntau dua kev txhim kho corrosion thiab tuaj yeem ua rau muaj kev tsim cov kab nrib pleb thiab spalling. Lub qhov tob ntawm kev nkag mus rau ntawm ntau yam, suav nrog qhov ntsuas kub thiab cov tshuaj lom neeg ntawm slag.
3. Thermal poob siab thiab kev ntxhov siab txhua yam
Kev hloov kub ceev thiab kev ntxhov siab cov neeg siv tshuab los ntawm cov xyoob ntoo refactories thaum cov txheej txheem statmaking kuj tseem tuaj yeem ua rau corrosion. Thermal poob siab ua rau cov khoom siv refactory los nthuav dav thiab cog lus, ua rau kev tsim cov microcacks. Cov microcacks no tuaj yeem ua txoj hauv kev rau kev nkag mus rau slag thiab corrosion ntxiv. Ib qho ntxiv, kev cuam tshuam txhua yam los ntawm Molten hlau thiab swb tuaj yeem ua rau lub cev coj lub cev thiab kua muag ntawm ob lub refractory.
] 4. Oxidation ntawm Carbon
Nyob rau hauv Mgo - c recractories, oxidation ntawm carbon yog ib qho tseem ceeb pab coj. Oxidation nce qhov porosity ntawm cov khoom siv refractory, txo nws lub zog thiab kev tiv thaiv kom muaj cov neeg sawv cev oxidizing ntxiv. Cov txheej txheem no yog qhia tshwj xeeb ntawm qhov kub siab tshaj 1400 degree, qhov twg indirec oxidation ua tus txheej txheem tseem ceeb ua tus txheej txheem tseem ceeb ua tus txheej txheem tseem ceeb.
5. Peb -} theem sib cuam tshuam
Qhov kev sib cuam tshuam ntawm cov khoom siv refractory, slag, thiab molten hlau tuaj yeem ua rau hauv zos corrosion. Qhov tsim ntawm Coo bubbles ntawm lub interface ntawm cov theem no tuaj yeem ua rau muaj lossis txhim kho txoj kev xeb kev, nyob ntawm lawv qhov chaw nyob. Tsis tas li ntawd, kev txav ntawm cov yeeb yaj kiab slag thiab tsim ntawm qhov qis - me}} kev sib xyaw ua ke tuaj yeem ua kom nrawm dua cov xeb corrosion.
Cov ua rau muaj kev xeb hauv bof refactories suav nrog Mggal poob siab, kev nkag siab ntawm Carbon, thiab peb {{}} theem sib cuam tshuam. Hais txog cov teeb meem no yuav tsum muaj cov khoom siv sib xyaw ua ke ntawm cov quav tshuaj lom zem, thiab siv cov cua sov siab dua thiab kev xyaum ua haujlwm. Los ntawm kev nkag siab thiab mitigating no ua rau muaj kev xeb, cov khoom lag luam hlau tuaj yeem txhim kho lawv cov bef refractory linings, ua kom tau txais txiaj ntsig kev ua haujlwm thiab txhim kho kev ua haujlwm zoo.
