Muaj ntau yam cuam tshuam uas cuam tshuam rau lub rheology ntawmRefractorters Castables, xws li qhov kev txwv loj, cov duab, faib khoom, thiab nqus dej ntawm cov lus; Cov cuab yeej thiab ntxiv tus nqi ntawm kev sib txuas thiab dispersants, cov dej ntxiv, thiab cov txheej txheem cuam tshuam. Tab sis qhov tseem ceeb tshaj plaws yog cov kab ke khi, particle loj xa tawm, thiab cov khoom thiab ntxiv cov nqi ntawm dispersants.
1. Tus yam ntxwv ntawm particle loj faib
Raws li peb txhua tus paub, muaj ntau ntau yam uas cuam tshuam rau kev coj tsis ncaj ntawm Refractory Castables, tab sis yog ib qho tseem ceeb tshaj plaws lub xeev. Coob tus ntawm cov kev tshawb fawb tau pom tias txawm tias muaj kev hloov me me hauv particle loj faib coefficient (q) tus nqi ntawm cov camtable yuav muaj qhov cuam tshuam tseem ceeb ntawm kev coj tus cwj pwm.
Lub particle stacking muaj qhov cuam tshuam zoo rau ntawm rheology ntawm cov Castable. Cov khoom siv tseem ceeb siv nyob rau hauv thaj teb ntawm refractory cov ntaub ntawv yog wilter particle loj muab faib thiab Andreastsen particle loj faib. Andreassen particle loj muab faib tawm yog feem ntau siv vim tias nws tau ua haujlwm yooj yim thiab yooj yim. AndreasSen Batching nkhaus Qhov Kev Ncaj Qha, Tus Qauv Yog Cpft= (d / d) Q-· 100 (1)
Qhov twg: CPft: Cumulative (ntim khoom (ntim) feem pua ntawm cov ntsiab lus finer tshaj li particle loj d; D: Qhov loj me me; D: Qhov ntau tshaj plaws qhov loj me; Q: Kev faib tawm coefficient.
Andreassen particle loj faib tau muab xam rau ntawm cov feem pua feem pua hauv cov kab ke multicomponent thiab plotted siv lub logarithmic nkhaus. Lub particle loj faib ua kom muaj txoj kab ncaj nraim, thiab txoj kab nqes ntawm cov kab ncaj yog sawv cev los ntawm Q. Feem ntau, ib qho qis dua q txhais tau tias yog cov feem ntau dua ntawm cov hmoov zoo. Rau cov khoom siv refactory, kom tau txais qhov zoo tshaj plaws ntim ntom ntom ntom, tus nqi ntawm Q yuav tsum yog 0.2 thiab 0.3. Nrog qis Q tus nqi, yuav muaj hmoov zoo dua nyob rau hauv cov khoom faib. Cov hmoov zoo no ua raws li cov muab tub lim thiab roj nplua nyeem kom ua kom cov ntxhib los ntawm kev hu ib leeg thiab rub tawm tsam ib leeg, yog li tau txais cov khoom zoo rheological. Los ntawm kev kawm cov nyhuv ntawm particle loj faib tawm (cov txiaj ntsig zoo tshaj plaws ntawm cov khoom siv ua kom zoo tshaj plaws yog 0.2-0.25, lub Castiver yog 0.35, lub Castable tsis muaj fluidity.
2. Cov nyhuv ntawm cov cement
Tus nqi ntawm cov xis kawm muaj qhov cuam tshuam tseem ceeb ntawm tus kheej - txaus tus nqi ntawm refractory castaber. Calcium alumination xis mas yuav tsum muaj cov dej uas tsim nyog nyob rau hauv cov txheej txheem ntawm kev ua cov khoom siv quav dej. Thaum cov dej ntxiv yog tib yam, ntau cov xis nyob yuav txo cov dej dawb thiab txo tus kheej {3} khiav ntawm cov Castable. Txawm li cas los xij, cov xis kawm me me ntxiv yuav cuam tshuam lub zog ntawm cov metable ntawm chav sov. Yog li ntawd, qhov ntau ntawm cov xis mas yuav tsum raug txo kom raug txo nyob rau hauv lub premise ntawm kev ua kom muaj zog ntawm lub Castable. Nyob rau hauv ultra -} Laas Castabe, cement yog ua lub luag haujlwm ntawm kev ncua kev sib cav. Kev kawm txog rheological cov yam ntxwv ntawm corundum {{}} pev alumin alumacinate kev ncua ntawv ob leeg zoo li nce.
3. Cov nyhuv ntawm micropowder
Lub micropowder hauv Refractory CASTABLE yog yooj yim rau daim ntawv sau nrog ob txheej them ob npaug thaum nws ua tau dej. Vim yog cov dispersion ntawm electrolytes thiab surfactants, cov lus tsis ua agglomerates. Tom qab ntxiv cov dispersant, lub peev xwm zeta yog nce los ntawm ion pauv pauv, uas nce qhov kev ntxeev siab ntawm micelles. Nyob rau hauv txoj kev no, lub fluidity ntawm cov Castable tuaj yeem txhim kho hauv tib txoj kev haus dej, thaum cov dej haus yog txo kom muaj cov xim zoo li qub. Yog li ntawd, kev siv ntawm micropowder txo cov dej tau haus thiab khav theeb, yog li ntawd lub Castable tau txais cov teeb tsa ntau dua thiab tuab tus qauv.
