Cov teebmeem ntawm antioxidants ntawm oxidation kuj ntawmMagnesia carbon refractory cibfeem ntau yog reflected nyob rau hauv cov nram qab no yam:
1. Ua kom qeeb ntawm oxidation ntawm carbon
Thaum siv magnesium carbon bricks, oxidation ntawm carbon yog ib qho teeb meem loj. Qhov sib ntxiv ntawm cov tshuaj antioxidants tuaj yeem ua rau qeeb oxidation tus nqi ntawm cov pa roj carbon monoxide, yog li txuas ntxiv kev pab cuam lub neej ntawm magnesium carbon cib. Qhov no yog vim antioxidants tuaj yeem hnov mob nrog oxygen los tsim cov oxides los yog carbides, uas tuaj yeem thaiv qhov hws thiab txo cov permeability ntawm cov khoom, yog li inhibiting los yog qeeb oxidation ntawm carbon.
2. Txhim kho qhov kub thiab txias
Antioxidants tuaj yeem tsis tsuas yog qeeb oxidation ntawm carbon, tab sis kuj txhim kho qhov kub thiab txias ntawm magnesia carbon cib. Piv txwv li, tom qab ntxiv cov tshuaj antioxidants xws li hlau Al, Si, B4C, cov ntsiab lus no yuav hnov mob nrog oxygen los tsim cov oxides los yog carbides, thiab tsim cov pob zeb hauv av tshiab ntawm qhov kub thiab txias. Cov txheej txheem ntxhia tshiab no tuaj yeem txhim kho qhov ntom ntawm cov cib, txhim kho lawv qhov kub thiab txias zog thiab tiv thaiv slag yaig.
3. Tsim cov txheej txheem tiv thaiv antioxidant
Tom qab ntxiv cov tshuaj antioxidants rau magnesia carbon bricks, cov additives no yuav hnov mob nrog oxygen ntawm qhov kub thiab txias los tsim cov txheej txheem tiv thaiv antioxidant ntom ntawm cov cib. Cov txheej tiv thaiv no tuaj yeem tiv thaiv kev nkag mus ntxiv ntawm oxygen, yog li tiv thaiv cov pa roj carbon hauv lub cib los ntawm oxidation. Piv txwv li, magnesia carbon refractory cib nrog B4C ntxiv yuav tsim cov theem qis melting xws li magnesium borate ntawm qhov kub thiab txias. Cov theem qis melting point no tsim cov kua txheej rau ntawm qhov chaw, ntxiv dag zog rau cov nyhuv ntawm cov txheej txheem tiv thaiv antioxidant.
4. Txhim kho corrosion kuj
Qhov sib ntxiv ntawm cov tshuaj antioxidants kuj tuaj yeem txhim kho corrosion kuj ntawm magnesia carbon cib. Qhov no yog vim cov tshuaj antioxidants tuaj yeem txhim kho microstructure ntawm lub cib lub cev, ua kom nws ntom thiab sib xws. Qhov no tuab thiab cov teeb tsa microstructure tuaj yeem txo qhov kev nkag thiab kev yaig ntawm lub cev pob txha thiab ua kom zoo dua ntawm lub cev corrosion.
5. Lub luag haujlwm ntawm cov tshuaj antioxidants tshwj xeeb
Hlau Al: Hlau Al hmoov muaj cov thermal conductivity zoo thiab qis melting point (659 degree). Nws reacts nyob rau hauv cib los tsim cov tebchaw xws li Al4C3, AlN, thiab Al2O3. Cov tebchaw no tuaj yeem tsim cov txheej tiv thaiv ntom ntom ntawm qhov kub thiab txias, inhibit carbon oxidation, thiab txhim khu kev ua haujlwm kub ntawm cib.
Hlau Si: Si muaj tus qauv qis tsim tsis muaj zog, muaj zog affinity nrog oxygen, thiab yooj yim rau kev sib xyaw nrog oxygen los tsim cov oxide SiO2 sib xws, yog li inhibiting carbon oxidation.
B4C: B4C tuaj yeem tsim cov theem qis-melting-point xws li magnesium borate ntawm qhov kub thiab txias. Cov theem no tsim cov txheej txheem ua kua rau ntawm qhov chaw, tiv thaiv cov pa oxygen nkag mus thiab txhim kho oxidation tsis kam.
Lwm yam additives: xws li Al-Mg, SiC, CaB6, thiab lwm yam kuj yog feem ntau siv los ua antioxidants rau magnesia carbon cib. Lawv txhim kho oxidation tsis kam thiab ua haujlwm kub ntawm cov cib los ntawm cov txheej txheem sib txawv.
VI. Piv txwv daim ntawv thov
Hauv kev siv tiag tiag, ntau lub tuam txhab ntxiv qhov tsim nyog ntawm cov tshuaj tua kab mob txhawm rau txhim kho oxidation tsis kam ntawm magnesia carbon bricks thaum tsim lawv. Piv txwv li, magnesia carbon bricks dav siv nyob rau hauv high-temperature metallurgical khoom xws li converters, hluav taws xob arc rauv thiab ladles feem ntau ntxiv antioxidants xws li Al, Si, thiab B4C. Qhov sib ntxiv ntawm cov additives no ho txhim kho lub neej kev pab cuam thiab kev ruaj ntseg ntawm magnesia carbon bricks.
Hauv cov ntsiab lus, cov tshuaj tiv thaiv antioxidants muaj txiaj ntsig zoo rau oxidation tsis kam ntawm magnesia carbon refractory cib. Los ntawm kev xaiv cov tshuaj antioxidants tsim nyog thiab tswj lawv cov nyiaj ntxiv, kev ua haujlwm kub, kev tiv thaiv corrosion thiab kev pabcuam lub neej ntawm magnesia carbon cib tuaj yeem txhim kho tau zoo.
