Lub qhov hluav taws xob txo qhov hluav taws xob yog cov duab plaub thiab feem ntau suav nrog lub hauv paus cub tawg, lub plhaub ntawm lub cub tawg, lub qhov cub hauv qab, lub qhov cub lub cev, thiab lub qhov cub sab saum toj. Lub tshuab hluav taws xob lub cev muaj thaj tsam phom phom thiab thaj chaw molten pas dej ua ke. Sab nraud yog tsim los ntawm lub tsho dej thiab lub plhaub hlau, thiab sab hauv yog tsim los ntawm cov khoom siv refractory. Txij li thaumrefractory brickscov ntaub ntawv yog nyob rau hauv kev sib cuag nrog high-temperature molten slag, lead kua, thiab burning nplaim taws, lub neej kev pab cuam ntawm cov ntaub ntawv refractory ncaj qha cuam tshuam rau lub neej ntawm qhov txo qhov cub.
Cov ntaub ntawv refractory nyob rau hauv lub qhov hluav taws xob txo qhov cub yog magnesia-chrome cib. Magnesia-chrome cib yog cov khoom siv refractory nrog magnesium oxide (MgO) thiab chromium trioxide (CrO₂) ua cov khoom tseem ceeb, thiab periclase thiab spinel ua cov ntsiab lus ntxhia. Lawv muaj siab refractoriness, siab kub lub zog, muaj zog tiv thaiv alkaline slag yaig, zoo thermal stability, thiab tej yam adaptability rau acidic slag.
Lub cev thiab tshuaj ntsuas ntawm cov khoom siv refractory bricks feem ntau yog:
(1) Refractoriness: cov cuab yeej ntawm tsis softening los yog melting ntawm ib tug txaus kub kub, yam ntxwv ntawm lub refractoriness.
(2) Load softening kub: Muaj peev xwm tiv taus cov loads loj thiab lwm yam thermal mechanical stresses ntawm qhov kub thiab txias yam tsis tau poob lub zog los yog deformation thiab vau. Tus yam ntxwv Performance index yog load softening kub.
(3) Kev kub siab ntim ruaj khov: Thaum siv, tsis muaj qhov ntim ntau dhau los yog kev cog lus, kom tsis txhob cuam tshuam cov qauv kev ruaj ntseg lossis nruj ntawm cov khoom siv kub. Cov yam ntxwv Performance index yog qhov hloov ntawm cov kab rov ua dua.
(4) Thermal shock stability: Lub peev xwm los tiv thaiv qhov kub thiab txias hloov tsis tau tawg lossis tev. Cov yam ntxwv Performance index yog thermal expansion coefficient thiab thermal shock resistance index.
(5) Slag tsis kam: Lub peev xwm los tiv thaiv cov tshuaj lom neeg ntawm ntau yam corrosive yam tsis tau corroded thaum siv.
(6) Kev hnav tsis kam: Lub peev xwm los tiv thaiv kev yaig ncaj qha lossis puas los ntawm cov nplaim hluav taws kub ceev, cov pa roj uas muaj cov khoom siv, cov kua hlau thiab cov slag, cov khoom siv thiab lwm yam khoom.
Lub cev thiab tshuaj ntsuas ntawm magnesia-chrome refractory bricks rau sab-blown txo qhov cub refractory cov ntaub ntawv yog load softening pib kub siab tshaj los yog sib npaug rau 1700 degree, thermal shock stability 1100 degree, dej txias ntau dua los yog sib npaug rau 7 zaug, thiab ntim Qhov ceev 3.44g / cm3.
