Lub melting point yog dab tsi refractory cib?

Refractory bricks yog cov khoom siv hluav taws kub-resistant, uas feem ntau yog siv rau hauv kev ua haujlwm kub kub xws li chimneys thiab kilns. Txawm li cas los xij, refractory bricks kuj muaj cov ntsiab lus melting. Cov khoom siv ntawm refractory bricks yog txawv. Xaiv hom refractory bricks raws li koj tus kheej kev siv.

Lub refractory ua los ntawm cov av nplaum hluav taws-resistant los yog lwm yam khoom siv refractory. Feem ntau yog siv rau lub tsev smelting rauv, tuaj yeem tiv taus kub ntawm 1,580 ℃ -1,770 ℃;

av nplaum cib yog cov khoom siv tsis muaj zog acidic refractory. Thaum lub refractoriness ntawm av nplaum cib siv nyob rau hauv industrial furnaces yog siab tshaj 1600 ° C, qhov pib kub ntawm load softening tsuas yog 1250-1300 ° C. Cov av nplaum siv los ntawm Yiran industrial furnaces yog nplua nuj nyob rau hauv raw cov ntaub ntawv, kev tsim technology kuj yooj yim, thiab tus nqi kuj tsawg. Lawv tau dav siv nyob rau hauv kev tsim kho ntawm ntau yam Yiran cua sov rauv thiab cov flues, chimneys, thiab chimneys ntawm Yiran tshav kub kho furnaces. Rauv lub cev, cov khoom siv hluav taws xob pov tseg thiab combustion system burners, thiab lwm yam.

Magnesia cib yog cov khoom siv refractory nrog MgO cov ntsiab lus siab dua 80-85% thiab periclase ua cov pob zeb hauv av thawj. Lub melting point ntawm MgO yog siab li 2800 ℃. Lub refractoriness ntawm magnesia cib yog siab tshaj 2000 ℃, tab sis nws softening point nyob rau hauv load yog tsawg heev, ntev li 1500-1550 ℃. Qhov no yog vim hais tias ib puag ncig periclase muaju yog sib koom ua ke los ntawm cov khoom siv qis qis (CaO·MgO·SiO2) thiab iav, thaum periclase tsis tsim ib qho kev sib txuas ua ke txuas ntxiv, qhov ntsuas kub ntawm qhov deformation tsawg heev, thiab qhov pib kub ntawm qhov muag muag. mus rau 40% deformation yog me me, ntev li 30-50 ℃. Lub thermal stability ntawm magnesia bricks kuj tsis zoo, thiab nws tsuas yog tawg thaum lub sij hawm ceev ceev txias thiab cua sov, uas yog ib qho tseem ceeb rau kev puas tsuaj ntawm magnesia bricks.

General corundum bricks yog tsim rau hauv ob sab phlu ntawm cov hluav taws kub ntawm cov roj gasification rauv hnyav nrog kev ua haujlwm siab ntawm 3MPa lossis tsawg dua, ib feem tseem ceeb ntawm cov hauv ob sab phlu ntawm cov dej qab ntsev incinerators, thiab radiant burner cib uas ua hauj lwm ntawm qhov kub thiab txias. Feem ntau, kev siv kub ntawm corundum bricks yog qis dua 1600-1670 degrees Celsius. Lub teeb yuag refractory av nplaum cib yog siv los ua kiln linings uas tsis corroded los ntawm high-temperature slag thiab corrosive gases. Nyob ntawm qhov muaj peev xwm, kev khiav hauj lwm kub ntawm 1150-1400 degrees Celsius

Cov saum toj no yog cov ntsiab lus ntawm qhov sib txawv melting ntsiab lus ntawm refractory bricks raws li ntau hom. Thaum xaiv cov cib refractory, koj tuaj yeem xaiv qhov zoo raws li qhov chaw melting.