Thaum Lub Rau Hli.2022, Kev Muag Khoom Kub Kub, 138 tons Hluav taws kub av nplaum tau ntim rau xa mus rau cov neeg siv khoom hauv Philippines. Feem ntau yog siv rau lub tsev smelting furnaces, nws muaj peev xwm tiv taus kub ntawm 1,580 degree -1,770 degree . Kuj hu ua hluav taws cib. Cov khoom siv refractory ntawm qee yam duab thiab qhov loj me.Kev hnav tsis kam yog qhov tseem ceeb hauv kev yaig hnav ntawm refractory cib rau cov khoom siv hauv tsev. Tab sis hom hluav taws kub refractory av nplaum cib yog qhov hnav-resistant tshaj plaws? Cib nrog zoo hnav tsis kam tsis yog qhov siab dua lub zog, ntau hnav-tiv taus, tab sis hnav-tiv taus tus nqi ntawm qhov zoo ntawm cov cib refractory. Silicon carbide refractory cib muaj qhov muaj zog hnav tsis kam, siab alumina refractory cib thiab corundum refractory cib muaj nruab nrab hnav tsis kam, thiab alkaline, siliceous thiab av nplaum cib muaj kev hnav tsis zoo. Vim muaj qhov sib txawv loj hauv cov ntsiab lus alumina, siab alumina cib muaj cov nqi sib txawv. Raws li kev siv, aluminium-silicon-carbide-carbon bricks uas muaj graphite hnav ntau dua, thiab aluminium-carbon bricks nrog cov ntsiab lus graphite tsawg lossis tsis muaj graphite muaj tsawg dua hnav. Silicon carbide thiab corundum muaj cov ntxhia hardness. Raws li txoj cai, qhov siab dua qhov hardness, qhov muaj zog hnav tsis kam. Qhov qis dua lub zog Mohs, qhov qis dua qhov ua kom tsis haum. Cov txheej Mohs hardness ntawm graphite yog tsawg vim yog intermolecular quab yuam, yog li cov hnav tsis kam yog tsis zoo. Piv txwv li, magnesia bricks, magnesia spinel cib, magnesia chrome cib, av nplaum cib, thiab silica cib muaj tsawg Mohs degrees thiab qis hnav tsis kam. Tseem muaj qee cov cib sib xyaw, cov av nplaum sib xyaw ua ke silicon carbide cib, silicon nitride bonded silicon carbide cib, corundum silicon carbide cib, piv txwv li, silicon nitride bonded silicon carbide cib yog hnav-resistant dua li corundum silicon carbide cib, thiab corundum silicon carbide cib. Hnav-resistant dua av nplaum-bonded silicon carbide cib. Cov qauv siv lead ua hom thiab lattice zog ntawm cov txheej txheem ntxhia sib txawv ua rau sib txawv hardness ntawm lawv cov minerals. Mohs hardness ntawm pob zeb diamond, silicon carbide, thiab corundum ntawm atomic siv lead ua yog siab heev, thiab spinel, mullite, thiab periclase ntawm ionic siv lead ua. Lub hardness ntawm lub pob zeb txo nyob rau hauv lem, thiab siab dua lub hardness ntawm cov ntxhia, qhov muaj zog hnav tsis kam.
