Cov Cib Refractory Twg ​​Siv Rau Hauv Cov Cub Hluav Taws Kub? Ib Phau Ntawv Qhia Tag Nrho

Cov cib Fireclay yog cov cib refractory yooj yim siv dav tshaj plaws hauv cov cub tawg. Ua los ntawm kaolin nrog txog li30% Al₂O₃, lawv muaj qhov zoo heev thermal shock tsis kam thiab tus nqi qis, ua rau lawv zoo tagnrho rau thaj chaw kub nruab nrab(1200–1400 ℃)xws li phab ntsa cua sov, cov qhov cua, thiab cov saum cua sov uas kub qis. Lawv qhov kev ruaj khov zoo tiv thaiv kev tawg los ntawm kev hloov pauv kub sai, thaum lawv tus nqi pheej yig pab tswj cov nqi tag nrho ntawm cov haujlwm, ua rau lawv yog qhov kev xaiv pheej yig rau cov cua sov kev lag luam dav dav.

Cov cib uas muaj alumina siab yog cov hloov kho dua tshiab rau cov cib fireclay, uas muaj ntau dua48% Al₂O₃. Nrog rau qhov refractoriness siab dua(1400–1600 ℃), lub zog compressive zoo dua, thiab muaj zog tiv taus kev yaig, lawv tsim nyog rau cov khoom siv cua sov siab xws li cov ntaub hauv lub cub tawg, cov saum lub cub tawg, thiab cov qhov rooj cub tawg. Faib los ntawm cov ntsiab lus Al₂O₃, lawv ua tau raws li qhov xav tau kub sib txawv, ua rau lawv siv dav hauv cov cub tawg metallurgical thiab tshuaj lom neeg qhov twg xav tau kev ruaj khov kub siab.

Cov cib silica, nrogCov ntsiab lus SiO₂ siab tshaj 94%, ua tau zoo hauv kev ruaj khov ntawm qhov kub thiab txias, nrog rau qhov kub thiab txias ntawm qhov hnyav tshaj1650 ℃Lawv feem ntau yog siv rau hauv cov khoom kub heev xws li lub qhov cub thiab cov khoom siv rov ua dua tshiab, tshwj xeeb tshaj yog nyob rau hauv cov cua sov oxidizing. Txawm li cas los xij, lawv qhov kev tiv thaiv thermal tsis zoo txwv lawv txoj kev siv hauv thaj chaw uas muaj kev hloov pauv kub ntau zaus.

Cov cib alkaline refractory, suav nrog cov cib magnesia thiab cov cib magnesia-alumina, yog tsim los rau cov chaw ib puag ncig hnyav. Cov cib Magnesia, feem ntau yog ua los ntawmMgO, tuaj yeem tiv taus qhov kub thiab txias txog li2000 ℃thiab muaj zog tiv taus alkaline slag, ua rau lawv haum rau hauv qab cub tawg thiab cov kab slag uas sib cuag nrog alkaline melts. Magnesia-alumina cib txhim kho kev tiv taus thermal shock los ntawm kev ntxiv alumina, hloov kho rau cov xwm txheej ua haujlwm nyuaj dua.

Cov cib refractory tshwj xeeb zoo li cov cib corundum(Al₂O₃ ≥90%)thiab cov cib silicon carbide siv rau cov khoom tseem ceeb. Cov cib corundum tiv taus qhov kub siab tshaj1800 ℃thiab zoo tagnrho rau thaj chaw uas raug hluav taws lossis kev puas tsuaj ntawm cov slag loj heev. Cov cib silicon carbide muaj kev tiv thaiv kev hnav zoo heev thiab kev tiv thaiv kev poob siab thermal, tsim nyog rau hauv qab lub cub tawg, cov qhov cub tawg, thiab lwm yam khoom siv hnav siab.