Tus nqi yog dab tsi refractory bricks rau metallurgical furnaces?

Tus nqi yog dab tsi refractory bricks rau metallurgical furnaces? Qhov no tej zaum yuav yog ib lo lus nug uas cov phooj ywg hauv kev lag luam metallurgical xav paub. Refractory bricks feem ntau siv nyob rau hauv metallurgical furnaces xws li silica cib, corundum mullite cib, thiab magnesia-hlau spinel cib. Muaj ntau ntau hom refractory cib rau metallurgical furnaces, thiab cov nqi tshwj xeeb yuav tsum tau sib tham nrog cov chaw tsim khoom los xaiv cov cib refractory zoo tshaj plaws. Cov hauv qab no qhia txog cov feem ntau siv metallurgical rauv cib.

1. Cov ntxhia theem muaj pes tsawg leeg ntawm silica bricks yog tsim los ntawm tridymite thiab cristobalite, nrog ib tug me me ntawm quartz thiab vitreous. Thaum qhov kub thiab txias, qhov ntim ntawm tridymite, cristobalite thiab residual quartz hloov pauv zoo heev vim qhov hloov pauv ntawm cov khoom siv lead ua. Yog li ntawd, thermal stability ntawm silica bricks nyob rau hauv qis kub yog tsis zoo. Thaum siv, nws yuav tsum maj mam rhuab thiab txias hauv qab 800 ° C kom tsis txhob tawg. Yog li ntawd, nws tsis tsim nyog siv rau hauv qhov cub nrog qhov kub thiab txias hloov qis dua 800 ° C.

2. Corundum mullite cib yog cov khoom siv high-alumina refractory muaj li ntawm corundum thiab mullite. Corundum mullite cib xa mus rau cov khoom siv refractory ua los ntawm high-purity los yog cov ntaub ntawv ntshiab. Nws muaj qhov zoo ntawm qhov kub thiab txias zog, siab kub creep kev ua tau zoo, thermal shock kuj thiab corrosion kuj. Ob lub qhov cub tawg kub kub qhov cub thiab cov qhov cub ceramic yog qhov tsim nyog.

3. Magnesium-hlau spinel cib yog ua los ntawm cov khoom siv hluavtaws zoo zoo li cov khoom siv raw thiab ua tiav los ntawm cov txheej txheem tshwj xeeb. Cov khoom muaj cov yam ntxwv ntawm siab compressive zog, zoo thermal shock stability, zoo thermal creep kev ua tau zoo, thiab siab load softening kub. Nyob rau tib lub sijhawm, nws kuj tseem muaj kev sib xyaw ua ke ntawm magnesia-chrome cib thiab yooj yim lo rau ntawm daim tawv nqaij kiln, uas daws qhov teeb meem ntawm ib puag ncig cov pa phem ntawm hexavalent chromium uas ua rau hauv cov txheej txheem ntawm kev siv magnesia-chrome cib hauv cement kilns.