Tam sim no, feem ntau siv cov kev faib tawm rau cov ntaub ntawv refractory yog cov tshuaj muaj pes tsawg leeg kev faib tawm, uas tuaj yeem muab faib ua cov ntaub ntawv refractory xws li silica, aluminosilicate, magnesia, dolomite, thiab carbon composite.
silica refractory
Silicon refractory khoom yog SiO. Cov khoom tseem ceeb, SiO ₂ refractory khoom, muaj ib tug loj feem ntawm tsis muaj tsawg tshaj li 93% thiab yuav ua tau zoo li tus los yog zoo li tus refractory khoom. Cov ntaub ntawv refractory muaj qhov zoo ntawm cov thermal conductivity, siab softening point, thiab muaj zog tiv taus acid thiab slag corrosion, tab sis lawv qhov tsis zoo yog thermal shock stability.
Aluminium silicate refractory khoom
Aluminum silicate refractory material is AI. ₂ O Å and SiO ₂ refractory materials are the main components. According to the different content of AI ₂ O Å in refractory materials, they can be divided into semi siliceous (15%~30% mass fraction), clay (30%~48% mass fraction), and high alumina (>48% pawg pawg) cov ntaub ntawv refractory.
Magnesium refractory khoom
Magnesium refractory khoom yog ib hom khoom siv refractory tsuas yog ua los ntawm periclase, nrog rau MgO pawg ntau tshaj 80%. Raws li kev cuam tshuam ntawm cov khoom siv magnesium raw khoom, cov khoom tseem ceeb ntawm magnesium refractory cov ntaub ntawv yog MgO, FeO, Fe ₂ O Å, AI ₂ O Å, SiO ₂, CaO, Cr ₂ O Å. Lub melting point ntawm MgO yog siab li 2800 degree, thiab hluav taws kub tsis kam ntawm magnesium refractory cov ntaub ntawv mus txog 2000 degree. Yog li ntawd, magnesium refractory cov ntaub ntawv muaj zoo kub-kub kuj.
Dolomite refractory khoom
Dolomite refractory khoom yog cov khoom siv alkaline refractory nrog dolomite ua cov khoom siv tseem ceeb thiab MgO thiab CaO ua cov khoom tseem ceeb. Qhov loj feem ntawm CaO yog 40% ~ 60%, thiab qhov loj ntawm magnesium oxide yog 30% ~ 40%.
Carbon composite refractory khoom
Carbon composite refractory khoom, tseem hu ua carbon uas muaj refractory khoom, yog ib tug refractory oxide nrog ob los yog ntau yam khoom sib txawv.
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