(1) Cov khoom ntawm high alumina bricks
①Siab refractoriness,refractoriness feem ntau yog 1750 ~ 1790 degree.
②Lub softening kub nyob rau hauv load yog siab,feem ntau 1400-1520 degree . Vim nws muaj tsawg impurities, lub load softening point yog siab; kev ua haujlwm kub ntawm high-alumina bricks yog cuam tshuam nrog microstructure ntawm cov khoom. Qhov kub tsis kam ntawm qhov matrix feem ntau qis dua li ntawm qhov particle. Thaum siv, lub molten slag corrodes lub matrix ib feem ua ntej. Yog li ntawd, lub matrix ib feem thiab cov qauv ntawm cov khoom yuav raug kho kom zoo thiab kho kom zoo dua cov khoom siv high-temperature kev ua tau zoo.
③Zoo slag kuj; siab alumina cib muaj ntau ntawm Al2O3, uas yog ze rau cov khoom nruab nrab. Lub slag tsis kam ntawm high-aluminium cov ntaub ntawv nce nrog qhov nce ntawm Al2O3 cov ntsiab lus, tab sis nws cov corrosion kuj rau alkaline slag yog qis dua li cov khoom siv alkaline refractory. Qhov txo qis ntawm cov ntsiab lus impurity yog qhov tsim nyog rau kev txhim kho cov slag kuj. Nyob rau tib lub sijhawm, nce qhov ntom ntawm cov ntaub ntawv thiab txo cov porosity kuj yog cov kev ntsuas zoo los txhim kho lawv cov slag kuj.
④Zoo thermal stability; brick expansion coefficient yog me me. Lub thermal poob siab tsis kam ntawm siab alumina cib yog qhov phem dua li cov av nplaum cib, uas yog ze rau cov ntxhia hauv cov khoom siv. Qib thib ib thiab qib thib ob siab alumina cib yog qhov phem dua li qib peb qib siab alumina cib. Hauv kev tsim khoom, cov khoom siv thermal poob siab feem ntau yog txhim kho los ntawm kev txhim kho cov qauv qauv ntawm cov khoom siv los yog ntxiv qee qhov ntawm cov khoom siv hluavtaws (2MgO·2Al2O3·SiO2) thiab lwm yam minerals rau cov khoom xyaw.
