High alumina refractory cib, silicate refractory nrog cov ntsiab lus alumina ntau tshaj 48 feem pua. Alumina los yog lwm yam siab alumina feedstocks yog tsim thiab calcined. Thermal stability, siab refractoriness ntawm ntau tshaj 1770 degree. Zoo slag kuj. High-alumina bricks yog cov feem ntau siv ntau hom refractory bricks, yog li tus nqi ntawm high-alumina bricks ncaj qha cuam tshuam rau tag nrho cov nqi ntawm cov lag luam.
An important characteristic of a high alumina refractory brick is the structural strength at high temperature, which is usually evaluated by the heavy softening deformation temperature. Its high temperature creep was also measured to reflect its high temperature structural strength. The experimental results show that the softening temperature increases with the increase of Al2O3 content. The factory of high alumina bricks is divided into three levels according to the content of 3 oxide and 2 aluminum Al2O3: Level I Al2O3 content>75 feem pua; Qib II Al2O3 cov ntsiab lus yog 60 feem pua ~ 75 feem pua; Qib III Al2O3 cov ntsiab lus yog 48 feem pua ~ 60 feem pua Al2O3 cov ntsiab lus, feem ntau Piv txwv li, peb qib tau muab faib ua peb qib siab alumina cib nqe ladders.
Cov ntsiab lus alumina nyob rau hauv high-alumina cib yog ntau tshaj 48 feem pua, uas yog raw khoom ntawm nruab nrab refractory cib manufacturers. Alumina los yog lwm yam siab alumina feedstocks yog tsim thiab calcined. High tshav kub kuj, refractory cib Hoobkas saum toj no 1770. Nrog zoo slag tsis kam, nws yog siv rau lub cub tawg hauv ob sab phlu, iav rauv, cement rotary rauv, thiab lwm yam. Cov khoom muaj qhov zoo ntawm qhov kub thiab txias creep, muaj zog corrosion kuj, zoo thermal shock kuj thiab yog li ntawd. Haum rau nruab nrab thiab loj blast furnaces.
*Technical high-alumina cib zoo ib yam li cov cement clinker av nplaum cib. Qhov txawv yog tias qhov kev faib ua feem ntawm cov cement clinker yog siab dua, uas tuaj yeem siv tau li 90 ~ 95 feem pua, tawg los ntawm kev txheeb xyuas thiab kev tshuaj xyuas ntawm cov clinker yav dhau los kev faib tawm thiab tshem tawm cov hlau. Kev tua hluav taws kub yog qhov siab, xws li 1500 ~ 1600 degree thaum tua hluav taws kub alumina cib hauv qhov cub. Lub refractoriness ntawm siab alumina cib yog siab dua li cov av nplaum cib thiab semi-silica cib, thiab cov refractoriness tuaj yeem ncav cuag 1750 ~ 1790. Nws yog cov khoom siv refractory zoo heev. Qhov siab dua qhov hluav taws kub, qhov ua tau zoo dua thiab hnyav dua tus nqi txheeb ze.
