Taw qhia rau kev faib tawm ntawm siab alumina refractory cib Raws li cov ntsiab lus ntawm Al2O3

High alumina refractory cib muab faib ua peb qib raws li cov ntsiab lus ntawm Al2O3: Chav Kawm I (Al2O3> 75%); Chav Kawm II (Al2O3 yog 60% ~ 75%); Chav Kawm III (Al2O3 yog 48% ~ 60%). Raws li cov ntxhia muaj pes tsawg leeg, nws tuaj yeem muab faib ua: qis mullite (xws li sillimanite) thiab mullite (Al2O3 yog 48% ~ 71.8%), mullite-corundum thiab corundum-mullite (Al2O3 yog 71.8% ~ 95%), corundum (Al2O3) yog 95% ~ 100%) thiab lwm yam refractory cib.