Cov khoom sib txuas tseem ceeb (impellers thiab liners) yog tsim los ntawm cov hlau uas muaj zog, hnav-resistant lossis cov hlau tshwj xeeb thiab tau ua kom zoo dua los tiv taus qhov hnav-hardened ntawm cov ntaub ntawv refractory (xws li corundum, silicon carbide, thiab spinel), ua kom lub neej khoom siv ntev dua thiab txo cov nqi txij nkawm.
Txhim kho cov khoom siv molding ntawm cov khoom siv refractories kom zoo dua;
Cov av nkos uas tau do thiab sib tov yog sib xws thiab homogeneous, thiab tsis sib cais;
Nyob rau hauv lub hauv paus ntawm kev ua kom muaj plasticity, qhov ceev ntawm qhov sib tov yog siab, thiab tsis muaj looseness ntawm cov av nkos.
