1. Ordinary magnesia alumina cib. Nws yog spinel alkaline refractory uas muaj txog 85 feem pua MgO thiab 5 feem pua ~ 10 feem pua Al2O3. Cov theem siv lead ua ntawm nws feem ntau yog tsim los ntawm periclase thiab magnesia-alumina spinel li matrix. Crystal network yog tsim tom qab crystallization ntawm spinel aggregate, uas ua rau lub cib qauv compact. Vim hais tias tsis muaj coarse aggregate siv nyob rau hauv kev tsim, tag nrho cov cib qauv yog uniform thiab lub pores yog xoob.
2. Magnesia-alumina spinel cib yog ib hom magnesia cib uas muaj magnesium thiab txhuas ua cov khoom siv pob zeb tseem ceeb. Nws yog tsim los ntawm kev ntxiv alumina hauv cov khoom siv los txhim kho thermal stability ntawm magnesia cib. Magnesia-alumina spinel cib muaj qhov zoo ntawm thermal stability, thiab nws yuav hnov mob nrog clinker thaum siv. Tom qab ntawd ib txheej nyias ntawm calcium aluminate tiv thaiv txheej yog tsim rau sab nraud ntawm cib, thiab nws cov kev tiv thaiv kev poob zoo dua li ntawm cov ncaj qha sib txuas magnesia-chrome cib.
3. Hloov kho magnesia-alumina spinel cib. Magnesia-alumina spinel cib tau ua tiav nyob rau hauv qhov kev hloov pauv ntawm cov cement rov qab kiln, tab sis nws yog ib qho yooj yim los npaj embrittlement thiab poob rau hauv qhov chaw tua hluav taws, cov tawv nqaij ntawm qhov cub tsis yooj yim rau dai, cov cement clinker tsis zoo rau alkali. vapor thiab kua theem permeability, thiab cov neeg kho tshuab kev nyuaj siab tshwm sim los ntawm lub deformation ntawm lub kiln lub cev tsis zoo, uas txwv nws daim ntawv thov nyob rau hauv lub firing cheeb tsam. Vim li no, kev hloov kho magnesia-alumina spinel cib haum rau sintering cheeb tsam hauv cement rov qab kiln tau tsim.
Daim ntawv thov ntawm nws: magnesia alumina cib yog dav siv nyob rau hauv non-ferrous metallurgical rauv, magnesia-alumina spinel cib yog dav siv nyob rau hauv cov cement hloov dua siab tshiab, thiab hloov magnesia-alumina spinel cib yog dav siv nyob rau hauv cement rov qab kiln sintering cheeb tsam. Lub thermal shock tsis kam ntawm nws yog zoo dua li ntawm magnesia cib, softening kub nyob rau hauv load yog siab tshaj 1580 degree, thiab softening kub ntawm high-purity nws nyob rau hauv load yuav ncav cuag 1600 ~ 1750 degree. Ntxiv rau cov ntsiab lus impurity hauv nws nrog qhov sib ntxiv ntawm A1203, qhov pib kub ntawm cov khoom muag muag feem ntau nce, thiab muaj tus nqi siab dua thaum cov ntsiab lus ntawm A1203 yog 3 feem pua ~ 10 feem pua. Thaum cov ntsiab lus ntawm A1203 tshaj 10 feem pua, nws pib txo qis. Thaum qhov kub thiab txias qis dua 1000 degree, elastic modulus ntawm magnesia alumina cib nce nrog qhov nce ntawm qhov kub, tab sis thaum kub siab tshaj 1000 degree, elastic modulus txo qis.
