Plaub tus yam ntxwv zoo ntawm cov alumina high kas cuzumina feem ntau yog manifested hauv:
1. Tus nqi ntawm cov ntseeg tau siv yog tsawg, thiab cov ntsiab lus calcium nyob rau hauv high alumina castables tsuas yog 1/4 {5 ntawm qhov ntawd hauv kev tswj hwm kev hloov kho. Yog li ntawd, tus naj npawb ntawm cov theem qis qis hauv qis Mev Alumina Castables tau raug txo, ua rau muaj kev txhim kho tseem ceeb hauv kev ua haujlwm kub;
2. Kev siv dej siv dej tsawg, feem ntau 6-7% ntawm qhov hnyav ntawm high alumina Castable, yog li ntawd nws muaj qhov ntom ntom thiab porosity high;
3. Tsis yog nws muaj chav sov kub tsis tau txo dua tom qab nruab nrab thiab kub kev kho mob ntawm 3-5 zaug uas yog cov khoom siv refractory;
4. Nws tau zoo ntim ruaj khov ntawm cov kub. Txawm hais tias nws yog ib qho unburned thiab unhaped refractory cov khoom, lub ntim shrinkage yog me me tom qab ziab thiab kho.
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