1. Koj tuaj yeem siv nws los hloov alumina sludge raws li cov khoom siv refractory.
2. Yuav siv tau los ua tus ntxiv los tsim cov khoom lag luam amorphous thiab tshwj xeeb ntawm cov khoom lag luam refactory, uas ua rau lawv muaj zog thiab txhim kho lawv cov kev ua tau zoo ntawm qhov kub.
3. Yuav siv tau los ua cov phau ntawv casting los sau cov ntaiv.
4. Yuav siv tau los ua kev ntxiv rau kev khi, khi, co coavulants thiab lwm yam khoom lag luam refactory.
