1. Koj tuaj yeem siv nws los hloov alumina slurry raws li cov khoom siv refactory.
2. Yuav siv tau los ua tus ntxiv los tsim cov khoom lag luam amorphous thiab cov khoom tshwj xeeb, ua rau lawv muaj zog dua thiab txhim kho qhov ntsuas kub.
3. Yuav siv tau los ua ib lub chaw ruaj ruaj rau kev sau cov ntaiv.
4. Yuav siv tau los ua kev ntxiv rau kev khi, khi, co coavulants thiab lwm yam khoom lag luam refactory.