
1) Nika ƙwallon yumbu ɗaya ce mafi kyau ta niƙa ƙwallon ƙwallo, tana iya kiyaye tsarki da inganta kwanciyar hankali na kayan da aka niƙa.
2) An yi amfani da ƙwallon niƙa ta alumina sosai a cikin injinan ƙwallo a matsayin kayan gogewa don kayan yumbu da kayan glaze a masana'antun yumbu, masana'antun siminti, masana'antun enamel da gilashin.
3) Manyan fasaloli sune babban yawa, tauri da ƙarfi mai yawa, juriyar lalacewa mai yawa, kwanciyar hankali na zafi, juriyar tsatsa da rashin gurɓatawa da sauransu.
4) A lokacin aikin gogewa/niƙa, ƙwallon yumbu ba za ta karye ba, ba za ta gurɓata kayan da za a niƙa ba.
5) Nau'i: Dangane da abun da ke cikin aluminum oxide: 60-70%, 65-75%, 95%.
| Ƙayyadewa | 65Alumina Ball | 75Alumina Ball | 90Alumina Ball | 92Alumina Ball | 95Alumina Ball | 99Alumina Ball |
| Al2O3(%) | ≥65 | ≥75 | ≥90 | ≥92 | ≥95 | ≥99 |
| Fe2O3(%) | ≤0.5 | ≤0.5 | ≤0.1 | ≤0.1 | ≤0.1 | ≤0.1 |
| Taurin Moh | 8 | 8~9 | 9 | 9 | 9 | 9 |
| Shakar Ruwa (%) | ≤0.05 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.01 |
| Yawan yawa (g/cm3) | ≥2.95 | ≥3.25 | ≥3.55 | ≥3.60 | ≥3.65 | ≥3.8 |
| Ƙarfin Murkushewa (MPa) | ≥1650 | ≥1700 | ≥1900 | ≥2000 | ≥2250 | ≥2500 |
| Asarar Kuraje (%) | ≤0.03 | ≤0.02 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 |
| Bukukuwan Nika na Alumina Masu Girma | Matsakaici Alumina Nika Ƙwallo | Bukukuwan Nika na Alumina da aka Carbonized | |
| Launi | Fari | Fari | Baƙi mai launin toka |
| Tsatsa | Ba Izini ba | Ba Izini ba | Ba Izini ba |
| Rashin tsarki | Ba Izini ba | Ba Izini ba | Ba Izini ba |
| Ramin kumfa | Sama da ф1mm ba izini ba, girman a cikin ф0.5mm yana ba da damar ƙwallo 3 | ||
| Aibi | Matsakaicin girman a cikin ф0.3mm yana ba da damar ƙwallo 3 | ||