Corundum funfun ni a ṣe labẹ awọn ipo iwọn otutu giga ju iwọn 2000 lọ.Nipasẹ awọn ilana pupọ pẹlu fifun pa, apẹrẹ ati sieving, o tayọ ni irisi ati lile bi ohun elo pataki ti a lo lọpọlọpọ.Corundum funfun kii ṣe giga nikan ni líle, ṣugbọn tun brittle ni sojurigindin, lagbara ni gige agbara.O tun ṣe daradara ni idabobo, didin ara ẹni, wọ resistance ati iba ina gbona.Nibayi, o jẹ sooro si acid ati ipata alkali ati iwọn otutu giga.Nitorinaa, bi ohun elo lile nla, corundum funfun ni awọn ohun-ini to dara julọ.
Aṣoju ti ara-ini
| Lile | 9.0 mohs |
| Àwọ̀ | funfun |
| Apẹrẹ ọkà | igun |
| Ojuami yo | ca.2250 °C |
| Iwọn otutu iṣẹ ti o pọju | ca.1900 °C |
| Specific walẹ | ca.3,9 g/cm3 |
| Olopobobo iwuwo | ca.3.5g/cm3 |
Aṣoju ti ara onínọmbà
| White dapo Alumina Makiro | Fuse funfunAlumina lulú |
| Al2O3 | 99.5% | 99.5% |
| Nà2O | 0.35% | 0.35% |
| Fe2O3 | 0.1% | 0.1% |
| SiO2 | 0.1% | 0.1% |
| CaO | 0.05% | 0.05% |
Awọn iwọn ti o wa
Funfun dapo alumina Makiro
| PEPA | Apapọ ọkà (μm) |
| F 020 | 850 – 1180 |
| F 022 | 710 – 1000 |
| F 024 | 600 – 850 |
| F 030 | 500 – 710 |
| F 036 | 425 – 600 |
| F 040 | 355 – 500 |
| F 046 | 300 – 425 |
| F 054 | 250 – 355 |
| F 060 | 212 – 300 |
| F 070 | 180 – 250 |
| F 080 | 150 – 212 |
| F 090 | 125 – 180 |
| F 100 | 106 – 150 |
| F 120 | 90 – 125 |
| F 150 | 63 – 106 |
| F 180 | 53 – 90 |
| F 220 | 45 – 75 |
| F240 | 28 – 34 |