Bulo mai lanƙwasa mai lanƙwasa yana ɗauke da Al2O3 kimanin kashi 30% ~ 45%, kuma abun cikin silica ya yi ƙasa da kashi 78%. Bulo mai lanƙwasa mai lanƙwasa yana cikin kayan acid masu rauni. Bulo mai lanƙwasa mai lanƙwasa yana da juriya ga lalata acid da kuma lalacewar iskar acid, amma ƙarfin juriyar alkali yana da ɗan rauni. Bulo mai lanƙwasa mai lanƙwasa yana da halaye masu kyau na aikin zafi da kuma juriyar girgizar zafi mai kyau.
| Bulo Mai Lankwasa | |||
| Fihirisa | Bulo na Alumina Fireclay 40 – 45% | Bulo na Alumina Fireclay 30 – 35% | |
| Abu | Naúrar | 1600°C | 1500°C |
| Yawan Yawa | g/cm³ | 2.2 | 2.1 |
| Bayyanannen Porosity | % | 22 | 24 |
| Modulus na Rupture | kg/cm² | 90 | 80 |
| Ƙarfin Murkushewar Sanyi | kg/cm² | 300 | 250 |
| Faɗaɗawa ta layi 1350°C | % | 0.2 | 0.2 |
| Rashin juriya a ƙarƙashin kaya | °C | 1450 | 1300 |
Bulo mai lanƙwasa galibi ana amfani da shi don rufin rufin zafi ko kuma rufin rufin zafi na wasu kayan da ba su da ƙarfi. Rufin da ba su da ƙarfi ko kayan da ke da ƙarfi na masana'antu, kamar tanderun ethylene pyrolysis, tanderun bututu, tanderun gyaran ammonia na roba, janareto na iskar gas da kuma murhun murhu mai zafi, da sauransu.