Items | Chemical kuumbwa (chikamu cheMisa)/% | Kuwanda kwehuwandu g/cm³ | Zviripachena porosity% | Refractoriness ℃ | 3Al2O3.2SiO2 Phase (Chikamu cheMisa)/% | |||
Al₂O₃ | TiO₂ | Fe₂O₃ | Na₂O+K₂O | |||||
SM75 | 73~77 | ≤0.5 | ≤0.5 | ≤0.2 | ≥2.90 | ≤3 | 180 | ≥90 |
SM70-1 | 69~73 | ≤0.5 | ≤0.5 | ≤0.2 | ≥2.85 | ≤3 | 180 | ≥90 |
SM70-2 | 67~72 | ≤3.5 | ≤1.5 | ≤0.4 | ≥2.75 | ≤5 | 180 | ≥85 |
SM60-1 | 57~62 | ≤0.5 | ≤0.5 | ≤0.5 | ≥2.65 | ≤5 | 180 | ≥80 |
SM60-2 | 57~62 | ≤3.0 | ≤1.5 | ≤1.5 | ≥2.65 | ≤5 | 180 | ≥75 |
S-Sintered; M-Mullite; -1: chikamu 1
Mienzaniso: SM70-1, Sintered Mullite, Al₂O₃: 70%; Grade 1 chigadzirwa
Kunyangwe mullite iripo sechisikigo chicherwa, zvinoitika mumasikirwo hazviwanzo.
Iyo indasitiri inotsamira pane ekugadzira mullites ayo anowanikwa nekunyungudusa kana 'calcining' akasiyana alumino-silicates akadai se kaolin, ivhu, kashoma andalusite kana yakanaka silica uye alumina kune yakanyanya tembiricha.
Imwe yenzvimbo dzakanakisa dzemullite ndeye kaolin (se kaolinic clays). Yakanakira kugadzirwa kwemarefractories akadai seakapfurwa kana asina kupiswa zvidhinha, castables uye musanganiswa wepurasitiki.
Sintered mullite uye fused mullite inonyanya kushandiswa kugadzira refractories uye kukanda simbi uye titanium alloys.
• Good creep resistance
• Kuwedzera kwekushisa kwepasi
• Low thermal conductivity
• Kugadzikana kwakanaka kwemakemikari
• Yakanakisa thermo-mechanical kugadzikana
• Excellent thermal shock resistance
• Low porosity
• Kureruka kana kuenzaniswa
• Oxidation resistance