Tipas | Feldšpatas | Feldšpatas-Molai | Molajaus akmuo | Molai-korundas | Korundas | |||||
Prekė | ||||||||||
Cheminė sudėtis | Al₂O₃ | 20–30 | 30–45 | 45–70 | 70–90 | ≥90 | ||||
Al₂O₃ + SiO₂ | ≥90 | |||||||||
Fe2O3 | ≤1 | |||||||||
Vandens adsorbcija (%) | ≤5 | |||||||||
Atsparumas rūgštims (%) | ≥98 | |||||||||
Atsparumas šarmams (%) | ≥80 | ≥82 | ≥85 | ≥90 | ≥95 | |||||
Darbinė temperatūra (°C) | ≥1300 | ≥1400 | ≥1500 | ≥1600 | ≥1700 | |||||
Gniuždymo stiprumas | Φ3mm | ≥400 | ≥420 | ≥440 | ≥480 | ≥500 | ||||
Φ6 mm | ≥480 | ≥520 | ≥600 | ≥620 | ≥650 | |||||
Φ8mm | ≥600 | ≥700 | ≥800 | ≥900 | ≥1000 | |||||
Φ10mm | ≥1000 | ≥1100 | ≥1300 | ≥1500 | ≥1800 | |||||
Φ13mm | ≥1500 | ≥1600 | ≥1800 | ≥2300 | ≥2600 | |||||
Φ16mm | ≥1800 | ≥2000 | ≥2300 | ≥2800 | ≥3200 | |||||
Φ20mm | ≥2500 | ≥2800 | ≥3200 | ≥3600 | ≥4000 | |||||
Φ25mm | ≥3000 | ≥3200 | ≥3500 | ≥4000 | ≥4500 | |||||
Φ30mm | ≥4000 | ≥4500 | ≥5000 | ≥5500 | ≥6000 | |||||
Φ38mm | ≥6000 | ≥6500 | ≥7000 | ≥8500 | ≥10000 | |||||
Φ50mm | ≥8000 | ≥8500 | ≥9000 | ≥10000 | ≥12000 | |||||
Φ75mm | ≥10000 | ≥11000 | ≥12000 | ≥14000 | ≥15000 | |||||
Tūrinis tankis (kg/m3) | 1100–1200 | 1200–1300 | 1300–1400 | 1400–1550 m. | ≥1550 |
Skersmuo | 6/8/10 | 2020/25/16/13 | 30/38/50 | 60/75 |
Skersmens tolerancija | ± 1,0 | ± 1,5 | ± 2,0 | ± 3,0 |
Porų skersmuo | 2-3 | 3–5 | 5-8 | 8–10 |