Main raw materials | high-quality coal, coconut shell, wood chips, etc. | Humidity resistance (relative humidity) | ≤80% |
Filter objects | all kinds of harmful gases |
Granularity(mm) | 4~8、6~12、8~16、8~30、10~30、12~40、20~40、30~60、40~80、40~150、200、325 | |||||||
Iodine adsorption value(mg/g) | ≥700 | ≥800 | ≥900 | ≥1000 | ≥1100 | ≥1200 | ≥1500 | ≥1600 |
Specific surface area( m²/g) | ≥900 | ≥1000 | ≥1100 | ≥1200 | ≥1300 | ≥1450 | ≥1700 | ≥1800 |
Carbon tetrachloride% | ≥39 | ≥50 | ≥60 | ≥70 | ≥80 | ≥90 | ≥95 | ≥99 |
strength(%) | ≤98 | ≤98 | ≤97 | ≤97 | ≤97 | ≤95 | ≤95 | ≤95 |
Benzene adsorption rate(%) | ≥50 | ≥55 | ≥60 | ≥75 | ≥80 | ≥85 | ≥90 | ≥95 |
Methylene blue(ml/g) | ≥5 | ≥6 | ≥8 | ≥10 | ≥12 | ≥14 | ≥16 | ≥18 |
Moisture(%) | ≤8 | ≤8 | ≤8 | ≤8 | ≤8 | ≤8 | ≤5 | ≤5 |
Ash content(%) | ≤5 | ≤4 | ≤4 | ≤3 | ≤2.5 | ≤2.5 | ≤2.5 | ≤2.5 |
Packing density(g/l) | 600-650 | 550-600 | 500-550 | 450-520 | 430-500 | 430-480 | 430-480 | 430-480 |