Applicable industries | Materials | Classification of particle size (mm) |
Thermal power plant | Raw coal, lignite, coal gangue, middlings, coal slime, petroleum coke, anthracite, oil shale | 8, 10, 13, 30 |
Coal mining and washing plant | Various raw coal, gangue, middlings, coal slime | 4, 6, 13, 50, 80, 100 |
Coking | Coking coal | 3 |
Coal liquefaction, gasification and chemical | Various raw coal, petroleum coke | 3, 6, 10, 15, 30 |
Metallurgy, chemical | Limestone, white mica, phosphate ore, oil shale | 3-30, 30-80 |
Aluminium oxide, laterite nickel ore, gypsum, coke, furnace charge | 3-80 | |
Construction material | Limestone, dinas, construction waste | 3-5, 10-20, 20-40 |
Item | Before | After | Conclusion |
Equipments | SZZ-800 twin roll screen | CRS2220 cross screen | |
Max. handling capacity | 550t/h | 650-750t/h | Increased 45.5% |
Screening efficiency | 0-30% (plugging & pegging) | ≥91% | Always above 90% |
Power consumption of coal feeding system | 570536kwh (Apr. 2013) | 375315kw (Apr. 2013) | Saved USD178000 of power consumption |
710016kwh (May 2013) | 381704kw (May 2013) | ||
Fly ash & slag (2# boiler) | Fly ash: 2.27% | Fly ash: 2.06% | Decreased 9.25% |
Slag: 0.42% | Slag: 0.29% | Reduced 31% | |
Annual maintenance cost | USD30000/set (maintenance, cleaning, spare parts) | Less than USD3000 (spare parts) | Significantly reduced labor and maintenance cost |