MARINI ASPHALT PLANT - MODULAR GABLE TYPE BEST TOWER 4000
Year: 2018 August | Location: NİJER / Niamey
Usage: 190.000 tons of asphalt produced
The asphalt plant is designed to be manufactured with 320 tons/hour bituminous at 160 ° C in the following standards:
- Aggregate moisture content: 3%
- Agreement temperature for entering the dryer: 10 ° C
- Working age: Sea level
- Average aggregate specific: 1.650kg / m³
- No.6 fuel oil lower calorific value: 9.200kCal / kg (82% combustion efficiency)
- Diesel oil lower calorific value: 10.200kCal / kg (% 86 combustion efficiency)
- Natural gas and LNG lower calorific value: 8.250kCal / Nm³ (92% burning efficiency)
- Residual moisture in the mixture: ≤ 0.3%
- Maximum aggregate diameter ≤ 40mm
- Contract amount to pass through 3x3mm sieve ≤ 40%
Note: Aggregate must be cubic, not contain foreign matter and/or deformed. Production capacity tolerance is ± 10% depending on environment, temperature and operating conditions.
TOP TOWER 4000 ASPHALT PLANT EQUIPMENT SPECIFICATIONS
1. Cold Feeding System
General Features: 5 x 24m³ capacity, 3.500mm loading width. Anti-clogging with vibrator for 2 x 0.45kW sand silo. Capacity control with computer system from the cabin with variable flow dosing bands.
- Dosage Bands: 10-160ton/h capacity, inverter controlled. 600mm wide dosing belt with BONFIGLIOLI reducer and 1.1kW electric motor.
- Collection Band: 400ton/h capacity. 700mm wide collection belt. Length: 24.000mm. BONFIGLIOLI reducer with 7.5kW electric motor.
- Feeding Band: 400ton/h capacity. 700mm wide collection belt. Length: 13.000mm. Inclination: 18°. BONFIGLIOLI reducer with 7.5kW electric motor.
2. Aggregate Drying Drum (Dryer) and Burner
- E 250 L type drying drum. Diameter: Ø2.500mm, Length: 10.000mm.
- Motor power: 4 x 18,5kW. Body sheet thickness: 12mm. Insulation feature: 50mm, 80kg/m³, aluminum coated.
- Dryer Burner: Proportional natural gas-fuel oil combi burner. Capacity: 19.000kW (16.340.000 kCal/h). Burner fan motor power: 55kW.
3. Filter Group
Dry type bag filter with air flow cleaning system. 220 ° C temperature resistant, 400g/m² aramidic (raw material of NOMEX fabric) filter bags. Filter surface area: 970m². Number of filter bags: 540.
- Chimney Fan: Capacity: 84.000Ecu.m/h = 54,860Ncu.m/h. Chimney fan motor power: 132kW.
- Chimney Fan Flap: Air capacity adjustment with servomotor controlled chimney fan flap.
- Recovered Filler Silo: Silo capacity: 45tons (40m³). Filler spiral motor power: 7.5kW.
4. Weighing-Mixing Tower
Modular type, sieve, five type asphalt plant weighing-mixing tower. Platforms, stairs and handrails are designed and manufactured in CE norms.
- Aggregate Elevator: Chain - bucket elevator. Capacity: 320ton/h. Motor power: 30kW.
- Sieve: 5 + 1 selection vibrating sieve. 37m² total sieve surface area. Sieve vibrator motor power: 2 x 9,6kW.
- Hot Aggregate Silo: 6 mesh hot aggregate silo; bypass + 5 selections. Silo capacity: 80 tons.
- Mixer: Pugmill (twin shaft) type double shaft, double mixing arm mixer. 2x 55kW mixer motors. Mixer capacity: 4000kg. Max 90 mix/hour capacity: 360 tons/hour.
- Finished Asphalt Silo: 70 tons capacity finished product asphalt silo, double compartment.