MARINI ASPHALT PLANT TOP TOWER 4000

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.