Research Article
Economic and Environmental Evaluation and Optimal Ratio of Natural and Recycled Aggregate Production
Table 4
The specifications of machinery in the recycling plant.
| | Scenario 2 | | Step | Symbol | Machine & model | (KW) | | UP (USD) | (USD/year) | (USD/year) |
| | 1 | A21 | Hydraulic excavator. Komatsu PC 200-7, efficiency = 70% | 107 | 1 | 47568 | 12000 | 3948 | | A22 | Wheel loader. VOLVO L120F, efficiency = 73% | 179 | 1 | 105405 | 12000 | 9276 |
| | 2 | A23 | Vibrating feeder | 15 | 1 | 15860 | 56880 | 1849 | | A24 | Primary-jaw crusher | 90 | 1 | 66270 | 8757 | | A25 | Secondary-impact crusher | 250 | 1 | 57820 | 10541 | | A26 | Vibrating screening | 30 | 1 | 31730 | 2432 | | A27 | Magnetic separator | 3 | 1 | 11200 | 1622 | | A28 | Soft products separator | 5.5 | 2 | 11670 | 3892 | | A29 | Dust collector | 85 | 1 | 67000 | 6486 | | A30 | Control panel | — | 1 | 15240 | 85 | | A31 | Steel structure, 4 tons | — | 1 | 7300 | 715 | | A32 | Conveyor belt 1 × 11 | 7.5 | 1 | 6850 | 595 | | A33 | Conveyor belt 1.2 × 10 | 5.5 | 1 | 8970 | 541 | | A34 | Conveyor belt 1 × 19 | 11 | 1 | 9250 | 1027 | | A35 | Conveyor belt 1 × 25 | 15 | 1 | 11050 | 1351 | | A36 | Conveyor belt 1 × 10 | 4 | 1 | 6545 | 541 | | A37 | Conveyor belt 0.8 × 16 | 7.5 | 1 | 6500 | 865 | | A38 | Conveyor belt 0.65 × 20 | 7.5 | 2 | 6120 | 2162 | | A39 | Conveyor belt 0.65 × 12 | 5.5 | 1 | 4600 | 649 | | A40 | Conveyor belt 0.65 × 15 | 5.5 | 1 | 5170 | 811 | | A41 | Conveyor belt 0.65 × 18 | 5.5 | 1 | 5470 | 973 |
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t/h, , , , , years, and USD/kg.
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