Coal preparation process flow

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In the coal preparation process, after the purchased refined coal is delivered by truck, it is directly unloaded into the coal receiving pit. From there, a reciprocating feeder beneath the pit feeds the coal into conveyor belt 1; from there, it is transferred via conveyor belt 2 to either of the main belts of the stacker-reclaimer. The stacker-reclaimer then deposits the coal in the refined coal storage area. Alternatively, the coal can be sent directly to the top level of the coal blending silos using conveyor belts 3 and 4, with an electric unloader installed on conveyor belt 4 being used to unload the coal into the respective blending silos, thereby enabling direct transfer of the coal. The electronic automatic batching scale located beneath the coal blending bin distributes the coal in the appropriate proportions to belt conveyor No. 5. From there, it is transferred via belt conveyors No. 6 and No. 7; after iron removal using a permanent magnet magnetic separator, the coal enters the reversible impact hammer crusher in the crushing plant, where it is crushed so that over 90% of it is below 3 mm in size, with more than 50% being less than 1 mm. Once this is achieved, the coal is transported via belt conveyors No. 8 and No. 9 as well as the reversible batching conveyor to the coal storage bin at the top of the coke oven, where it is used in the coke oven production. Table of Main Coal Preparation Equipment
Serial Number | Equipment Name | Specification Model | Unit | Quantity | Remarks
1 | Coal Conveyor 1 | B=1200mm, V=1.6m/s, Q=600t/h | Set | 1 |
2 | Coal Conveyor 2 | B=1200mm, V=1.6m/s, Q=600t/h | Set | 1 |
3 | Conveyor Belt for Heap Loader Main Unit | B=1200mm, V=1.6m/s, Q=600t/h | Set | 2 |
4 | Coal Conveyor 3 | B=1200mm, V=1.6m/s, Q=600t/h | Set | 1 |
5 | Coal Conveyor 4 | B=1200mm, V=1.6m/s, Q=600t/h | Set | 1 |
6 | Coal Conveyor 5 | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
7 | Coal Conveyor 6 | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
8 | Coal Conveyor 7 | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
9 | Coal Conveyor 8 | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
10 | Coal Conveyor 9 | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
11 | Reversible Distribution Conveyor | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
12 | Bucket Wheel Heap Loader | B=1200mm, V=1.6m/s; Loading capacity: 600t/h; Unloading capacity: 300t/h | Set | 2 |
13 | Loader | Bucket capacity: 3m³; Maximum lifting capacity: 5t | Set | 2 |
14 | Bulldozer | Q=214 m³/h | Set | 2 |
15 | Reversible Impact Hammer Crusher | Φ1600×1800; Production capacity: 300t/h | Set | 2 |
16 | Reciprocating Feeder | Feeding capacity adjustment range: 300t/h | Set | 6 |
17 | Fixed Unloading Trolley | B=1200mm, V=1.6m/s, Q=600t/h | Set | 1 |
18 | LST Open-Air Belt Conveyor Dewatering and Drainage Device | B=1200mm, V=1.6m/s, Q=600t/h | Set | 2 |
19 | Electro-hydraulic Flat Gate | Inner opening size: 800×800 | Set | 9 |
20 | Permanent Magnet Magnetizer | Applicable belt width: B=1000mm | Set | 1 |
21 | Electro-hydraulic Three-way Distributor | Interface size: 1250×800; Flap width extension a=60° | Set | 1 |
22 | Belt Conveyor Midpoint Sampler | B=1000mm, V=1.6m/s, Q=300t/h | Set | 1 |
23 | Automatic Humidification Device | One set of ZDS-1 humidification device | B=1000mm, V=1.6m/s, Q=300t/h | Set | 2 |
24 | Electronic Belt Scale | B=1200mm, V=1.6m/s; Conveying capacity: 0-700t/h | Set | 1 |
25 | Electronic Belt Scale | B=1200mm, V=1.6m/s; Conveying capacity: 0-700t/h | Set | 1 |
26 | Electronic Automatic Batching Scale System | B=1000mm, L=2700mm; Weighing range: 0-150t/h; Measurement accuracy: ≤0.5% | Set | 1 |