Table 3 Equipment information during the experimental process.
Information | Coal dust sampler | Coal dust dispersibility tester |
|---|---|---|
Model | CCZ-20A | Rise-3022 Plus |
Manufacturer | Changshu Deyu Mining Electromechanical Co., Ltd | Jinan Runzhi Technology Co., Ltd |
Technical Specifications | Sampling Flow Rate: 20L/min Load Capacity: > 200 Pa Sampling Flow Rate Error: ≤ 2.5% Sampling Flow Rate Stability: ≤ 5% Flow Meter Accuracy: No less than grade 2.5 Sampling Time Error: Not exceeding 1 s within 5 min Sampling Range: Total dust or respirable dust | Measurement range: 0.1–3500 μm Microscope: Olympus CX33 Digital magnification: > 8000× Maximum resolution: 0.1 μm/pixel Repeatability error: < 1% CCD camera: ≥ 10 megapixels Automatic segmentation speed: ≤ 1 s Segmentation success rate: ≥ 99% |
