English
Automated coal blending and loading system with online ash-content closed-loop control, VFD frequency adjustment, and multi-parameter monitoring for consistent commercial coal quality.
The Coal Blending and Loading Automation System calculates optimal feed rates for each coal type based on target ash content and individual bunker ash levels, achieving automated control of the coal blending and loading process. The system provides real-time monitoring of the entire coal selection, storage, blending, loading, and transportation chain, improving loading efficiency and effectively enhancing commercial coal quality.
Consistent coal quality is the defining metric that determines the commercial value of a mine's output. The Coal Blending and Loading Automation System addresses the challenge of producing uniform, specification-compliant coal from multiple sources of varying quality by employing real-time ash-content feedback to dynamically adjust the feed rate of each coal type. This closed-loop control ensures that the final blended product consistently meets target quality specifications, reducing quality variability and increasing customer satisfaction.
The system's parameter monitoring capabilities are comprehensive, tracking instantaneous flow, hourly accumulation, daily accumulation, monthly accumulation, average flow, ash content, and moisture content in real time. This multi-dimensional monitoring gives operators complete visibility into the blending process, enabling rapid identification of quality deviations and immediate corrective action. The loading function provides centralized equipment control, cumulative statistics, and over-quantity alarms, preventing both under-loading (which shortchanges customers) and over-loading (which creates financial losses and safety hazards).
Two blending modes are supported. Manual blending allows operators to remotely adjust variable-frequency drives (VFDs) to achieve manual coal blending — useful for non-standard customer requests or testing new blending ratios. Automatic blending, the primary operational mode, employs online ash-content closed-loop control to automatically adjust VFD frequencies and maintain target quality without operator intervention. This automation not only improves consistency but reduces the labor requirements and human-error risks associated with manual blending.
The detection equipment suite includes ash analyzers, level indicators, and belt scales — each selected for industrial reliability and accuracy. Control is achieved through VFD frequency adjustment, enabling smooth and precise feed rate modulation. The system's alarm function covers equipment faults, system faults, and network faults, ensuring that any disruption to the blending and loading process is immediately detected and communicated to operators for prompt resolution.
| Parameter | Value |
|---|---|
| Detection Equipment | Ash analyzer, level indicator, belt scale |
| Control Method | VFD frequency control |
| Monitoring Parameters | Instantaneous flow, ash, moisture, multi-period accumulation |
| Blending Modes | Manual (remote VFD) and automatic (ash closed-loop) |
Coal washing and processing, coal blending and loading automation, commercial coal quality management, and mine product quality control.
Flameproof and intrinsically safe belt surface flaw detection image processor for real-time detection of bulges, peeling, cracking, tearing, edge wear and belt-joint abnormalities, AC 127 V.
Four-module environmental monitoring system for metal and non-metal mines — safety monitoring, precise personnel positioning, wireless communication and emergency broadcasting with 2-hour UPS backup.
CAD-based mine design assistance system with GIS and 3D GIS technology for roadways, sections and intersections, integrating 2D and 3D design inside CAD for coal-mine engineers.
Flameproof solenoid valve with AC electromagnet drive for automatic one-way control of water and non-corrosive liquids in mines and other gas-risk environments.
Flameproof reversible vacuum magnetic starter for 380/660/1140 V mine motors up to 200 A, with local/remote control and overload, short circuit, phase-loss and leakage protection.
Flameproof and intrinsically safe vacuum feeder switch for 1140 V/660 V mine networks up to 1000 A, with undervoltage, overload, short circuit and selective leakage protection.
Flameproof and intrinsically safe mining speaker with an imported high-power stereo hi-fi amplifier chip for clear voice and alarms in roadways, rest rooms and parking areas.
Flameproof and intrinsically safe lithium battery power supply for underground coal mines, with automatic fast switchover and certified safe operation in gas and coal-dust environments.
Contact Us
The company is a provider of complete solutions for mine rail transportation dispatching systems and intelligent mine signal control and safety dispatching.
