Ningtiaota Mining has focused on building a comprehensive intelligent coal quality management system this year, aligning with its "Quality and Efficiency Improvement" theme. The company has achieved a raw coal washing rate exceeding 90% while maintaining stable calorific value at 5,800 kcal/kg. First-quarter revenue and profit increased by 334 million yuan and 326 million yuan year-over-year, respectively.
Operational control has become more reliable through the implementation of an equipment failure预警 platform at the coal preparation plant. Equipped with over 200 temperature-vibration sensors and 1,200 smart perception terminals, the system establishes an integrated coal quality management process covering monitoring, analysis, and adjustment. This enables full tracking of key processes from raw coal washing to processing and product storage, with failure prediction accuracy reaching 98%. AI-powered video systems now provide full coverage of production areas, precisely monitoring equipment status and enabling differentiated maintenance strategies. These measures have increased equipment operating time by 4.59% while reducing failure duration by 13.22%, with coal screening volume growing 2.32% year-over-year.
The washing process has been refined through self-optimizing models that enable "autopilot" precision control. The heavy medium separation system automatically adjusts medium density through intelligent algorithms, maintaining control accuracy within ±0.005g/cm³ and producing an additional 25,000 tons of high-quality coal annually. The intelligent concentration system automatically adjusts reagent ratios, reducing consumption by 15% while maintaining 100% circulating water qualification rate. Filter presses now feature intelligent queuing for discharge and automatic start/stop based on feed concentration, improving工作效率 by 30%. Startup time has been reduced from 30 to 10 minutes, and conveyor bridge idle time cut by 20 minutes, significantly reducing energy waste.
The benefits are substantial: centralized equipment control and one-button start/stop operations have reduced staffing needs by 66 positions, saving 9.9 million yuan annually in labor costs. Production dispatch response efficiency improved by 40%, while clean coal recovery rate increased 0.5%, generating over 9 million yuan in additional annual benefits. The company has implemented automated coal quality analysis systems, online monitoring, and intelligent testing centers to ensure accuracy of key indicators including ash content, moisture, and calorific value. The "Ninghua No.1" coal brand now holds a value of 15.516 billion yuan.
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