In order to reduce the cost of power generation, Wucaiwan North No.1 power plant has been discharging Kaolin from No.3 to No.8 of the coal unloading ditch for blending coal. Due to the high viscosity of kaolin, the clay layer upon layer on the wall of the coal unloading ditch is overstocked, resulting in poor material flow, unstable instantaneous material flow on No.2 coal conveying belt under the coal unloading ditch, and unstable belt motor current.

        In order to solve this problem, starting from the morning shift on April 4, 2021, the coal handling professionals of WOM Wucaiwan project department led the operation shift and drivers to clean up the clay attached to the wall of the coal unloading ditch. After a day's cleaning, the cleaning work was completed before work in the afternoon. The coal blending meets the requirements of scientific proportioning, creating conditions for the safe and stable operation of the unit.(Liu Yuanli）