A new fine coal blending facility for power generation is constructed in Huaneng coal transfer terminal of Taicang port, which could supply low cost blending coals for boiler of power plant keeping in highefficiency and stable performance. The closed-loop coal flow control composed of PLC, accurate belt scale and feeder with adjustable eccentric block wheel is adopted in real-time coal blending process of this new facility.The coal blending completed in the shiploading process on belt conveyors of Huaneng coal transfer terminal has outstanding characteristics of lower investment and operation cost, controllable and stable properties of products.