Coal feeding accurate control and safety protection system for metallurgical furnace

The invention relates to a metallurgical furnace coal feeding accurate control and safety protection system which comprises a field weighing detection system, a frequency conversion control system, a pneumatic control system, a logic program and configuration picture and a DCS operation system. The weighing detection system, the frequency conversion control system and the pneumatic control system are electrically connected with the DCS operation system and are controlled by the DCS system after network communication, the DCS system realizes accurate coal feeding control on the metallurgical furnace according to logic programs and configuration pictures, and the logic programs and the configuration pictures comprise a PLC logic program, a DCS logic program, DCS picture configuration and upper computer picture configuration. According to the actual production condition and requirements of the metallurgical furnace, the coal feeding precise control and safety protection system is built, the smelting capacity of