Temperature-control blast furnace coal powder preparation system

The utility model relates to a temperature-control blast furnace coal powder preparation system which comprises a fume heating furnace, an air heating furnace, a grinder, a coal feeder, a coal powder collecting and conveying device, a main fume exhaust fan and a PID temperature control module. The PID temperature control module is connected with the outlet of the grinder. The utility model aims to provide a temperature-control blast furnace coal powder preparation system which breaks through the old control mode of taking the temperature at the outlet of the fume heating furnace as the PID main control point, and creates a new control mode which takes the temperature at the outlet of the grinder as the PID adjusting main control point of the fume heating furnace. The temperature-control blast furnace coal powder preparation system solves the technical problems that in the prior art the temperature of the grinder is easy to be out of control and that the pressure of the fume heating furnace is unstable.