Powder selecting device for cement production

The utility model provides a powder selecting device for cement production and relates to the technical field of powder selecting, the powder selecting device comprises a supporting frame and a box body, the box body is fixedly arranged on the supporting frame, a feeding hopper is fixedly arranged at the top of the box body, a discharging hopper is fixedly arranged at the bottom of the box body, a grinding assembly is arranged in the box body, a filtering assembly is arranged in the discharging hopper, and the grinding assembly is located under the feeding hopper; the filtering assembly is located below the grinding assembly, the grinding roller is rotationally installed in the box body, the grinding disc abuts against the bottom of the grinding roller, guide grooves are formed in the two opposite side walls of the box body, the grinding disc is connected with the guide grooves in a sliding mode, and a driving assembly is arranged in the box body and used for driving the grinding disc to move along the guide