Lightweight feature extraction model and flotation process operation state evaluation method

The invention discloses a lightweight feature extraction model and a flotation process operation state evaluation method. The model comprises a first teacher module, a second teacher module and a third teacher module, wherein the first teacher module is configured to generate a first roughing image feature and a first scavenging image feature according to a foam image; the second teacher module is configured to generate a first data feature according to the foam data; the student module is configured to generate a second roughed image feature according to the first roughed image feature; generating a second scavenging image feature according to the first scavenging image feature; generating a second data feature according to the first data feature; the fusion module is configured to fuse the second roughing image feature, the second scavenging image feature and the second data feature to generate a first fusion feature, and generate a state level label according to the first fusion feature; and the state grad