Equipment and method for automatically detecting mineral separation ore size fraction

The invention discloses equipment and method for automatically detecting mineral separation ore fraction, and the equipment comprises a crusher; a material taking assembly is arranged at the top of the crusher; a particle size detection assembly which is connected with the material taking assembly; and a control system which is connected with the crusher, the material taking assembly and the particle size detection assembly; the particle size detection assembly comprises a diffusion cylinder used for diffusing the ore particles conveyed by the material taking assembly; a high-pressure fan which is in butt joint with the diffusion barrel and used for inputting high-pressure airflow into the diffusion barrel, the high-pressure airflow is used for diffusing ore particles in the diffusion barrel, and at least one CCD camera assembly isolated by transparent glass is arranged at the rear end of the diffusion barrel; the CCD camera assembly is used for collecting particle size distribution information of the ore par