Flotation process problem diagnosis method based on MLA

The invention discloses an MLA-based flotation process problem diagnosis method, which comprises the following steps of S1, performing process examination sampling on each process node in a process of a flotation plant, and collecting current process conditions; s2, measuring the working concentration, the grade, the size fraction composition and the target metal content of each size fraction of the obtained sample; s3, MLA measurement analysis is conducted on the raw ore, the concentrate, the tailings and the key intermediate products, and an MLA report is formed; s4, according to the MLA report and the analysis result obtained in the step S2, comprehensive analysis is conducted on the grinding and floating process of the selected plant, and a process examination conclusion is obtained; and S5, determining a process improvement direction and suggestions according to a process examination conclusion. According to the method, MLA analysis is carried out on key products of process examination, systematic analys