Method for determining solid waste screening pore size

The invention relates to the technical field of mineral separation, in particular to a method for determining the size of a solid waste screening aperture, which comprises the following steps of: firstly, uniformly spreading component particles to be detected on a slope carrying sheet, and identifying and counting by using an identification program in combination with super field depth analysis to obtain the number of component particles with different colors; the method comprises the following steps: calculating the proportion of component particles with different colors and the proportion of mixed component particles according to a formula, finally performing fitting analysis on an accumulated value of the proportion of the mixed component particles of each size fraction and the total particle number by using drawing software to obtain a convergence value, and determining the particle size conforming to a convergence limit value, thereby providing a theoretical basis for subsequent selection of the pore dia