Abstract:During the 1 mm dry screening process of fine-grained minerals，the screening efficiency is severely compromised by strong microscopic solid-liquid phase adhesion within the mineral system，significant mesoscopic particle agglomeration effects，and low macroscopic particle bed permeability. These limitations hinder the large-scale， high-quality processing of mineral resources. To address these issues，this study proposes a highly elastic screening method. Utilizing vibration testing analysis and coupled simulation methods，the kinematic characteristics of the highly elastic screen surface were investigated. The influence of excitation parameters on screen surface acceleration was analyzed，and the particle bed loosening and permeability distribution characteristics during highly elastic screening were clarified. Combining screening experiments with Response Surface Methodology （RSM） analysis， the effects of excitation force，excitation frequency，excitation direction angle，and screen surface inclination angle on the 1 mm screening efficiency were explored. The synergistic mechanism of key parameters in the highly elastic screening process was elucidated. The significance gradient of parameter influence was determined as：Excitation frequency>Excitation force>Screen surface inclination angle>Excitation direction angle. A regression mathematical model correlating screening efficiency with the aforementioned parameters was established. The model predicted an optimal 1 mm screening efficiency of 83. 46% under the following conditions：excitation force of 8. 51 kN， excitation frequency of 14. 12 Hz，excitation direction angle of 49. 97°，and screen surface inclination angle of 1. 95°.The research would provide theoretical and technical support for the development of 1 mm dry screening technology.