Abstract:In order to achieve stable control of filling slurry quality concentration based on electrical signal feedback, a study was conducted on the characterization of filling quality concentration based on electrical signals during the stirring process. Experiments on the mixing characteristics of full tailings filling slurry with different mass concentrations was designed and conducted, collect electrical signal data such as torque, power, current during the mixing process, and the original data was pre-treated to reduce noise using Kalman filtering method. The experimental result shows that the three types of mixing electrical signals present a significant positive correlation with the change of full tailings filling slurry mass concentration. When the slurry mass concentration increases from 68% to 76%, the values of torque, power, and current signals increase by 22%, 29%, and 20%, respectively, For every 1% increasing, the values of the three electrical signals show significant differences; Based on this, a study was conducted on the evolution law of stirring electrical signals with the mass concentration of slurry, revealing the inherent relationship between the mass concentration of filler slurry and stirring electrical signals, the sudden and continuous characteristics of stirring electrical signals near the critical concentration of slurry were discovered, and a related model of stirring electrical signals and slurry mass concentration was proposed and was analyzed and studied in depth, finally, the characterization method, model, and parameters of filler slurry concentration based on stirring process electrical signals were clarified, laying the foundation for achieving stable control technology of filler slurry mass concentration through electrical signal feedback during the stirring process.
