Parameters of hydraulic screening on horisontal screens of gold panning devices
The hydrodynamic analysis of the hydraulic screening for gold panning devices is carried out. The objective of the study in conditions of sand washing based on the hydrodynamic analysis is to justify the basic parameters of hydraulic screening on flat screens, to evaluate the possibility of reducing losses. The parameters of the slurry flow entering the screen are determined: speed, height, width, filling ratio of the gateway. The dependences of the performance (throughput) of the screening on its size are length, width, size of the hole, the angle of inclination. An equation of interdependence of the size of the holes on rock particles size and the speed of flow is found. On the basis of the largest grain of rocks particle size of gold exported from the undersize was defined, to determine the loss of gold at hydraulic screening. It is shown that the direction of oversize product for further enrichment of the locks has allowed reductions in the loss of gold.