Assessment of conditions and experience of technogenic placer dredging

Abstract The article describes the dredging method used for developing technogenic placers. Quantitative indicators and qualitative characteristics of rocks were described. Positive and negative experience of placer dredging was analyzed; research results were interpreted. The dredging of technogenic placers using multi-unit dredges was described in terms of specific conditions and parameters. Observation results reflecting changes in dredging parameters, equipment utilization coefficients and uneven operation of dredges were analyzed. Recommendations on dredging efficiency improvement, including the use of controlled dredging, were given. Controlled dredging will help change parameters of chip removed by dippers. Directions of placer dredging involving improvement of existing technical solutions, justification of rational parameters of technological schemes and development of mass conversion technologies were substantiated.