Abstract:High investment, high energy consumption and high cost are features of normal agitation leaching. Therefore, the technology of fine grinding on ore, slurry heating, and pressure filtration of leaching residue were substituted by the technology of classification treatment on ore, utilization of waste heat and clarification and washing with high-efficient thickening, respectively. The results show that the slurry achieves 81.33% -0.074 mm treated by classification, the temperature of slurry increased to 60 ℃ in 50 minutes using industrial waste heat, and the function of concentration, clarification and washing are achieved with the technique of high-efficient thickening. Under these comprehensive energy-saving techniques, the total installed capacity of leaching system was decreased by 33 %, investment by 68.5 %, and the cost by 35.3 %. With the optimization of agitation technique, application range in agitation leaching could be enlarged.