| With the rapid and sustained development of national economy, the demands of mineral material and nonferrous-metal with high quality is ncreasing. But mineral resources is nonrenewable resources, copper resource is limited resources for China. Realize the comprehensive utilization of mineral resources and guarantee sustained development of national economy is one of the flotation-technology problems at present. The potential controlled flotation technology with high selectivity and low floating agent consumption will be a main development direction in mineral processing field.In the concentrator handling ore of Daye Iron Ore of WISCO, the main ore minerals are chalcopyrite and pyrite, and its mechanical characters are very complicated. There are three main products in Daye Mineral Processing Plants. There are many effects which impair the technical targets of copper-beneficiation in copper-sulfur-iron production, as the rough grain is lack of grinding, the fine grain is excessive of grinding, the ore character is complex and variable, the regime of agent is unreasonable etc. All of these affecting factors cause a low copper-grade and low copper-recovery that the valuable element can't be full utilization. This paper takes a investigated in detail with the primary regime of agent and process flow, and base on the analytic study such as the mineralogical composition of green ore, the imbedding connection of associated mineral, the main mineral configuration and other process mineralogy character. For the purpose of increasing the copper grade and copper recovery rate, this paper carry through the research of flotation-electrochemistry and potential-controlled flotation of sulfide minerals.By the electrochemical flotation standards, with the experiment research on grinding fineness, pulp pH, pulp potential and usage and dosage of modifiers, collectors and frothers in laboratory. The conditions with the mixed flotation and separated flotation...
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