Technological Mineralogical Characteristics and Beneficiation Test of A High-Fe Copper Mine

In order to find out the influence of ore properties on beneficiation indexes, optical microscope, electron probe, phase analysis, and chemical multi-element analysis were used to study the mineral composition, main mineral embedding characteristics and occurrence state of main elements minerals of a copper sulfide ore abroad. The mineralogical characteristics results show that the main target elements in the ore are Cu a·nd S, the grade is 0.78% and 11.12%, respectively, the associated element silver grade is 7.5 g/t, and copper mainly occurs in chalcopyrite, chalcocite and covellite; S is mainly occurs in pyrite and chalcopyrite. Some copper and sulfur-containing minerals have fine particle size, which are embedded in the pores of gangue minerals or wrapped in gangue minerals, affecting the separation and recovery of copper and sulfur. According to the mineralogical characteristics, the beneficiation process of "mixed flotation-copper-sulfur coarse concentrate regrind-copper-sulfur separation" is adopted, and the final copper concentrate Cu grade is 20.61%, and the Cu recovery rate is 72.63%; Ag was enriched in copper concentrate with the content of 143.90 g/t and the recovery rate of 77.96%; the sulfur concentrate S grade is 32.19%, S recovery rate is 91.41%.