Study on separation technology for copper-molybdenum collective concentrate

Copper-molybdenum collective concentrate, which contains Cu 26.35 per cent and Mo 2.73 per cent, adopts the following principle process flow and gets a better respective flotation index. The process flow includes three steps, heating pretreatment, separating Copper with Molybdenum after grinding, finally regrinding concentration. The final index is that the operation rate of molybdenum concentration is 4.23 per cent, molybdenum content is 55.22 per cent, operation recovery rate of molybdenum is 85.61 per cent, copper content is 0.45 per cent; the operation rate of copper concentration is 95.77 per cent, copper content is 27.49 per cent, molybdenum content is 0.41 per cent, operation recovery rate of copper is 99.93 per cent. Experiments show that pretreatment process, regrinding stages and fineness and dosage of Na2S are the main factors that effect separation of copper and Molybdenum. Regrinding in the second stage is important for obtaining high-quality molybdenum and copper concentrate.