The invention discloses a
copper-sulphur separation and ore
dressing method for high-sulphur
copper ores. The
copper-sulphur separation and ore
dressing method comprises the following steps: crushing,
grinding and grading high-sulphur copper raw ores, feeding a grading overflow to a low-intensity
magnetic separation operation, pre-selecting low-intensity magnetic concentrates, that is, pyrrhotites, and discharging low-intensity magnetic
tailings; feeding the low-intensity magnetic
tailings to a copper flotation operation, obtaining copper concentrates with a Cu grade of greater than 18% and a copper
recovery rate of greater than 85%, and discharging copper flotation
tailings, wherein during the copper flotation operation,
lime is used as a pH
regulator and a
pyrite inhibitor, butyl
xanthate is used as a collector, and No. 2 oil is used as a foamer; and feeding the copper flotation tailings to a flotation sulphur dressing operation to obtain sulphur concentrates, and throwing final tailings. The copper-sulphur separation and ore
dressing method disclosed by the invention has the advantages of being stable in ore dressing indexes, low in medicament consumption, clean and environment-friendly, simple and convenient to operate, easy to operate and manage in the field, and the like; and the pyrrhotites are pre-selected through the low-intensity
magnetic separation, the interference of the pyrrhotites on the copper flotation is eliminated, thus copper flotation indexes are greatly improved, the phenomena of high fluctuations of a copper concentrate grade and a copper
recovery rate are avoided, and energy-saving and consumption-reducing effects are remarkable.