Abstract: A coppersulfur ore containing 0.85% Cu and 15.23% S from Anhui Province was treated by "copper and sulfur isoflotationmiddling regrindingcopper and sulfur separation" process,of which the production index was not good enough.In order to improve the production index,tests of three different technologies,"copper and sulfur bulk flotationrough concentrate regrindingcopper and sulfur separation" process,"copper and sulfur bulk flotationmiddling regrindingcopper and sulfur separation" and "copper and sulfur bulk flotationmiddling regrindingcopper flotationsulfur flotation" were carried out,of which the tests indexes,reagent cost,stability and plant transformation were compared and analyzed.Results showed that the "copper and sulfur bulk flotationmiddling regrindingcopper flotationsulfur flotation" process was recommended.

Key words: Coppersulfur ore, Chalcopyrite, Marcasite, Technology process, Multiplans comparison