The invention discloses a low alkali
sulfur acid free floatation technology for high
sulfur lead zinc ores, and belongs to the technical field of ore
processing.
Sulfur concentrate (
pyrite) is obtained after lead-
sulfur mixing-floating and lead-sulfur separation.
Sulfur acid is not used, the environmental
pollution caused by
sulfuric acid is avoided, the
wastewater processing cost is reduced; at the same time, the steps for storing, transporting, and using
sulfuric acid are all eliminated, the production and management difficulty is reduced; in lead-sulfur separation,
lime, BP, and BH are usedas an inhibitor for
pyrite, the novel medicaments (BP, BH) have a good separation effect; the
alkalinity of the mineral
slurry is low, the using amount of
lime is reduced; and solved are problems that the
alkalinity of mineral
slurry is high, the foams are viscous, the entrainment of
gangue is severe, and the comprehensive
recovery rate of precious metals such as silver, gold, and the like, is low.