On flotation of silver from acid cakes of zinc production
The authors researched the causes of instability of technological parameters in the flotation of silver from acid cakes from zinc production. Experimentally, using the methods of spectroscopy, it is shown that one of the main factors determining the flotation results is elemental sulphur which is not associated with the crystal lattice of minerals and indiscriminately seating on their surface during the firing process of zinc concentrates. Removal of S <sup>0</sup> from the surface of mineral particles enhances the silver content in the flotation concentrates. Level of extraction of silver depends on elemental sulphur associated with the lattice of the glandular sphalerite formed during leaching of zinc concentrates.