Exploring the effect of a polyacrylic acid-based grinding aid on magnetite-quartz flotation separation

It is well documented that the use of grinding aids (GAs) can reduce milling energy consumption. However, impact GAs on downstream processes must be addressed in view complex such as froth flotation separation. This study investigates effects polyacrylic-based (Zalta™ GR20-587: AAG) performance and quartz from magnetite. Various AAG dosages conditions were examined. The results showed lower consumption a finer, more uniform product size with roughened surfaces for compared to without aid. Flotation tests single pure minerals enhanced collection minimal effect Mixed mineral by using AAG, Fe recovery 92.1 % 64.5 grade could achieved collector dosage 100 g/t 200 absence AAG. Zeta potentials stability measurements shifts potential, thus improving dispersion suspension. Adsorption illustrated adsorbed both magnetite, former having higher capacity. FTIR indicated physisorption interaction between minerals. Therefore, presence not only improved efficiency but potentially decrease amount required achieve comparable metallurgical performance.