Effects of Chemical Additives on Rheological Properties of Dry Ground Ore - a Comparative Study

It is well documented that chemical additives (grinding aid “GA”) during grinding can increase mill throughput, reduce water and energy consumption, narrow the particle size distribution of products, improve material flowability. These advantages have been linked to their effects on rheology, although there a gap in understanding GA effectiveness mechanism flow properties. The present study aims fill this using different GAs (Zalta™ GR20-587, Zalta™ VM1122, sodium hydroxide) through batch experiments magnetite ore addressing mechanisms rheology by an FT4 Powder Rheometer as unique system. Experimental results showed improved efficiency (energy consumption product fineness), which were well-correlated with basic energy, specific aerated energy. Moreover, rheometry measurement strong linear correlations between resulting work index when was considered for grinding, confirmed effect ground particles’ polysaccharide-based aid, best performance 38.8% reduction 20.4% 24.6% 38.3% also strongest correlation parameters (r > 0.93). investigation shows indication predominant based alteration rheological properties identify VM1122 GA.