Abstract
The use of chemical additives for improving the efficiency of both wet and dry comminution is reviewed. Although such additives can affect breakage strength under general comminution conditions crack velocities are probably too great to involve adsorption effects. Additives in dry grinding systems appear to function by coating the particles and preventing reagglomeration. In wet grinding systems, their main influence on grinding is through their effect on slurry rheology. Such additives do not affect the specific energy for grinding but only regulate mill power draft and kinetics.
