The acceleration of ions and the formation of ion conics in the suprauroral region is studied using a model which includes the effects of wave-particle interaction, the inhomogeneous geomagnetic field, and field-aligned potential drops. Particle acceleration by interaction with turbulence is treated as a random process in a simplified way using a Monte Carlo technique. Applying the mode to ion acceleration by lower-hybrid turbulence between 1000 and 5000 km, we find that the observed amplitudes of the waves are sufficient to accelerate ions to the energies often found in conics.