Apparatus and process for the conditioning of granules, powders and/or liquids, including: a hopper for containing the granules, powders and/or liquids equipped, on an external surface thereof, with at least one manifold defining a respective duct in fluid communication with the inside of said hopper; at least one blower member associated with said duct for delivering a flow of mixing gas or other gaseous mixing means of the granules, powders and/or liquids inside the hopper; and a first member for conditioning the flow of mixing gas arranged upstream of said blower member to adjust at least the pressure and/or humidity and/or temperature values and/or to supply the flow with an additive in a liquid or gaseous or vaporous form.