The blending of the vertical blender’s slow turning screw is far gentler than that of a horizontal blender. The blending screw orbits a conical vessel wall while it turns and gently lifts material upward. The materials are then thrust at the upper most batch level towards the center of the vessel, and then move slowly back down the center, while mixing with materials being moved upward by the orbiting screw.
Products that require low-impact blending are indeed best handled in a vertical blender. In addition, a vertical blender is more versatile with batch ranges as they can accept a capacity range that varies from 25% of capacity to full, vs a horizontal needs to be filled to a min. of 75% capacity.