A cooling arrangement adapted to be used in a process of preparing a fine powder, and a method for using same are described. The cooling arrangement (100) comprises: a solid particles feed ingress means, a solid particles mixing means (140), a plurality of cooling air discharging devices (130) and a solid particles egress means. The cooling arrangement is characterized in that the averaged diameter of the solid particles fed the said solid particles ingress means is essentially less than 6 mm. Preferably, the solid particles are fed to the cooling arrangement and free fall (120) onto the bottom section thereof.