Static height (H0) is a key parameter in spouted bed as it is dictated by the amount of solids. Knowledge of minimum spouting velocity (ums) is a pre-requisite for optimal spouting condition for the loaded bed. Although a linear variation of ums with H0 has been reported, this is not strictly true. Runs were performed using particles having a wide range of densities (2500–16000 kg/m3) and sizes (570–2440 μm). ums was measured for a wide range of H0 values from those in the conical zone to those having a double height in the upper cylindrical one. Expressing ums ∝ H0α, with α being the exponent of the bed height, this exponent has a high dependency (∼0.5–2.0) on the particle features, and therefore on the bed regime. This will help to rightfully choose the value of α for a given set of particles processed in conical spouted beds with different H0.