water content () for estimating the optimum water content ( ) was individually defined 𝑊 torque 𝑊 exp opt for the types I and II. The was well correlated with the , regardless of the type and 𝑊 torque 𝑊 exp opt blending ratio of the original ore powders and quicklime. Finally, the optimum water content was estimated using the . The estimated water content was confirmed to be in good agreement 𝑊 torque with the experimental results, demonstrating that the optimum water content for the wet granulation of fine ore powder with quicklime can be determined using agitation torque.