Abstract <p>Drive power of rotary toothed crushers with nonlinear arrangement of star teeth on the rotor used for crushing the sinter cake is substantiated using the methods for determining the crushing forces and the moment of resistance on the shaft, as well as the results of an experimental study of the process of destruction of iron ore sinter under various types of deformation. As a result of laboratory studies to determine the conditions of sinter destruction by various types of deformation, the sinter ultimate strength values for uniaxial compression and tension under bending in the cold and hot state were obtained. It was found that the ultimate compressive strength for the cooled agglomerate is 3.0 times, and for the agglomerate in the hot state it is 3.4&#xa0;times greater than the ultimate tensile strength under bending, which confirms its strength anisotropy. The analytical justification for the reduction of the required drive power of crushers with chevron rotors by 3.5–4.6 times compared to similar conditions of the agglomerate crushing process in crushers with a linear arrangement of teeth is provided. The adequacy of the method for determining the crushing forces, the moment of resistance and the drive power of a crusher with a nonlinear type of rotors is experimentally confirmed under production conditions: the relative error in the results of determining the moment of resistance did not exceed 14.0%. Using the proposed method, the reduction of the required drive electric motor power of DO-1300-2700-61 crusher used in the agglomeration shop conditions of the Alchevsk Metallurgical Plant, Yuzhny Mining and Metallurgical Complex LLC, by 1.5–1.8 times is justified.</p>