An analysis of methods and equipment for fine material grinding was conducted, confirming the effectiveness of free impact and high-speed impact grinders. A novel inverted impact grinder with an innovative operating scheme is proposed, enhancing energy input and improving particle size classification. A simplified mechanical-mathematical model is introduced, enabling numerical determination of particle stress, grinding thresholds, impact velocity, force, and other key parameters. An engineering methodology is developed for calculating the required number of impacts and grinding time to reach the target particle size, predicting size changes, and regulating process parameters. Refined theoretical dependencies and graphical models support the determination of optimal operating conditions. The proposed model allows for estimating the operational performance of the grinder and selecting rational working parameters for the new grinder. Comparative experimental studies confirm the grinder’s operability, advantages, and increased efficiency. The findings show that the new operating scheme enhances performance and expands grinding capabilities. The system enables controlled particle disintegration, reducing energy consumption while producing finer particle sizes. The novel design and working principles present considerable potential for further development and optimization, potentially enabling ultrafine material grinding. The study establishes a foundation for future research on fine and ultrafine grinding, exploring new possibilities for cost-effective industrial applications.

The article presents the process effectiveness evaluation of the throwing snow mass from the face into the operating area of the snowplow rotor-thrower by a milling feeder, when using a paddle type intensifier. During the operation of the milling-rotor snowplow, an operational problem sometimes arises, arising from an incorrectly set slope (angle of elevation) of the helical line of the milling feeder, due to which snow is thrown forward by it along the snowplow, forming an additional amount of snow for processing, which increases the overall energy costs for the development of snow and the movement of the machine in the snow massif and at the same time reduces the performance of the snowplow [1, 2]. The area of rational values of the design and operating parameters of the milling feeder and the bladed intensifier of the snowplow has been calculated. The process of efficiency increase of the milling-rotary snowplow (MRS) and its performance by adjusting the helix angle a and installing a bladed intensifier reducing the power of the working process will make it possible to perform work on clearing snow and ice formations using reduced number of machines, moreover in much less time. A more massive supply of snow mass to the blades of the rotorthrower due to the use of an intensifier will lead to a decrease in the total energy costs for the snowplow working process. Therefore, by increase the working equipment efficiency of a Mrs with the energy intensity decrease of snow development by selecting rational parameters for its design and workflow is the simplest and most effective way to rationally organize the workflow and improve machines of this type of snowplow.