The Optimisation of Technological Parameters of Centrifugal Impact Crushers for Grain Grinding

Natalya Kamysheva; Ayap Kurmanov; Vladimir Sapa; Serik Akhanov

doi:10.37385/jaets.v7i2.10302

Authors

Natalya Kamysheva A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0002-0231-7082 (unauthenticated)
Ayap Kurmanov A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0002-2047-3281 (unauthenticated)
Vladimir Sapa A. Baitursynuly Kostanay Regional University https://orcid.org/0000-0001-5119-1853 (unauthenticated)
Serik Akhanov Kyzylorda University named after Korkyt Ata https://orcid.org/0000-0003-1422-2096 (unauthenticated)

DOI:

https://doi.org/10.37385/jaets.v7i2.10302

Keywords:

Centrifugal-Impact Crushers, Grain Grinding, Energy Efficiency, Impact Angle, Involute Profile

Abstract

This study aims to increase the energy efficiency and product uniformity of centrifugal impact crushers for feed grain processing through targeted optimisation of technological parameters. A direct-impact mechanism was implemented by profiling the stationary impact lining with an involute tooth geometry that ensures grain collisions at a 90° angle, minimising kinetic energy losses. Experimental tests were conducted on pea grain (moisture 11.6%) using a prototype crusher developed at Kostanay Regional University. Rotor speed was set at 2000 rpm, throughput maintained at 400 kg/h. The optimised crusher achieved a specific energy consumption of 2.89 kWh/t, which is 22% lower than a conventional impact crusher of similar capacity. The crushed product had an arithmetic mean particle size of 1.31 mm with 85% of particles within the 0.5-1.5 mm range, meeting zootechnical standards. Theoretically, this work refines comminution models by quantifying the effect of impact angle on breakage efficiency and provides a design criterion (involute profile with 47°-56° contact angles) for normal-impact crushers. Practically, the prototype offers a low-energy, high-uniformity solution suitable for feed mills and can be retrofitted into existing machines. The main contribution is the experimental validation that deliberate alignment of impact geometry reduces specific energy by over one-fifth without sacrificing throughput or quality, opening a new direction for energy-efficient grinder design.

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Author Biographies

Natalya Kamysheva, A. Baitursynuly Kostanay Regional University

Natalya Kamysheva is a researcher and lecturer in the Department of Mechanical Engineering at A. Baitursynuly Kostanay Regional University, Republic of Kazakhstan. She is PhD student. Her research focuses on the design, optimization, and performance analysis of agricultural processing machinery, particularly centrifugal-impact crushers and grain destruction mechanisms. With a strong background in mechanical engineering and technological innovation, she has contributed to several patents and publications aimed at enhancing the energy efficiency and operational reliability of feed milling equipment.
Ayap Kurmanov, A. Baitursynuly Kostanay Regional University

Ayap Kurmanov serves as a leading expert and academic in the Department of Mechanical Engineering at A. Baitursynuly Kostanay Regional University. Doctor of Technical sciences, Professor. With extensive experience in the field of agricultural machinery design, he specializes in centrifugal and impact-based grinding systems. Kurmanov is a co-inventor of several patented crusher designs, including innovative pea grain crushers with internal impact rings and disk-type centrifugal crushers. His research emphasizes reducing energy consumption, improving particle size uniformity, and adapting machinery for diverse grain conditions. He has played a pivotal role in guiding experimental prototypes and techno-economic assessments, bridging academic research with industrial application. Kurmanov is also dedicated to mentoring students and contributing to regional agricultural development through engineering innovations that support efficient feed production.
Vladimir Sapa, A. Baitursynuly Kostanay Regional University

Vladimir Sapa is a researcher and engineer affiliated with the Department of Mechanical Engineering at A. Baitursynuly Kostanay Regional University. PhD in Technical sciences, Associate Professor. His expertise lies in the mechanics of grain processing, impact dynamics, and the optimization of crusher parameters. Sapa has been involved in collaborative projects focusing on patent development and experimental testing of centrifugal-impact crushers, contributing to designs that enhance crushing efficiency and durability. His work often involves analyzing kinetic energy transfer, wear patterns, and structural improvements in milling equipment.
Serik Akhanov, Kyzylorda University named after Korkyt Ata

Serik Akhanov is an academic and researcher at the Department of Agrarian Technology, Kyzylorda University named after Korkyt Ata, Republic of Kazakhstan. PhD in Technical Sciences. His research interests encompass agrarian technology, grain processing systems, and the integration of mechanical engineering principles into agricultural practices. Akhanov focuses on optimizing technological parameters for improved efficiency in crop processing, including feed preparation and grain milling. He collaborates with engineering departments to explore interdisciplinary approaches that enhance machine performance under varying agricultural conditions.

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