Nadutyi V.P., Jamil Haddad, Sukhariev V.V, Loginova A.A. Investigation results of shock-centrifugal disintegrator performance
- Details
- Parent Category: Geo-Technical Mechanics, 2020
- Category: Geo-Technical Mechanics, 2020, № 150
Geoteh. meh. 2020, 150, 64-73
https://doi.org/10.15407/geotm2020.150.064
Investigation results of shock-centrifugal disintegrator performance
1Nadutyi V.P., 2Jamil Haddad, 1Sukhariev V.V, 1Loginova A.A.
1Institute of Geotechnical Mechanics named by N. Poliakov NAS of Ukraine, 2 Al-Balqa Applied University, Amman, Jordan
UDC 622.73:621.926
Language: Russian
Annotation.
The shock-centrifugal type of grinding equipment is widely used in ore mining and processing, metallurgical and building industries. This paper presents a correlation-regression analysis of the influence of the shock-centrifugal disintegrator (SCD) parameters and characteristics of the crushed rock mass on the SCD performance. For the approximation of the experimental data, the least-squares method was used, in which performance of the SCD was the effective feature, and the factor attributes were the number of rotors, size of the starting material, strength of the starting material, and speed of the rotor shaft rotations. As a result of the analysis based on the experimental data, the multiple regression equation was constructed, which determines the SCD performance depending on cumulative change in all factor characteristics, as well as the net regression equations, which determine change in the SCD performance depending on each factor individually; this allowed to establish efficiency of using of this design of the SCD. According to the coefficient gradation of the obtained regression, an increase in the number of rotors from 1 to 2 causes twice increase of productivity (100%); with increase in particle size of the starting material by 1% productivity decreases by 0.75%; with increase in the strength of the starting material by 1% productivity decreases by 0.6%; with increase in the number of shaft rotations by 1% productivity increases by 0.31%. Based on the obtained pair correlation coefficients, the closest correlation of the parameters is observed between the SCD productivity and the number of rotors; they are followed by the strength of the starting material, rotational speed of the rotor shaft and the size of the starting material, respectively. The use of the new two-rotary kinematic scheme of the SCD gives twice increase of the SCD performance in comparison with a single-rotary SCD; this is achieved by formation of a new disintegration zone, where material is destructed mainly under the action of shear loads.
Keywords:
disintegrator, destruction, impact, shear, rock mass, productivity.
References
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About the authors
Nadutyi Volodymyr Petrovych, Doctor of Technical Sciences (D.Sc.), Professor, Head of Department of Mechanics of Machines and Processes of Mineral Processes, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .
Jamil Haddad, Doctor of Technical Sciences (D.Sc.), Associate Professor, Department of Mechanical Engineering, Al-Balqa Applied University, Amman, Jordan, This email address is being protected from spambots. You need JavaScript enabled to view it. .
Sukharev Vitalii Vitaliiovych, Candidate of Technical Sciences (Ph.D), Senior Researcher of Department of Mechanics of Mineral Processing Machines and Processes, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .
Loginova Anastasiya Oleksandrivna, Candidate of Technical Sciences (Ph.D), Researcher of Department of Mechanics of Mineral Processing Machines and Processes, Institute of Geotechnical Mechanics named by N. Poliakov of National Academy of Science of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .