Nadutyі V.P., Lohinova A.A., Sukharev V.V. Mathematical modeling of the main technological parameters of the two-rotor shock-centrifugal disintegrator on the basis of correlation analysis

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Parent Category: Geo-Technical Mechanics, 2019

Category: Geo-Technical Mechanics, 2019, Issue 146

Geoteh. meh. 2019, 146, 99-106

https://doi.org/10.1051/e3sconf/201910900060

Mathematical modeling of the main technological parameters of the two-rotor shock-centrifugal disintegrator on the basis of correlation analysis

¹Nadutyі V.P., ¹Lohinova A.О., ¹Sukharev V.V.

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine

UDC 622.73:621.926                                        

Language: English

Abstract.

The article technological disintegration indicators (productivity and power consumption) were determined and their generalized multiple regression variability depending on the regime and structural parameters of the shock-centrifugal disintegrator and the parameters of the output product were obtained. Economic and technological advantages of using the two-rotation kinematic scheme of a shock-centrifugal disintegrator, which implements the destruction of the material mainly by shock shifts due to the combined action of the kinetic energy of the interconnected flows, were justified. The research was carried out using such types of rocks: granite, tuff, limestone, basalt. As variable parameters (so-called indicated factors) were used the following: number of rotors х₁– one or two rotors, the initial size of the material х₂: -10+7 ÷ -5+2.5 mm, durability of the material х₃: 35 ÷ 230 kg/mm², number of revolutions of the shaft of the disintegrator х₄: 2800 – 4760 rpm. The nature of the dependencies was determined by comparing the corresponding values of the reliability of different types of approximation. According to the gradation of the correlate on coefficients of the investigated indicated factors, the closest relationship is observed between the number of revolutions of the disintegrator shaft х₄ and power consumption. The increase in the number of revolutions of the disintegrator shaft in 1 % causes a power consumption increase in 1.37 %. The following factors in the tightness of connection are the initial material size х₂, the growth of the initial material size by 1 % causes an increase of power consumption by 0.7 %; the strength of the material х₃, the increase in the strength of the initial material by 1 % causes an increase of power consumption by 0.24 %; the number of rotors х₁, increase in the number of rotors from 1 to 2 causes an increase of power consumption by 15 %. Thus, it is obvious that an increase in the number of rotors leads to a significant increase in the disintegration productivity with a minimum increase in power consumption. The given equations are the most representative and acceptable for disintegrators of the same size (or approximate ones), as the investigated laboratory stand. For disintegrators of other sizes, additional research is needed to specify the coefficients in the obtained equations.

Keywords: disintegrator, destruction, impact, shear, rock mass, correlation analysis.

REFERENCES

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Nadutyi Volodymyr Petrovych, Doctor of Technical Sciences (D.Sc.), Professor, Head of the Department of Mechanics of Machines and Processes of Mineral Processes, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sukhariev 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. Poljakov of National Academy of  Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it.

Lohinova Anastasiia 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. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it.

 

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