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, Issue 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

1. Nadutyi V.P., Ziborov K.A. and Loginova A.A. IGTM NAS of  Ukraine (2017), Udarno-vidtsentrovyi dezintegrator [Shock-centrifugal disintegrator], Dnipropetrovsk, UA, Pat. № 116387 UA.

2. Nadutyi V.P., Loginova A.A. and Sukharev V.V., IGTM NAS of  Ukraine (2017), Udarno-vidtsentrovyi dezintegrator [Shock-centrifugal disintegrator], Dnipropetrovsk, UA, Pat. № 119892 UA.

 

3. Nadutyi V.P., Dzhamil Khaddad, Sufharev V.V., Loginova A.A. The results of experimental studies of influence of variable parameters on the performance indicators of shock-centrifugal disintegrator // Науковий вісник НГУ. Дніпро. 2019. Вип. 1. С. 43–48

https://doi.org/10.29202/nvngu/2019-1/3

4. Voloshyn, O., Riabtsev O.  Some important aspects of rock mechanics and geomechanics. E3S Web of Conferences 109, 00114 (2019). Essays of Mining Science and Practice

https://doi.org/10.1051/e3sconf/201910900114

5. Fedoskina, O., Fedoskin, V., Loginova, A.  The issue of loading the material in a vibro-impact grinder.  E3S Web of Conferences 109, 00024 (2019). Essays of Mining Science and Practice

https://doi.org/10.1051/e3sconf/201910900024

6. Tytov, O., Haddad., J., Sukhariev, V. Modelling of mined rock thin layer disintegration taking into consideration its properties changing during compaction. E3S Web of Conferences 109, 00105 (2019). Essays of Mining Science and Practice

https://doi.org/10.1051/e3sconf/201910900105

7. Loginova, A.A., Ziborov, K.A. and Trubitsin, M.N. (2014), “Analysis of workflow features and structures support unit shock-centrifugal crushers with a vertical shaft working body”, Gornaya elektrome-khanika I avtomatika, GVUZ «NGU», no. 91, pp. 131-137.

8. Hardoon  D.R., Szedmak S. and Shawe-Taylor J. (2004), “2004 Canonical Correlation Analysis: An Overview with Application to Learning Methods”, Massachusetts Institute of Technology, Neural Computation, Volume 16, Issue 12, p. 2639-2664.

https://doi.org/10.1162/0899766042321814

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. .

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