Substantiation of research results on energy efficiency of basalt crushing

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Authors:


Z.R.Malanchuk*, orcid.org/0000-0001-8024-1290, National University of Water and Environmental Engineering, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A.O.Khrystyuk, orcid.org/0000-0002-5009-3140, National University of Water and Environmental Engineering, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S.Ye.Stets, orcid.org/0000-0003-0063-5009, National University of Water and Environmental Engineering, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

V.V.Semeniuk, orcid.org/0000-0002-2348-3143, National University of Water and Environmental Engineering, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

L.O.Malanchuk, orcid.org/0000-0002-6341-5639, Institute of Economics and Management, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.


повний текст / full article



Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2022, (6): 041 - 046

https://doi.org/10.33271/nvngu/2022-6/041



Abstract:



Purpose.
To experimentally determine the main design and operational parameters of the influence of rock mass properties on the Roller Crusher performance when processing basalt rock mass.


Methodology.
The crushing and grinding of basalts are studied by the methods of mathematical statistics in order to identify the results obtained and determine the dependences of technological parameters on the mechanical impact factors. Experimental studies are carried out on the example of basalts from the Rafalivskyi quarry in the Rivne region.


Findings.
It has been revealed that the elemental composition of rocks in the benches of basalt quarries has a different mineral composition. Experimental studies of the rock crushing results have determined the efficiency of using screening for crushing basalts. The experimental dependences of the roller crusher performance in crushing and grinding modes on the properties of the rock mass have been obtained.


Originality.
The value of crushed rock fractal joints has been found, when using cone and centrifugal crushers, which is characterized by the shape factor and fractal dimension D. For cone crusher Kf=2.15.0 and D=1.4. For centrifugal crusher Kf=1.51.8 and D=1.17. These parameters testify to the energy feasibility of using centrifugal crushers. The high value of the multiple correlation coefficients R2 and Fisher criterion F, whose value at a significance level of 0.05 is higher than the critical one, indicates a sufficient convergence between the experimental and theoretical results and the accuracy of the obtained analytical dependences.


Practical value.
The generalized models for determining the Roller Crusher performance, obtained for each rock type, based on significant factors, greatly facilitate the choice of parameters for crushing and grinding processes, and also allow choosing a rational mode of crusher operation.



Keywords:
basalt, puff-stone, crusher, energy efficiency, screening, rock mass, destruction

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