Dependency of Specific Energy of Rock Cutting on Specific Drilling Energy

Antoljak, Davor; Kuhinek, Dalibor; Korman, Tomislav; Kujundžić, Trpimir

doi:10.17794/rgn.2018.3.3

Cited by 11 publications

(9 citation statements)

References 5 publications

(10 reference statements)

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“…Comparison of the results of the formulas (60) made for the frequency of 30 Hz with the results of experimental laboratory studies shows a satisfactory coincidence of the results of the calculations and experiments in the area q = 0,015 m 3 /h (Figs. 4,5). Thus, in the volume flow rate range from 0,014 to 0,025 m 3 /h, the relative error of calculations does not exceed 10%.…”

Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 74%

“…Figure 1 shows a diagram of one of the largest amber fields in Ukraine. Thus, today, amber production requires new technologies and the development of means to intensify the extraction process, which achieves high productivity and efficiency, and also reduces the negative environmental impact on the environment [3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…From studies [4][5][6][7][8] it is known that the movement of sand in a vibrating fluid bed is not subject to the law of motion of particles in airless space. In addition to gravity, the trajectory of movement of the sand layer is significantly influenced by the parameters of the environment.…”

Section: Introductionmentioning

confidence: 99%

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Identification of the process of hydromechanical extraction of amber

et al. 2020

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The article deals with the method of hydromechanical extraction of amber from sand deposits. The essence of hydromechanical method of amber extraction is considered. The process of extraction has been identified. The analytical expressions obtained for calculating the parameters of hydromechanical extraction of amber from sand deposits, and in particular the expression for determining the rate of emergence of an amber particle, can be used in the further engineering calculations of process parameters and process equipment. These expressions will allow to accurately substitute and with sufficient accuracy to calculate the parameters of the process of extracting amber from amber-containing deposits, as well as to set the parameters of technological equipment for the implementation of this process. MethodsThe northern regions of the Rivne region are characterized mainly by the occurrence of amber in sandy soils, characterized by water and air pores present

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Section: Analysis Of Models Of Motion Of An Amber Particle Under Hydrmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

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Identification of the process of hydromechanical extraction of amber

et al. 2020

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“…To model the process of softening of tuff-stone, it is of considerable interest to determine the analytical type of dependence on which the dehydration process takes place. Sample № 7 was taken for the study as the most characteristic for dump tuff-stone [15][16][17]. The analytical dependence of the species was established, and it is assumed that this dependence reduces the mass of the sample over time during dehydration.…”

Section: Methodsmentioning

confidence: 99%

Research of the properties of quarry tuff-stone for complex processing

et al. 2021

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This article focuses on the complex processing of quarry tuffs-stone to extract metals (iron, titanium, copper, silver, etc.) and obtain raw materials for construction and agriculture. The issue of tuff-stone softening was investigated and the analytical dependence of the regularity of tuff-stone softening at water saturation was established, which indicates that the saturation increases with increasing mass of the sample according to the logarithmic law, and the dehydration process occurs according to the parabolic law. Also in the course of researches the magnetic susceptibility of tuff-stone was defined, which depends on size of induction of a magnetic field. The magnetically sensitive part is up to 50% by weight of the sample, and the remaining silicate part at a magnetic field strength of 1.3 Tesla. Spectral analysis showed a high content of metals in the magnetically sensitive part of tuff-stone, which consists of iron (35-40%), titanium (2.5-4.0%) and copper in the silicate part (0.4-0.7%). It was found that the percentage of content representing commercial interest, and therefore it is appropriate complex processing.

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“…Mining industry is one of the largest energy consumers (Mikaeil, Sohrabian, & Ataei, 2018;Antoljak, Kuhinek, Korman, & Kujundžić, 2018); its share of greenhouse gas emission is rather significant (Kovalenko, 2019). In its turn, processes of concentration at mining enterprises require considerable energy consumption; the energy may be either generated on site or supplied from the power networks (Beshta, 2012;Jain, Cui, & Domen, 2016).…”

Section: Introductionmentioning

confidence: 99%

Survey of the world practice of implementing energy-efficient technologies in terms of mining enterprises

Гончаренко¹,

Ryzhakova²,

Sedova³

et al. 2019

Min. miner. depos.

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Purpose is the analysis of world practice of applying the best available techniques to increase energy saving and energy efficiency of mining enterprises being the important factor of the economic development. Methods. The research methodology is based on the scientific approaches: historical-evolutionary, interdisciplinary, integration, process, and situational. Methods of retrospective, categorical, and system analysis as well as modeling have been applied. The analysis was performed on the basis of both initial information sources (original texts of legislative documents, strategies) and material of the international analytical organizations (International Energy Agency, World Bank) as well as the data of official statistical records. Findings. For the first time, different variants of the best available techniques in Japan, the USA, and the EU have been analyzed as well as the role of a state in applying institutional measures of energy efficiency support, including mining complex, and prospects of its use in the Russian Federation. It has been determined that energy efficiency is the effective and economically feasible tool in reaching sustainable development of the national economy. It has been demonstrated that energy saving and increased energy efficiency may reduce the needs in investment, raise industrial competitiveness and consumer welfare as well as improve environmental protection owing to the reduced greenhouse gas emissions and decreased air pollution. Energy efficiency growth has direct effect upon the industrial competitiveness; it can be achieved by means of innovations. Originality. Emphasis has been put on the key scientific and technical aspects and approaches stimulating increased energy efficiency in the developed countries under the effect of strong, coordinated, and consistent national policy in different sectors of economy. Practical implications. The carried-out analysis is useful in terms of the innovative and technological development of different industries of the Russian Federation in the context of its complicated cooperation with European countries and the USA, dependence on foreign technologies, and limited access to them.

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Dependency of Specific Energy of Rock Cutting on Specific Drilling Energy

Cited by 11 publications

References 5 publications

Identification of the process of hydromechanical extraction of amber

Identification of the process of hydromechanical extraction of amber

Research of the properties of quarry tuff-stone for complex processing

Survey of the world practice of implementing energy-efficient technologies in terms of mining enterprises

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