The development of technological solutions on mining and processing brown coal to improve its quality

Babets, Ye.K.; Bielov, Oleksandr; Шустов, Олександр Олександрович; Barna, Tomislav; Адамчук, Андрій Андрійович

doi:10.29202/nvngu/2019-6/6

Cited by 12 publications

(20 citation statements)

References 8 publications

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“…Issues of dump formation have been considered in various scientific papers [1][2][3][4][5][6][7][8]. The volume of the overburden rocks extraction of and their storage in the external dump directly depends on the productivity of the open mine where minerals are extracted [9][10][11][12][13][14][15][16][17]. The placement of overburden rocks and the productivity of open mine equipment is an important task that affects the sequence of dump development and the stability of slopes.…”

Section: Analysis Of Studiesmentioning

confidence: 99%

Determination of economically viable option of liquidation the consequences of external dump deformation

et al. 2021

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The safety factors for different variants of operation development were obtained, on the basis of which the technical and economic indicators were established and the most expedient way of restoration of dump operations in conditions of the formed landslide was chosen. The solutions were proposed for the external dump No 2 of the Central Ore Mining and Processing Enterprise (COMPE), that allow to continue its future operation. When working in the conditions of the formed landslide, three variants of the further dump operation are modeled: the first one - with landslide removal and unloading of the upper dump horizons, the second one - without landslide removal and involvement of disturbed lands in land allotment, the third one - with the landslide loading. Based on the built sections of the dump and defined physical and mechanical properties, the stability factors were obtained for different options of the operation development, which made it possible to determine the appropriate option to eliminate the effects of the dump slide deformations. As a result of the calculations, the cost flows for each of the proposed options of the formation of the end contour of the dump No 2 are determined.

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Section: Analysis Of Studiesmentioning

confidence: 99%

Determination of economically viable option of liquidation the consequences of external dump deformation

et al. 2021

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“…This approach to the choice of a dragline excavator for the formation of a singletier internal dump can be adopted in de [14,15], quarries for the development of ilmenite deposits [16], as well as during filling the minedout space of open pits for min ing of construction raw materials [17,18]. calculation of stability parameters.…”

Section: Fig 1 Scheme Of Forming Cracks On the Northern Side Of Thementioning

confidence: 99%

Determining conditions of using draglines in single-tier internal dump formation

Babets¹,

Адамчук²,

Шустов³

et al. 2020

Nauk. visn. nat. hirn. univ.

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“…So, it is becoming necessary to determine the further use of fossil fuels in Ukraine, which would not cause a negative impact on the climate. To solve this task, it is advisable to analyze the available deposits of fossil fuels, as well as innovative technologies for their use [4,5]. This publication is devoted to the analysis and labeling of the existing brown coal deposits in Ukraine, as one of the most common types of fuel mentioned above.…”

Section: Introductionmentioning

confidence: 99%

“…Method for calculating the gross calorifi c value of coal on a moist ashfree basis. Solid Fuel Chemistry, 52(5), 279-288. https://doi. org/10.3103/S0361521918030023.…”

mentioning

confidence: 99%

Deposits and quality indicators of brown coal in Ukraine

Мірошниченко¹,

Pyshyev²,

Lebedev³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To carry out marking of existing deposits of brown coal in accordance with domestic and international classifications. To give a comparative assessment of the distribution of balance reserves of brown coal in accordance with different classification systems. Methodology. Reserves and quality indicators data for brown coal in Ukraine were taken from the site of the State Research and Production Enterprise State Information Geological Fund of Ukraine and on the basis of our own research. Some quality indicators were calculated according to the formulas given in the periodical scientific literature. Ukraines brown coal reserves were estimated using Ukrainian and international brown coal classifications. Findings. It is confirmed that the balance reserves of brown coal in Ukraine are located in Dnipropetrovsk, Zhytomyr, Zakarpattia, Kirovohrad, Kharkiv and Cherkasy regions and are (thousand tons): categories A + B + C1 2,593,359; category C2 299,181. Among the existing classifications, the most suitable for the brown coal distribution in Ukraine is the International Code System of Brown Coal, which is regulated in ISO 2950:1974 Brown coal and lignites Classification by types on the basis of total moisture content and tar yield. Originality. For the first time, a range of changes in brown coal quality indicators in Ukraine has been established, and its reserves have been marked using Ukrainian (DSTU 3472:2015) and international (ISO 2950:1974; International Classification of Coal in Reservoirs; ISO 11760:2005; ASTM D38812) classifications. Comparative assessment of coal reserves will allow choosing the optimal ways of their processing, depending on the predicted properties of raw materials. Practical value. The reserves of brown coal deposits by regions and the degree of industrial development up to 01.01.2021 have been described, and the production of brown coal from 2011 to 2020 has been shown. Determining the quality of brown coal deposits in Ukraine allows us to develop the most effective methods for using the coal.

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The development of technological solutions on mining and processing brown coal to improve its quality

Cited by 12 publications

References 8 publications

Determination of economically viable option of liquidation the consequences of external dump deformation

Determination of economically viable option of liquidation the consequences of external dump deformation

Determining conditions of using draglines in single-tier internal dump formation

Deposits and quality indicators of brown coal in Ukraine

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