Technological directions of coal enrichment waste processing

Pavlуchenko, A; Haidai, Oleksandr; Firsova, V; Ruskykh, Vladyslav; Tkach, I.

doi:10.33271/crpnmu/62.139

Cited by 3 publications

(5 citation statements)

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“…It should meet the properties of adhesives. The strength of any multiphase system formed due to the adhesion and bonding of an adhesive and a substrate is characterized by adhesion, autogelation, and cohesion [4,37,38].…”

Section: The Choice Of Object To Studymentioning

confidence: 99%

Determination of composite fuel parameters in the operation of technogenic deposits of coal mining enterprises

Haidai,

Ruskykh,

Koveria

et al. 2024

E3S Web Conf.

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The research provides the determining of the parameters for composite fuel in the operation of technogenic deposits at coal mining enterprises. The qualitative characteristics of technogenic raw materials are determined, and the parameters of technological processes to produce composite fuel are established: preparation (screening or grinding), physical and chemical influence on the state of raw materials, mixing, production, and drying (if necessary) to obtain suitable fuel. Based on the particle size distribution (as well as sedimentation analysis for waste fractions up to 50 μm) and chemical composition (with the determination of moisture, volatile matter, ash, and sulphur content) it was found that the physicochemical parameters for each type of industrial waste, when preparing them for use in the production of composite fuels, have been established. A technological classification of technogenic materials has been developed, which makes it possible to systematize technical issues in the implementation of preparation processes, physical and chemical influences, mixing, production, and drying to obtain suitable fuel.

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Section: The Choice Of Object To Studymentioning

confidence: 99%

Determination of composite fuel parameters in the operation of technogenic deposits of coal mining enterprises

Haidai,

Ruskykh,

Koveria

et al. 2024

E3S Web Conf.

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“…More than 250 million tons of such waste have been accumulated with diff erent quality characteristics of all ranges of extracted coal. The issue of producing composite fuel should be solved by substantiating the technological parameters of production processes and investigating raw materials' physical and mechanical characteristics and their mineral and chemical compositions [12]. In addition, the crucial factor for the adhesive-chemical technology is establishing the particle size distribution of sludges and culms as raw materials for the process.…”

mentioning

confidence: 99%

Determination of granulometric composition of technogenic raw materials for producing composite fuel

Haidai¹,

Pavlychenko²,

Koveria³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To determine the granulometric composition of technogenic raw materials for agglomeration by the adhesive-chemical method. This approach allows for determining the optimal particle size distribution for obtaining the prepared agglomerated fuel, which has the form of cylindrical rods with a diameter of 30 mm and a length of 50200 mm. Methodology. The granulometric composition of technogenic raw materials was determined using sieve and sedimentation analyses. 38 representative samples of carbon-containing raw materials were subjected to the investigation. Findings. The sieve analysis results of representative samples of coal sludge and culms are presented; their graphical characteristics is given. Sieve analysis of the granulometric composition of samples of carbon-containing raw materials and sedimentation analysis of solid fuel samples with a fraction of fewer than 50 microns is carried out. It has been established that all samples with sizes of more than 56 mm should be subjected to further grinding. Originality. For the first time, studies and comparative analysis of granulometric compositions of technogenic raw materials have been realized, which allows for a reasonable approach to obtaining composite fuel from carbon-containing wastes by the adhesive-chemical method, using various compositions of components. Practical value. The results can process technogenic raw materials to get agglomerated fuel of specified parameters by the adhesive-chemical method and other processing areas, including using carbon-containing waste from various productions.

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“…Незважаючи на свою економічну та соціальну вигоду, вугільна промисловість спричиняє різноманітні екологічні та соціальні проблеми [2][3][4][5]. Серед яких забруднення важкими металами викликає найбільше занепокоєння.…”

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“…Серед яких забруднення важкими металами викликає найбільше занепокоєння. Під впливом вивітрювання, вилуговування та вимивання водою, важкі метали можуть потрапляти в компоненти навколишнього середовища [5][6][7]. Більше того, тривале накопичення важких металів може призвести до зниження буферної здатності ґрунту, що загрожує навколишньому середовищу [6][7][8].…”

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