Examining features of the process of heavy metals distribution in technogenic placers at hydraulic mining

Malanchuk, Zinovii; Malanchuk, Yevhenii; Korniyenko, Valerii; Ignatyuk, Irina

doi:10.15587/1729-4061.2017.92638

Cited by 25 publications

(19 citation statements)

References 7 publications

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“…The specialized literature [37,[40][41][42][43][44] pays attention to the application of joint technological plants which means the usage of different renewable. Traditional energy sources with the consideration of the environmental management are fully described in the references [45][46][47]. This paper means the possibility of introduction the innovative technological issue of gas hydrates transforming with zero energy using.…”

Section: Development Of Joint Technologies For the Geoenergy Usage Based On Gas Hydrates Transformationmentioning

confidence: 99%

Gas hydrates technologies in the joint concept of geoenergy usage

et al. 2021

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The paper represents the analysis, which has helped to establish the usage of gas hydrate technologies in the methane conversion. This gas could be obtained in different ways. Possibilities and sources for the gas obtaining have been demonstrated. Use of other environmentally friendly sources to support operation in such systems in terms of joint energy complex has been considered. The necessary kinetic connections to provide operational sustainability of all the constituents have been given. The approach helps evaluate quantitatively the priority of its physicochemical transformations to obtain gas hydrates artificially. It is possible to transport methane at considerable distances when it is solidified. Actually, in this case there is no necessity to build costly compressor stations and pipelines for its transportation to consumers. The approach is extremely important for mining regions as it helps prolong the operating period and working out of the abandoned and off-balance coal reserves. In this case, it is proposed to apply special gasification technologies tending to maximum methane recovery. The proposed solutions give the possibility to define the trends of our further research. They will be highlighted in the following authors’ studies.

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Section: Development Of Joint Technologies For the Geoenergy Usage Based On Gas Hydrates Transformationmentioning

confidence: 99%

Gas hydrates technologies in the joint concept of geoenergy usage

et al. 2021

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“…Implementation of the method in the context of complete extraction makes it possible to prevent mineral raw materials from their getting to the deposit surface while mitigating technogenic environmental impact and increasing labour productivity with overall economic cost reducing (Malanchuk, Malanchuk, Korniyenko, & Ignatyuk, 2017;Sokolov & Udalov, 2017;Haiko, Saik, & Lozynskyi, 2018). Currently, the means of vibration action on soil ground is widely used to drive in forestopes, pipes, cases, and pales; to develop soil and process it; to drill wells; and compact extremely loose and water saturated sandy soil.…”

Section: Experimental Studymentioning

confidence: 99%

Regularities of hydromechanical amber extraction from sandy deposits

Malanchuk¹,

Korniyenko²,

Moshynskyi³

et al. 2019

Min. miner. depos.

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Purpose is to analyze the efficiency of hydromechanical amber extraction from sandy deposits relying upon the determined regularities concerning the effect of parameters while carrying out a series of laboratory tests and fullscale experiments.Methods. Laboratory tests and full-scale experiments (Volodymyrets amber-bearing deposit, village of Berezhnytsia) were carried out to analyze effect of the parameters of a hydromechanical technique on the velocity of amber extraction. The experiments also involved studies of occurrence medium; in this context, boiling process was modeled; and factors and parameters effecting suspense medium formation were researched. Methods of mathematical statistics were applied to obtain dependences describing mining parameters effect on amber extraction velocity.Findings. Basic parameters of hydromechanical technique, effecting amber extraction velocity, have been determined. Efficient values of air supply to provide maximum velocity of amber floating have been identified. Mathematical dependences, determining amber floating velocity depending upon air supply and mechanical effect frequency, have been obtained. In this context, amber production capacity is 90 to 95%. Basic parameters effecting amber mining (i.e. environmental density; amplitude of oscillations and their frequency; and water and air supply to sandy deposit of amber-bearing sand) have been defined.Originality. It has been first proved that amber floating velocity is of polynomial nature dependence upon environmental density where extremum is with 0.004 -0.006 m 3 /h air supply value; amber extraction experiences 2 -3 times intensification, if environmental density (ρ c ) is 1670 -1750 kg/m 3 , oscillation frequency is 26 -36 Hz, amplitude is A = 1.0 -2.4 mm, and air supply is q a = 0.004 -0.006 m 3 /h. In this context, amber floating (v) is 0.09 -0.12 m/s. If air supply is more than q a = 0.020 m 3 /h, amber extraction process stops. It has been first obtained polynomial dependence of amber flotation on oscillation frequency of operating device as well as on air supply to rock mass. Practical implications. The determined regularities of hydromechanical amber extraction from amber-bearing sand help make calculations, and select facilities for hydromechanical amber mining.

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“…This means that there is no commonly acceptable idea about the process of technogenic placers formation and the regularity that affects the distribution of metals in sites of their high concentration. In order to solve this problem, the study (Malanchuk, Malanchuk, Korniyenko, & Ignatyuk, 2017) presents the formation of the technogenic placer of the cone-shaped tuff on a horizontal plane. The regularity of the heavy metals core formation with the percentage content up to 80% is defined.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Modeling the formation of high metal concentration zones in man-made deposits

Malanchuk¹,

Корнієнко²,

Malanchuk³

et al. 2018

Min. miner. depos.

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Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core.Methods. Analysis of the conditions determining metal-containing placers formation and of metal losses at mining and processing plants, considering the local terrain. Findings.It is proved that the minerals that are carried away from the separators at mining and processing plants are concentrated in the core, which contains up to 90% of heavy metals.Originality. The studies have determined the main factors and regularities governing the distribution of heavy metals in technogenic placers, which help identify their location and calculate parameters of high metal concentration zones in the body of a man-made deposit.Practical implications. The research has proved the possibility of using metal-containing technogenic placers, and finding the zones of maximum metal concentration on the basis of the established regularities. The authors have developed a mathematical model of the gradual formation of technogenic deposits with zones of heavy metals concentration in metal-containing waste.

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Examining features of the process of heavy metals distribution in technogenic placers at hydraulic mining

Cited by 25 publications

References 7 publications

Gas hydrates technologies in the joint concept of geoenergy usage

Gas hydrates technologies in the joint concept of geoenergy usage

Regularities of hydromechanical amber extraction from sandy deposits

Modeling the formation of high metal concentration zones in man-made deposits

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