Application of fine-grained binding materials in technology of hardening backfill construction

Kuzmenko, O; Petlyovanyy, M

doi:10.1201/b17547-79

Cited by 18 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conduct their reinforcement with the casing 2 with the arrangement in it of the element of the heat exchange system 4. Free space in the casing 2 is filled with loose material, such as sand [24]. The circuit of the element of the heat exchange system 4 with the installed circulation pump 5 is connected to the evaporator 6, which through the compressor 7 and the throttle valve 8 is connected to the condenser 9.…”

Section: Resultsmentioning

confidence: 99%

Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump

Saik

2017

AEF

View full text Add to dashboard Cite

Abstract. The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed. A number of available ways for using the sources of waste heat of mining enterprises, namely: outlet ventilation flow, mine water and other rock waste dumps, are investigated. The technological scheme of heat recovery from rock waste dump using heat pumps, which are component segments of the heat pump geosystem on the basis of borehole underground coal gasification, is developed.

show abstract

Section: Resultsmentioning

confidence: 99%

Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump

Saik

2017

AEF

View full text Add to dashboard Cite

show abstract

“…This indicates a change in the mechanism of formation, as well as acceleration of the gas hydrates formation. The effect of mechanical activation is also often used to intensify the hardening of binding substances [39].…”

Section: Literature Review and Problem Formulationmentioning

confidence: 99%

Intensifying the process of methane gas hydrates crystallization in the presence of surface-activated substances

et al. 2021

View full text Add to dashboard Cite

The crystallization process of gas hydrates during their formation in the presence of surface-active substances (SAS) is studied. The research is conducted in two directions – theoretical and experimental. Experimental data on the crystallization rate of methane gas hydrates formation in the presence of surfactants have been obtained: high-molecular compounds are used on the basis of polymeric quaternary ammonium salts containing side aliphatic radicals of various lengths in the acyl fragment, as well as a number of specific surfactants. The process of methane gas hydrates formation is performed using a laboratory setup of the NPO modification for the gas hydrates creation. To analyse the experimental data, technical and metrological instruments are used: stalagmometric method with automatic photoelectric drop counting, conductometric method, Wheatstone bridge, spectrophotometric titration of amino end-groups, viscometer VPZh-1. It has been substantiated that the crystal formation rate depends on the surfactant concentration. New experimental dependences of the gas hydrates formation on surfactants under thermobaric conditions in the presence of surfactants have been found. It has been revealed that the crystallization process during the methane gas hydrates formation is accelerated in the presence of a surfactant. As a result of their application, the effect of solubilization and catalysis arises with the formation of the so-called “diffusion zone”, the size of which decreases in the presence of surfactants, thereby accelerating the substance transfer to the surface on which crystallization occurs. An increase in the surfactant concentration leads to an increase in the rate of molecular diffusion, and also creates a more intense turbulent diffusion.

show abstract

“…Germanium is not removed from coal and it is completely lost due to coal mining (86.9 tons) and losses (30.8 tons) (Rehionalna dopovid…, 2016a). In the mining of waste rock, the waste of underground mining is also used as a backfilling material when filling out the worked out spaces (Kuzmenko, Petlyovanyy, & Heylo, 2014;Malashkevych, Sotskov, Medyanyk, & Prykhodchenko, 2018) or processed into fuel due to the high content of combustible components (Lozynskyi et al, 2018;Saik, Petlovanyi, Lozynskyi, Sai, & Merzlikin, 2018).…”

Section: Figure 5 Mine "Imeni MI Stashkova" Waste Heap (Area 408 Hectares)mentioning

confidence: 99%

Review of man-made mineral formations accumulation and prospects of their developing in mining industrial regions in Ukraine

Petlovanyi¹,

Kuzmenko²,

Lozynskyi³

et al. 2019

Min. miner. depos.

View full text Add to dashboard Cite

Purpose. Analysis of the man-made mineral formations of ore mining and smelting, fuel and energy complexes development accumulation, location and prospects amount in the Dnipropetrovsk region.Methods. Comprehensive approach, including analysis of state statistics, waste handling sites (WHSs), regional environmental report, environmental passport of the region, as well as data from other information sources is used in the work. Aerial photographs of man-made formations were obtained using the Google Earth 7.1.8 satellite program.Findings. The analysis of the main man-made mineral formations of ore mining and smelting, fuel and energy complexes accumulation in Ukraine (coal and mining industry waste heaps, tailing dumps, ash dumps, smelter slag dumps) was conducted, their amount and occupied areas were estimated. According to the densest location of man-made formations, they are divided into 4 regions: the Prydniprovsk region, the Kryvyi Rih region, the Nikopol region, the Pavlohrad region. According to information sources, the content of some valuable components in man-made formations has been established. Based on the world market prices of technogenic deposits components research, it was proposed to grade them according to the cost of valuable components. The promising directions have been proposed for the use of mineral resources in various economic sectors. It is noted that from the perspective of development of mineral and raw materials potential, the bulk formations are of interest because of their large reserves in the minimum area. But from the perspective of environmental protection and the interests of the Ukrainian people, the bulk technogenic formations occupying significant areas of agricultural land and having smaller mineral reserves are of great interest.Originality. The conception of man-made raw material mineral fund for further industrial development as an alternative to natural deposits is extended and systematized. For the first time, an integrated and detailed analysis has been performed of technogenic waste of the largest waste storage region in Ukraine, as well as the grouping has been proposed of mining and energy sector waste by density of location and by the contained components value. Practical implications.A sketch-map of the man-made objects location was drawn up and their gradation was carried out according to the preliminary prospects of their development. This will provide a more objective approach to the concept of industrial waste development and planning the strategy for the development of mineral and raw materials potential both at the state and regional levels.

show abstract

Application of fine-grained binding materials in technology of hardening backfill construction

Cited by 18 publications

References 0 publications

Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump

Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump

Intensifying the process of methane gas hydrates crystallization in the presence of surface-activated substances

Review of man-made mineral formations accumulation and prospects of their developing in mining industrial regions in Ukraine

Contact Info

Product

Resources

About