Procedure for Estimating Natural and Technological Components in Ash Content of Produced Coal

Khoyutanov, E. A.; Gavrilov, V. L.

doi:10.1134/s1062739118054891

J Min Sci

2018

DOI: 10.1134/s1062739118054891

|View full text |Cite

Procedure for Estimating Natural and Technological Components in Ash Content of Produced Coal

E. A. Khoyutanov

V. L. Gavrilov

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2019

2024

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, with an average geological thickness of 0.82 m, the size of wall rock undercut (the difference between the mining and geological thickness) is 0.23 m. It leads to an increase in the mined coal ash content and the formation of additional waste volumes after processing. Clogging of mined minerals with waste rocks negatively affects the technical and economic indicators of mines (Khoyutanov & Gavrilov, 2018;Petlovanyi, Lozynskyi, Zubko, Saik, & Sai, 2019;Petlovanyi & Ruskykh, 2019).…”

mentioning

confidence: 99%

The new approach to creating progressive and low-waste mining technology for thin coal seams

Petlovanyi¹,

Malashkevych²,

Sai³

2020

Journ. Geol., Geogr., and Geoec..

View full text Add to dashboard Cite

The problem of mining low-thickness coal seams in the Western Donbas is described in the article. Technological, economic and environmental reasons reducing the effectiveness of traditional technologies for their development are analyzed in detail and the new progressive approach is proposed to solve it. Attention is paid to the importance of hard coal for Ukraine energy independence and thin coal seams, which is the lowest indicator among coal deposits exploited in the developed countries worldwide. The key role of the Western Donbas mines in the Ukraine coal mining industry development is shown, where coal seams with a geological thickness in a range of 0.55 – 0.80 m take more than 50% of coal reserves. It leads to coal clogging and rising of the further enrichment costs. The interrelation of mining, geological seam thickness, and wall rock undercut is established, as well as decade-long tendency out of seam size increase is evaluated. It appropriately correlates with the general tendency of a geological thickness decrease and it leads to an increase of total ash content. The sources are defined and the volumes of waste rock run from coal mine to the surface are quantified, where 80 – 90% are underground mine working development and wall rock undercut while longwall mining operations. The negative influence of the applied mining technologies for low-thickness seams is shown. Whereby existing waste rock dumps are additionally replenished annually by 3.0 – 3.5 million of large-sized coal enrichment wastes and transported back onto waste rock dumps for very high expenses. It is determined that three waste dumps are located near urban settlements, which increases the environmental fee for their placement in three times. The new approach for selective mining of low-thickness seams with rock undercut placement in the gob area is proposed and it is characterized by the addition to the mechanized support of horizontally-closed scraper backfilling conveyor with a tamping device for rock compaction, which reduces the mine rock output by 25 – 30%. The preliminary calculations of parameters and prospective economic efficiency of the proposed mining technology for low-thickness coal seams are carried out in case of one typical longwall face taking into account the mined rock transportation cost to coal-preparation plant and its enrichment, reducing the cost of mine working supports. Its technology is by 17% more cost effective, than traditional mining technology while rough coal ash content does not exceed 21%.

show abstract

mentioning

confidence: 99%

The new approach to creating progressive and low-waste mining technology for thin coal seams

Petlovanyi¹,

Malashkevych²,

Sai³

2020

Journ. Geol., Geogr., and Geoec..

View full text Add to dashboard Cite

show abstract

Study on the difference of composition between traditional and modern lime used in the restoration of Qufu San Kong Ancient Architectural

Zhao,

Duan,

Zhang

et al. 2024

Case Studies in Construction Materials

View full text Add to dashboard Cite

An integrated approach to forecasting and managing emergency situations in the working faces of coal mines: a set of technical, organizational and measures to ensure occupational safety with subsequent assessment of potential consequences

Yevtushenko,

Tverdokhliebova

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The need for worker safety in the coal mining industry is critical because workers in this industry are exposed to a number of hazards and risks. Accidents occurring in the technogenic sphere of the coal industry cause significant damage to the state economy. Loss of production, repair and restoration of infrastructure, compensation to victims, damage to the environment require significant financial outlays. Therefore, it is important to take all necessary measures to prevent accidents and minimize their consequences. The purpose of the work is to identify the zones of manifestation of hazards and forecasting the risks of emergencies, as well as to develop a set of technical and organizational measures to prevent accidents and incidents during production work. The importance of the study lies in the development of recommendations for identifying the main risk factors in coal mines cleaning faces, the creation of a set of technical and organizational measures to quantify the risk of emergencies, as well as improving the level of safety of the main working processes in planning safe mining operations. Ensuring safety of coal industry workers is an integral part of successful and efficient operation of this industry.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Procedure for Estimating Natural and Technological Components in Ash Content of Produced Coal

Cited by 5 publications

References 19 publications

The new approach to creating progressive and low-waste mining technology for thin coal seams

The new approach to creating progressive and low-waste mining technology for thin coal seams

Study on the difference of composition between traditional and modern lime used in the restoration of Qufu San Kong Ancient Architectural

An integrated approach to forecasting and managing emergency situations in the working faces of coal mines: a set of technical, organizational and measures to ensure occupational safety with subsequent assessment of potential consequences

Contact Info

Product

Resources

About