scholarly journals Valorization of coal mining waste dumps from he mines of Katowicki Holding Węglowy

2017 ◽  
Vol 33 (1) ◽  
pp. 35-50
Author(s):  
Krystian Probierz ◽  
Łukasz Gawor ◽  
Iwona Jonczy ◽  
Marek Marcisz
Keyword(s):  
Coal Mining ◽  
Mining Waste ◽  
Waste Material ◽  
Hard Coal ◽  
Recovery Processes ◽  
Waste Dumps ◽  
Upper Silesian Coal Basin ◽  
Coal Particles ◽  
Hard Coal Mining

Abstract The cataloging of over 220 coal mining dumping grounds after hard coal mining was carried out on the area of the Upper Silesian Coal Basin (USCB). Considering the significant content of coal particles in the waste, these object may be perceived as perspective anthropogenic deposits. In order to define the possibilities of recovery, an attempt of linking the quality of coal in the deposit and the in waste material was performed. Another step is the reclamation and use of dumping grounds after completing effective recovery processes. The purpose of the research was the cataloging, mapping and valorization of coal mining waste dumps from Katowicki Holding Węglowy coal mines, for the needs of reclamation and management of examined objects and defining the potential recovery of coal from the dumps. The valorization of the post-mining waste dumps was done with the use of original methodology, considering the problems of: reclamation, management, accessibility of the dumps as well as environmental hazards. T he directions of the technical reclamation (e.g. landscape objects, tabular dumps) and biological reclamation (e.g. forest direction, mixed reclamation (grass and tree reclamation), grass cultivation, lack of reclamation) were defined. Accessibility with regard to open access/closing of the dump area and the roads leading towards the object were evaluated. T he connection of coal quality in the deposits of KHW S.A. and in waste material enabled the definition and evaluation of the potential possibilities of recovery of coal from the post mining dumping grounds.

scholarly journals Mercury in grain size fractions of aggregates and extractive waste from hard coal mining

2017 ◽  
Vol 33 (4) ◽  
pp. 107-123
Author(s):  
Beata Klojzy-Karczmarczyk
Keyword(s):  
Grain Size ◽  
Coal Mining ◽  
Total Mercury ◽  
Mercury Content ◽  
Waste Material ◽  
Hard Coal ◽  
Size Fractions ◽  
Coal Sludge ◽  
Hard Coal Mining ◽  
Grain Size Fractions

Abstract Hard coal production is closely linked to the generation of significant quantities of extractive waste that require further use, in practice recognized as waste or as a raw material. It is therefore important to seek further or improve existing methods of waste material management. Studies conducted in earlier works have shown that it is possible to obtain a low-sulfur grain size fraction (grain class) so that it can be used in excavations requiring reclamation by filling. The purpose of the research presented in this paper is to determine the mercury content in hard coal mining by-products. The presence of mercury in the waste material is known and documented in the literature. However, the level of the content of this element in aggregates or wastes is important. This paper presents the problem of determining the minimum size of rock fractions meeting the specified limits for mercury content above which the material can be considered as safe are used to fill post-mining excavations. The total mercury content was determined using the classical atomic absorption method for all the collected and isolated samples (Altec AMA-254 analyzer). The total mercury content of the samples in the analytical state (Hga) was determined. Laboratory research included waste material directly from production (mining and processing of rock) from the one of the hard coal mine USCB. Coal sludge (silt) (after dewatering on filter presses) and 13 aggregates samples were analyzed, and then separated into 15 grain size fractions. The mercury determination method used in the study allowed its content in the range of 0.0568 to 0.0787 mg/kg, on an average mean of 0.0649 mg/kg (average moisture of the samples - 4.3%). On the other hand, the total mercury content of all the fractions extracted from 13 samples of aggregates showed a high variability in the content of this element, with a noticeabletendency of decreasing mercury content along with the increase in grain size. The average values of the total mercury content decrease from 0.4030 mg/kg for the finest fraction (0-6 mm) to 0.0291 mg/kg for the thickest fraction (120-200 mm) (aggregate sample moisture at approximately 1%). In general, it can be stated that the analyzed samples of coal sludge and grain fractions of aggregates meet the criteria for inert mining waste with respect to the mercury content. Based on the studies conducted, it can be concluded that due to the presence of mercury there is no need to discard fine fractions from aggregates. However, the removal of waste rock material less than 8 mm significantly increases the quality of the material. The obtained results and the statistical analysis clearly indicate a strong correlation between the occurrence of mercury and total sulfur in the material (R2 linear coefficient of determination at 0.9151), where no weathering has yet occurred. In the case of weathering, however, there is no correlation between the occurrence of mercury and sulfur, which may be due to the differences in the processes that govern the transformation and migration of mercury and sulfur compounds.

Chances and Threats of Hard Coal Mining Development in Poland – The Results of Experts Research/Szanse I Zagrożenia Dla Rozwoju Górnictwa Węgla Kamiennego W Polsce – Wyniki Badań Eksperckich

2014 ◽  
Vol 59 (2) ◽  
pp. 395-411 ◽  
Author(s):  
Józef Dubiński ◽  
Marian Turek
Keyword(s):  
Coal Mining ◽  
Present Situation ◽  
Hard Coal ◽  
Coal Production ◽  
Actual Situation ◽  
Mining Sector ◽  
Energy Carriers ◽  
Hard Coal Mining ◽  
Adverse Influence ◽  
Other World

Abstract The actual situation of hard coal mining in Poland has been presented. In particular, these factors, which have impact on the competiveness of mining sector were highlighted and need of its improving has been stressed. Outlining present situation of hard coal mining an attention was paid to its specific threats. The primary analytical material is based on the results of questionnaire conducted among 92 specialists and experts from the mining sector. The questions were related to chances and threats for development of hard coal mining in Poland. The factors determining them were grouped in such domains as economy, technology, geology, social and law aspects. Moreover, the special attention was paid to the problem of increasing and high costs of coal production which constitute significant threat for the financial and economic situation of the mining enterprises. Also the adverse influence of these high cost on the competitiveness of Polish hard coal with other world producers and with other energy carriers was emphasized. The conclusions summarize the achieved results of analysis.

Radiological evaluation of mine water discharges from hard coal mining in the Fossa Eugeniana Area, Germany

Kerntechnik ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. 101-107
Author(s):  
C. Wanke ◽  
S. Ritzel ◽  
R. Sachse ◽  
R. Michel
Keyword(s):  
Coal Mining ◽  
Mine Water ◽  
Hard Coal ◽  
Radiological Evaluation ◽  
Hard Coal Mining

Strategies for follow-up care and utilisation of closing and flooding in European hard coal mining areas

2012 ◽  
Vol 89 ◽  
pp. 51-61 ◽  
Author(s):  
C. Klinger ◽  
A. Charmoille ◽  
J. Bueno ◽  
G. Gzyl ◽  
B. Garzon Súcar
Keyword(s):  
Coal Mining ◽  
Hard Coal ◽  
Mining Areas ◽  
Follow Up Care ◽  
Hard Coal Mining

scholarly journals How Miners and Other Professional Groups Perceive the Benefits and Risks of Hard Coal Mining: A Study on the Role of the Affect Heuristic

2021 ◽  
Vol 12 ◽  
Author(s):  
Piotr Zielonka ◽  
Wojciech Białaszek ◽  
Bartłomiej Dzik ◽  
Katarzyna Wybrańczyk
Keyword(s):  
Coal Mining ◽  
Public Support ◽  
Mining Industry ◽  
Hard Coal ◽  
Safety Hazards ◽  
Information Campaigns ◽  
Professional Groups ◽  
Affect Heuristic ◽  
Hard Coal Mining

The problems that are inherent in the green shift of the energy sectors are particularly visible in countries where the hard coal mining industry plays an important role in the economy and society. For any transition to be successful, public support is crucial. This empirical study shows that – as a consequence of the affect heuristic – those who perceive hard coal mining as beneficial tend to minimize both its detrimental environmental impacts and its personal safety hazards. Ignoring the affect heuristic may have retarded transformations and led to a failure of many information campaigns.

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