ANALYSIS OF THE DEVELOPMENT OF THE COAL WASTE DUMP BODY IN THE OSTRAVA CITY

Abstract The research aim was to determine the long-term impact of the mine waste stored at the coal waste dump Hałda Ruda on the content of heavy metals in the bottom sediments of the Bytomka River. It is a watercourse flowing along this coal waste dump and has been under its influence for over fifty years. The research also attempted to determine the seasonality of changes (2 years) and mobility of selected elements. The article presents total contents of Cr, Mn, Ni, Cu, Zn, As, Cd and Pb in the bottom sediments collected from the Bytomka River. It also focuses on the distribution of these elements in particular geochemical fractions determined with the Tessier's sequential chemical extraction procedure. Total element contents were determined with an EDPXRF (Energy Dispersive X-ray Fluorescence) technique. The extractants of particular Tessier's fractions were determined quantitatively with an ICP-MS (Inductively Coupled Plasma Mass Spectrometry) spectrometer. The research results show that the stored waste significantly influences the contents of heavy metals in the Bytomka River bottom sediments. The lowest concentration of heavy metals was observed at the B1 spot (above the dump), while the highest one was measured at the B3 spot (below the dump). Sequential chemical extraction of the bottom sediments indicates that the Zn content in the ion-exchange and carbonate fractions diminished within a year. Nevertheless, Zn bound to Fe and Mn oxides acted in the opposite way. Mn, Zn and Pb are the most dangerous elements from the viewpoint of environmental hazards, as their total concentrations were high. Moreover, their high contents were observed in the most mobile (ion-exchange and carbonate) fractions. Extremely toxic Cd was bound to the oxide fraction to the largest extent. Cu was mainly bound to the organic fraction while environmentally hazardous Cr was bound to the residual fraction.

Download Full-text

Recovery of Fine Coal Grains from Post-Mining Wastes with Use of Autogenous Suspending Bed Technology

Management Systems in Production Engineering ◽

10.2478/mspe-2020-0032 ◽

2020 ◽

Vol 28 (4) ◽

pp. 220-227

Author(s):

Daniel Kowol ◽

Haldun Kurama

Keyword(s):

Grain Size ◽

Ash Content ◽

Mining Waste ◽

Mineral Deposits ◽

Coal Waste ◽

Mining Wastes ◽

Test Results ◽

Waste Dump ◽

Secondary Mineral ◽

Fine Coal

AbstractIn addition to rock waste post-mining waste dump sites also contain coal grains justifying treating the dump sites as secondary mineral deposits. The article presents the results of laboratory tests aimed at determining the possibility of using suspending bed technology to separate a combustible substance from post-mining waste of a 4-0 mm grain size. The test results showed the possibility of obtaining good quality coal concentrates from coal waste of a grain size of 4-1 mm. The need for desludging and densifying the feed for the classifier with an autogenic suspending bed in the case of coal waste beneficiation in a wide 4-0 mm grain size justifies the use of a two-chamber device or two separate classifiers for narrower grain size classes. Concepts of systems for the recovery of fine coal grains providing the use of the classifier with autogenous suspending bed for the density distribution of feeds with high ash content are presented. The concepts were developed for beneficiation of the material in a 4-0 mm grain class.

Download Full-text

Trace element geochemistry of self-burning and weathering of a mineralized coal waste dump: The Novátor mine, Czech Republic

International Journal of Coal Geology ◽

10.1016/j.coal.2017.03.002 ◽

2017 ◽

Vol 173 ◽

pp. 158-175 ◽

Cited By ~ 13

Author(s):

Bohdan Kříbek ◽

Ivana Sýkorová ◽

František Veselovský ◽

František Laufek ◽

Jan Malec ◽

...

Keyword(s):

Czech Republic ◽

Trace Element ◽

Coal Waste ◽

Trace Element Geochemistry ◽

Waste Dump ◽

Element Geochemistry

Download Full-text

Impact of hard-coal waste dump on water quality — A case study of Ludwikowice Kłodzkie (Nowa Ruda Coalfield, SW Poland)

Journal of Geochemical Exploration ◽

10.1016/j.gexplo.2014.08.011 ◽

2014 ◽

Vol 146 ◽

pp. 127-135 ◽

Cited By ~ 3

Author(s):

Krzysztof Chudy ◽

Henryk Marszałek ◽

Jakub Kierczak

Keyword(s):

Water Quality ◽

Hard Coal ◽

Coal Waste ◽

Waste Dump ◽

Sw Poland

Download Full-text

Mineralogy and geochemistry of coal wastes from the Starzykowiec coal-waste dump (Upper Silesia, Poland)

International Journal of Coal Geology ◽

10.1016/j.coal.2014.02.007 ◽

2014 ◽

Vol 127 ◽

pp. 42-55 ◽

Cited By ~ 24

Author(s):

Justyna Ciesielczuk ◽

Magdalena Misz-Kennan ◽

James C. Hower ◽

Monika J. Fabiańska

Keyword(s):

Coal Waste ◽

Waste Dump ◽

Upper Silesia ◽

Coal Wastes

Download Full-text

Laphamite, an arsenic selenide analogue of orpiment, from burning anthracite deposits in Pennsylvania

Mineralogical Magazine ◽

10.1180/minmag.1986.050.356.11 ◽

1986 ◽

Vol 50 (356) ◽

pp. 279-282 ◽

Cited By ~ 14

Author(s):

Pete J. Dunn ◽

Donald R. Peacor ◽

Alan J. Criddle ◽

Robert B. Finkelman

Keyword(s):

Microprobe Analysis ◽

Polarized Light ◽

Reflectance Spectra ◽

Coal Waste ◽

Polished Section ◽

Waste Dump ◽

Golden Yellow ◽

Arsenic Selenide ◽

Burning Coal

AbstractLaphamite, ideally As2(Se,S)3, is monoclinic, P21/n, with a = 11.86(1), b = 9.756(9), c = 4.265(9) Å, β = 90.17°, V = 493.5 Å3, Z = 4, D (calc.) = 4.60, D (meas.) = 4.5(1) g/cm3. Microprobe analysis yielded: As 47.0, Se 43.7, S 8.7, sum = 99.4 wt. %. In plane polarized light in polished section at about 3200 K laphamite is moderately bireflectant from white to grey. Reflection pleochroism is absent but fiery red internal reflections are characteristic as are golden yellow reflections along scratches. Anisotropy is moderate with grey rotation tints, masked in some sections by internal reflections. Reflectance spectra in air and oil between 400 and 700 nm are given. Colour values for the CIE illiminant C in air are, for R1 followed by R2: Y% 29.0, 33.5, λd 480, 478; Pe% 9.1, 8.7. Laphamite forms dark red crystals, up to 5.0 mm, associated with orpiment, arsenolite, and an unnamed phase, NH4AlF4, in a burning coal waste-dump at Burnside, Northumberland County, Pennsylvania.

Download Full-text