Determination of total and fine airborne dust in coals

2020 ◽  
pp. 5-14
Author(s):  
S. A. Epshtein ◽  
E. L. Kossovich ◽  
E. P. Vishnevskaya ◽  
K. V. Agarkov ◽  
A. V. Koliukh
Keyword(s):  
Coal Sample ◽  
Dust Particles ◽  
Kuznetsk Coal ◽  
Sieve Analysis ◽  
Fine Dust ◽  
Coal Basin ◽  
Petrographic Composition ◽  
Airborne Dust ◽  
Kuznetsk Coal Basin

Issues on evaluation of coals ability to liberate airborne dust during transportation and transloading are nowadays relevantly current. In the current work, a new method was presented for evaluation of dust contents in coals. It is based on modeling of the processes of coals transloading and transportation. The essence is to stir coals sample of size <3mm at a constant rotation rate with a simultaneous passing a fixed volume of air through a filter system and determining the total airborne dust content and dust class sizes more or less than 10 microns. During the tests, a sample of commodity coal is used as a residue of a sieve analysis of the representative coal sample after the sieve of 3 mm. Experiments were held at two hard coals of the Kuznetsk coal basin differing in their metamorphism degree and petrographic composition. It was established that within the measurement error, the total amount of airborne dust able to be released during transloading for both the considered samples is comparable. On the other hand, the size classes distribution for dust particles over or less than 10 microns varies significantly and depends on the coals rank and petrographic composition. High inertinite contents determines, presumably, the increase of fine dust particles (less than 10 microns) in the total airborne dust released.

scholarly journals Evaluation of Marblewood Dust’s (Marmaroxylon racemosum) Effect on Ignition Risk

2021 ◽  
Vol 11 (15) ◽  
pp. 6874
Author(s):  
Miroslava Vandličkova ◽  
Iveta Markova ◽  
Katarina Holla ◽  
Stanislava Gašpercová
Keyword(s):  
Particle Size ◽  
Dust Particles ◽  
Wood Dust ◽  
Sieve Analysis ◽  
Granulometric Analysis ◽  
Analysis Measurement ◽  
Risk Research ◽  
Minimum Ignition Temperature ◽  
The Impact

The paper deals with the selected characteristics, such as moisture, average bulk density, and fraction size, of tropical marblewood dust (Marmaroxylon racemosum) that influence its ignition risk. Research was focused on sieve analysis, granulometric analysis, measurement of moisture level in the dust, and determination of the minimum ignition temperatures of airborne tropical dust and dust layers. Samples were prepared using a Makita 9556CR 1400W grinder and K36 sandpaper for the purpose of selecting the percentages of the various fractions (<63, 63, 71, 100, 200, 315, 500 μm). The samples were sized on an automatic vibratory sieve machine Retsch AS 200. More than 65% of the particles were determined to be under 100 μm. The focus was on microfractions of tropical wood dust (particles with a diameter of ≤100 µm) and on the impact assessment of particle size (particle size <100 µm) on the minimum ignition temperatures of airborne tropical dust and dust layers. The minimum ignition temperature of airborne marblewood dust decreased with the particle size to the level of 400 °C (particle size 63 μm).

scholarly journals HISTORY OF GEOGRAPHICAL RESEARCH IN THE KEMEROVO REGION

2017 ◽  
Vol 2017 (1) ◽  
pp. 37-42
Author(s):  
Надежда Егорова ◽  
Nadezhda Egorova ◽  
Юрий Удодов ◽  
Yurii Udodov
Keyword(s):  
Teaching Methodology ◽  
Kuznetsk Coal ◽  
Coal Basin ◽  
Mountain Areas ◽  
Geographical Knowledge ◽  
Kuznetsk Coal Basin ◽  
Geographical Research ◽  
Geography Teaching ◽  
History Of

<p>The article describes the main stages of development of geographical knowledge about nature, economy and population in theKemerovoregion. The stage of initial accumulation of geographical knowledge and the development of the mineral riches of the plains and mountain areas of the region was defined. The article features the contribution of the explorers to the study of the physiographic features of the Kuznetsk region, the contribution of scientific research in academic and interdisciplinary expeditions to expand the knowledge about the territory. It defines the role of geologists in the discovery, exploration and in the study of the region and the Kuznetsk coal basin. The author has selected special Lutugin and Soviet stages in the development of geological knowledge, including that about the Kuznetsk coal basin (Kuzbass). The article specifies the contribution of scientists to the study of the relief, climate and inland waters, including the contribution of botanists, zoologists, soil scientists of theTomskandNovosibirskuniversities in the study of soil-vegetation cover of theKemerovoregion. The emphasis is on physical-geographical and economic-geographical research, the role of the Department of geography, Geology and geography teaching methodology in these studies. In conclusion, a retrospective of the main stages of geographical research of the territory of theKemerovoregion and their event content was constructed.</p>

Machine vision based particle size and size distribution determination of airborne dust particles of wood and bark pellets

2009 ◽  
Vol 196 (2) ◽  
pp. 202-212 ◽  
Author(s):  
C. Igathinathane ◽  
S. Melin ◽  
S. Sokhansanj ◽  
X. Bi ◽  
C.J. Lim ◽  
...  
Keyword(s):  
Particle Size ◽  
Machine Vision ◽  
Size Distribution ◽  
Dust Particles ◽  
Airborne Dust

GEOLOGICAL-GEOMORPHOLOGICAL CHARACTERISTICS AND NATURAL RESOURCES OF THE KEMEROVO REGION

2017 ◽  
Vol 2017 (1) ◽  
pp. 53-59
Author(s):  
Юрий Удодов ◽  
Yurii Udodov ◽  
Надежда Егорова ◽  
Nadezhda Egorova ◽  
Г. Багмет ◽  
...  
Keyword(s):  
Raw Materials ◽  
Mineral Resources ◽  
Geological Structure ◽  
Kuznetsk Basin ◽  
Kuznetsk Coal ◽  
Late Permian ◽  
Coal Basin ◽  
Copper Ore ◽  
Kuznetsk Coal Basin ◽  
Geomorphic Features

<p>The article deals with the geological structure, geomorphic features and mineral resources ofKemerovoregion. It describes stratified formation of late Precambrian (Riphean and Vendian), Paleozoic, Mesozoic and Cenozoic eras. The article considers four main tectono-magmatic stages of geological development of the area (posteritas-early Ordovician, Ordovician-Silurian, Devonian-late Permian and late Permian-Mesozoic). It enumerates the characteristics of the major tectonic elements of the Kuznetsk Alatau and Mountain Shoria, Salair and Tom ' -Kolyvan areas of the Kuznetsk coal basin. It lists deposits of iron, manganese, polymetallic lead-zinc and copper ore, aluminum raw materials. One of the oldest and valuable minerals of the region is gold. The coalbearing formations of the Kuznetsk coal basin described in the article are the largest of all the exploited coal basins of the world, in terms of reserves and quality of coal. The article lists non-metallic minerals, and the geography of their fields. It describes the main morphostructural elements: the Salair ridge, Alatau-Shor highlands, Tom ' -Kolyvan hill, the Kuznetsk basin and theChulymvalley.</p>

On determining the parameters of face blocks during mining operations with backhoes

2022 ◽  
pp. 76-81
Author(s):  
O.I. Litvin ◽  
Ya.O. Litvin ◽  
M.A. Tyulenev ◽  
S.O. Markov
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Kuznetsk Coal ◽  
Coal Basin ◽  
Mining Operations ◽  
Kuznetsk Coal Basin ◽  
Equipment Operation ◽  
Mining Companies ◽  
The Face ◽  
The Given

The backhoe hydraulic shovels (backhoes) have been widely used in open-pit mining operations in the Kuznetsk coal basin since the early 2000s. Now their number is growing every year, both because new operations begin on new sites, and because of the backhoe advantages. However, up to now parameters of their operation, more particularly the parameters of the face blocks, are often taken according to the actual data, i.e. based on the accumulated experience of the mining companies, and are not calculated using the approved scientifically validated methods. In the given article the authors give some preconditions for creation of a uniform methodology to calculate parameters of the face blocks depending on mining-geological and miningtechnical conditions. It is noted that the manufacturers of excavation equipment quote the data corresponding to the maximum possible parameters of the equipment operation, in particular the height of the excavated layer, as a result of which it is rather difficult to apply this in practice. Preliminary conclusions about the need to take into account the diversity of the above conditions and their interrelation with the parameters of a particular model of the excavation and loading equipment have been made.

Environmental Issues in Kuznetsk Coal Basin. Scientific Approaches and Technologies to Reduce Environmental Pollution

2018 ◽  
Vol 26 (3) ◽  
pp. 221-239
Author(s):  
Z. R. ISMAGILOV ◽  
N. V. ZHURAVLEVA ◽  
M. A. KERZHENTSEV ◽  
S. A. YASHNIK ◽  
E. V. MATUS ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Environmental Issues ◽  
Kuznetsk Coal ◽  
Coal Basin ◽  
Kuznetsk Coal Basin
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