The Effect of Degree of Fouling of Coal Dust on Railway Foundation Stability

2018 ◽  
pp. 234-249
Author(s):  
F. N. Okonta
Keyword(s):  
Coal Dust

STRUCTURAL CHARACTERIZATION AND IN VITRO CYTOTOXIC POTENTIAL OF COAL DUST IN A ROMANIAN POWER PLANT

2010 ◽  
Vol 9 (9) ◽  
pp. 1297-1304
Author(s):  
Alice Raducanu ◽  
Aurica Suvergel ◽  
George Darie ◽  
Ileana Rau ◽  
Constantin Grigoriu ◽  
...  
Keyword(s):  
Power Plant ◽  
Structural Characterization ◽  
Coal Dust ◽  
Cytotoxic Potential

Features of antibodies against benzo[a]pyrene formation in workers of coal mines and thermal power plants

2019 ◽  
pp. 9-14
Author(s):  
Ye. G. Polenok ◽  
S. A. Mun ◽  
L. A. Gordeeva ◽  
A. A. Glushkov ◽  
M. V. Kostyanko ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Reference Group ◽  
Coal Dust ◽  
Thermal Power ◽  
Coal Mines ◽  
Serum Levels ◽  
Thermal Power Plants ◽  
Immune Reactions

Introduction.Coal dust and coal fi ring products contain large amounts of carcinogenic chemicals (specifically benz[a]pyrene) that are different in influence on workers of coal mines and thermal power plants. Specific immune reactions to benz[a]pyrene therefore in these categories of workers can have specific features.Objective.To reveal features of antibodies specifi c to benz[a]pyrene formation in workers of coal mines and thermal power plants.Materials and methods.The study covered A and G class antibodies against benz[a]pyrene (IgA-Bp and IgG-Bp) in serum of 705 males: 213 donors of Kemerovo blood transfusion center (group 1, reference); 293 miners(group 2) and 199 thermal power plant workers (group 3). Benz[a]pyrene conjugate with bovine serum albumin as an adsorbed antigen was subjected to immune-enzyme assay.Results.IgA-Bp levels in the miners (Me = 2.7) did not differ from those in the reference group (Me = 2.9), but in the thermal power plant workers (Me = 3.7) were reliably higher than those in healthy men and in the miners (p<0.0001). Levels of IgG-Bp in the miners (Me = 5.0) appeared to be lower than those in the reference group (Me = 6.4; (p = 0.05). IgG-Bb level in the thermal power plantworkers (Me = 7.4) exceeded the parameters in the healthy donors and the miners (p<0.0001). Non-industrial factors (age and smoking) appeared tohave no influence on specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers.Conclusions.Specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers are characterized by peculiarities: the miners demonstrate lower levels of class A serum antibodies to benz[a]pyrene; the thermal power plant workers present increased serum levels of class G antibodies to benz[a]pyrene. These peculiarities result from only the occupational features, but do not depend on such factors as age, smoking and length of service at hazardous production. It is expedient to study specific immune reactions to benz[a]pyrene in workers of coal mines and thermal power plants, to evaluate individual oncologic risk and if malignancies occur.

Experimental Research on the Qualitative Characteristics of Iron Ores and Ferrous Waste That Can Be Used in Blast Furnace Mixt Injection Technology

2019 ◽  
Vol 70 (11) ◽  
pp. 3835-3842
Author(s):  
Mihai Dumitru Tudor ◽  
Mircea Hritac ◽  
Nicolae Constantin ◽  
Mihai Butu ◽  
Valeriu Rucai ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Experimental Research ◽  
Raw Materials ◽  
Coal Dust ◽  
Production Costs ◽  
Iron Ores ◽  
Fine Grained ◽  
Experimental Laboratory ◽  
Injection Technology ◽  
Direct Use

Direct use of iron ores in blast furnaces, without prior sintering leads to a reduction in production costs and energy consumption [1,2]. Fine-grained iron ores and iron oxides from ferrous wastes can be used together with coal dust and limestone in mixed injection technology through the furnace tuyeres. In this paper are presented the results of experimental laboratory investigations for establishing the physic-chemical characteristics of fine materials (iron ore, limestone, pulverized coal) susceptible to be used for mixed injection in blast furnace. [1,4]. The results of the experimental research have shown that all the raw materials analyzed can be used for mixt injection in blast furnace.

SYSTEM APPROACH TO ANALYSIS OF THE REASONS FOR METHANE EXPLOSIONS AND COAL DUST ON RUSSIAN MINES

2020 ◽  
Author(s):  
Виктория Владимировна Смирнякова ◽  
Валерий Витальевич Смирняков ◽  
Федор Александрович Орлов
Keyword(s):  
Statistical Methods ◽  
System Approach ◽  
Coal Dust ◽  
Technical Analysis ◽  
Analysis Methods ◽  
Dust Explosions ◽  
Comparative Results

Авторами приведены статистические данные об авариях, связанных со взрывами газа и пыли на горных предприятиях России. Показаны сравнительные результаты оценки причин аварийных ситуаций, проведенных статистическими методами и методами технического анализа. The authors provide statistics on accidents associated with gas and dust explosions at mining enterprises in Russia. Comparative results of the assessment of the emergencies causes conducted by statistical methods and technical analysis methods are shown.

Preparation and performance of novel APP/NaY–Fe suppressant for coal dust explosion

2021 ◽  
Vol 69 ◽  
pp. 104374
Author(s):  
Qingxi Wei ◽  
Yansong Zhang ◽  
Kun Chen ◽  
Bo Liu ◽  
Xiangbao Meng ◽  
...  
Keyword(s):  
Coal Dust ◽  
Dust Explosion ◽  
And Performance
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