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On the basis of the principles in State Standard GOST R ISO 21748, formulas are derived for the expanded uncertainty in standard methods of measurements of eleven coal parameters. Values of the uncertainty are calculated. A form of representation of the measurement results is proposed for use in...
Analysis of the composition, structure, and properties of 63 samples of Ukrainian, Russian, and United States coal clarifies their influence on the gross calorific value in the wet and dry ash-free states and the maximum moisture content. Quantitative formulas are obtained for the influence of...
On the basis of six-year operational data for a 5000-m3 blast furnace, the dependence of the coke consumption on its strength M
25 and M
10 and the content of the >80 mm fraction is calculated by different methods. The quality of the coke has a clear influence on coke consumption and...
The influence of various additives—including nanoparticles—on coal pitch is investigated, with a view to improving its properties. Surfactants facilitate the formation of coal-pitch products but have little effect on their properties. Materials that react with the pitch components may increase...
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