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Zbykovskii E.I.,Donetsk National Technical University | Golubev A.V.,Donetsk National Technical University | Shul'ga I.V.,Ukrainian State Coal Chemistry Institute
Coke and Chemistry | Year: 2013

A new gas-distributor design is proposed for dry-slaking chambers. Study of the flow structure on a physical model shows that the new design ensures more uniform inert-gas distribution over the chamber volume. © 2013 Allerton Press, Inc. Source


Desna N.A.,National Metallurgical Academy of Ukraine | Miroshnichenko D.V.,Ukrainian State Coal Chemistry Institute
Coke and Chemistry | Year: 2011

A literature review shows that the oxidation of coal changes its granulometric composition, packing density, moisture content, and clinkering properties, the quality of the resulting coke, and the yield of coking byproducts. On account of the increased proportion of oxidized coal in coking batch, research is expedient in order to formulate recommendations regarding its use. © 2011 Allerton Press, Inc. Source


Sosnova E.B.,Ukrainian State Coal Chemistry Institute
Coke and Chemistry | Year: 2010

The results for the clinkering properties obtained on the basis of State Standard GOST 9318-91 (ISO 335-74) and the ISO 15585 standard are compared. © 2010 Allerton Press, Inc. Source


Miroshnichenko D.V.,Ukrainian State Coal Chemistry Institute | Balaeva Y.S.,Ukrainian State Coal Chemistry Institute
Coke and Chemistry | Year: 2011

Formulas for predicting the higher heat of combustion of coal on the basis of technical analysis (the yield of volatiles), elementary analysis, and petrographic analysis are verified. It is found that the formulas are only valid for the samples used in their derivation. Statistical analysis of data for coal from the Donetsk and Lvov-Volynsk basins shows that the higher heat of combustion of such coal is most accurately described by a mathematical formula in which the predictors are petrographic characteristics of the initial coal components, including the reflection coefficient of vitrinite. The mean higher heat of combustion may be determined for vitrinite at different metamorphic stages (for ranks from D to T) and also for liptinite and the sum of fusinized (lean) components in Ukrainian Donetsk and Lvov-Volynsk coal. © 2011 Allerton Press, Inc. Source


Sytnik A.V.,Ukrainian State Coal Chemistry Institute | Kuznichenko V.M.,Ukrainian State Coal Chemistry Institute
Coke and Chemistry | Year: 2011

Laboratory, semiindustrial, and industrial methods of determining the expansion pressure of coking batch are subjected to critical analysis. There is no standardized method by which the expansion pressure may be calculated within a single apparatus over a wide range of packing densities-from loose charge to rammed charge. © 2011 Allerton Press, Inc. Source

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