1 - 6 of 6 articles
Molecular-mechanics methods are used for calculations of model compounds within the organic mass of coal. The properties of methyl groups in conjugate systems are shown to differ from those of methyl groups in paraffins. The centers of reactivity with respect to oxygen and water molecules are...
The development of local internal stress in the coal batch is analyzed on the basis of recent theoretical and experimental data. Its influence on coke quality is demonstrated. The influence of mineralized rock particles and large hard-to-crush particles of highly metamorphic coal (including...
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...
An analytical review reveals that, for current batch with an elevated content of petrographically diverse coal and with organic additives, it is very difficult to predict the coke yield and basic coking byproducts from the yield of volatiles. A more promising approach is prediction on the basis...
The coking properties of coal pitch depend significantly on its fractional composition, which determines the set of structural components involved in meso-phase formation. The optimal combination of high-molecular aromatic compounds, polycyclic compounds of intermediate molecular mass, and...
The efficiency in stabilizing coke properties is assessed on the basis of half of the coke savings in the production of 1 t of hot metal. The relation between the quality of the coke (M
10) and its consumption in the production of 1 t of hot metal is derived from literature data for blast...
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