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In practice, the technological value of coal is rarely assessed. Research indicates that actual regulatory practices in a market economy are generally ignored in publications where the technological value is assessed. The case is made that, theoretically, estimates of the technological value may...
The mean reflectance R
of vitrinite and other macerals in coal whose structure is represented by molecular chemical models may be calculated on the basis of the contributions of structural-chemical groups to the molecular refraction, if the relation between the reflection, refraction, and...
Mathematical models are developed for predicting the yield of coke and the primary coking byproducts from mixed batch on the basis of petrographic data. Coefficients are calculated for conversion from laboratory yields to industrial yields.
Laboratory research and industrial data on the partial briquetting of coking batch by binder are analyzed. Briquetting by compacting the batch without binder is also found to be expedient.
The specific surface, total pore volume, and volume of micropores and mesopores are determined for carbon sorbents obtained by the thermolysis of naturally oxidized Kuznets Basin coal, in the presence of potassium hydroxide (mass ratio of KOH and coal R
KOH = 1.0 g/g). The porous characteristics...
The firing of ceramic heat insulation based on fuel-shale wastes without traditional materials is investigated. On heating insulation in the range 400–600°C, most of the volatiles are removed. Above 800°C, pyrolytic forms of carbon (coke and semicoke) are produced. In the range 1050–1100°C, the...
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