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Quantitative relations are found between the structural and chemical characteristics of macerals of the basic coal groups (vitrinite Vt, inertinite I, liptinite L), on the one hand, and their reflection coefficients R
r and the corresponding dispersions σ
, on the other. For coal of a...
Preliminary dust removal from regular coal is proposed as a means of facilitating coal enrichment and reducing its environmental impact, taking account of foreign experience.
The efficiency of selective crushing with pneumomechanical separation is investigated as a function of the quality of the coal batch and the operating conditions of the fluidized-bed separator.
A model of the motion of coal suspension in a hydraulic classification unit with a toroidal separating rotor is considered. In simulation, the motion of the suspension is divided into stages. For each stage, differential equations are derived; their solution permits recommendations regarding the...
The relation between the physical properties of coal ash and the CRI and CSR values of coke is established. It is suggested that increase in the mean molecular mass of coal ash increases the reactivity and disintegration of coke pieces in tests according to the ISO 18894:2006 (E) standard.
Data of practical importance regarding polyazeotropic mixtures are obtained. They permit the determination of the rate at which the composition changes over the azeotropic series and the rate at which the composition of an individual azeotrope shifts with variation in boiling point (pressure)...
The basic principles in formulating pitch-coke mixtures for the production of large graphitized electrodes are considered. With unchanging technological requirements, a mathematical model for calculating the basic characteristics of the blank (prior to graphitization) is proposed, taking account...
Recent research on absorbent applications of monoethanolamine and its solutions in water and other organic compounds is reviewed.
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