1 - 10 of 14 articles
In the transformation of plant matter to humus, the redox conditions are determined in the peat-forming level (aerobic conditions) by the partial pressure of atmospheric oxygen and at lower levels (anaerobic conditions) by the activity of oxygen, specified by the basicity of the water-mineral...
A method is developed for formulating a rheological model that describes the plastic mass of coal; the parameters of the plastic mass in the state of maximum deformability are considered. This method is used in investigating coal from the Pechorsk, Donetsk, and Karagandinsk basins.
The relation between the basic products of low-temperature pyrolysis of sapropelites and the catagenic maturation of their organic matter is investigated.
Experimental data illustrate the diversity of ash composition in Russian coal, even within a single rank. Examples show that the ash basicity may be used for effective optimization of the coking-batch composition by basin, rank, and components, in improving the CRI and CSR values of coke.
The characteristics of special coke made from Shubarkol coal with different yields of volatiles are presented. By increasing the yield of volatiles in the special coke from the TOO Sary-Arka Spetskoks plant to optimal values (7–8%), the mechanical strength and physicochemical properties may be...
Presentations at the International Conference on Ferroalloy Production relating to new carbon reducing agents as an alternative to coke are briefly summarized. Such reducing agents include lightweight reducing agents (peat, lignin, wood chips), coal D and the corresponding semicoke, lean coal,...
A new oligomerization procedure for phenol byproducts from coke production is experimentally studied. This method, oxidative combination, is intended to produce an effective coinhibitor of styrene thermopolymerization. When combined with a Mannich base, the new oligomer exhibits excellent...
A technology for the liquid-phase production of carboxyl resin in the presence of catalyst is developed. It is shown that components of lignite tars and their derivatives are the active components in the production of polyurethane composites.
Wastewater regeneration at coal-processing plants is an important aspect of coal enrichment. It is largely responsible for balanced operation of the water-slurry system at the enterprise. The basic factors that impair the separation processes are identified, and corrective methods are proposed.
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