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In the laboratory coking of production batches at OAO EVRAZ ZSMK, including those containing coal from the Elegest deposit, special attention is paid to batches with different quality of the clinkering, coking, and lean components, so as to determine the maximum possible content of Elegest coal...
The ash residue formed in the combustion of individual droplets (initial radius 0.5–2.0 mm) of organic coal–water fuels at different oxidizing-agent temperatures in an oxidant (hot-air) flux is studied experimentally. The main components of the fuel suspensions are as follows: coal filter cake;...
The properties of coking batch may be stabilized by means of DK coking additive based on the products of petroleum pyrolysis, characterized by low ash content (A
= 0.4%), high sulfur content (S
= 4.1%), and high yield of volatiles (V
= 17.2%) relative to coal concentrates....
Ultrasound treatment of coal tar increases the yield of pitch by a factor of 1.5 in subsequent oxidation by atmospheric oxygen. The yield of pitch may be regulated in terms of its softening temperature by changing the oxidation time. To obtain standard pitch, the following conditions are...
The distribution and content of acid–base centers at the surface of fuel shales and shale ash are determined. The results indicate that they may be used as fillers in polymer composites, filter materials, and sorbents. The surface of fuel shales is characterized by the presence of centers with...
Flotation wastes at OAO TsOF Belovskaya are studied with a view to their disposal in systems for the combustion of high-ash coal. Analysis indicates that, if the flotation wastes are mixed with regular coal, they may be used as fuel in low-temperature fluidized-bed furnaces. The introduction of...
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