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Uranium-bearing coal and lignite is characterized by elevated oxidation, with the development of degraded fusinite and other components. The coal contains calcium-magnesium ash, and correspondingly the organic system is of high-carbonate type. The oxygen activity is specified by the basicity of...
Papers presented at the Sixteenth Annual Seminar of Coke-Industry Specialists by enterprises maintaining Russian coke furnaces during times of economic crisis are summarized. Topics considered include the provision of refractories for the reconstruction and repair of furnace linings; new repair...
Laboratory data on the aggregation of small semicoke pieces from Kansko-Achinsk lignite are presented. In the proposed method, the semicoke is mixed with coking coal at the output from the semicoking reactor and is then pressed and cooled. It is assumed that the same principle may be used to...
Short-term creep data at 1300°C for Dinas samples cut from the brick lining of the heating walls in coke furnaces after prolonged operation (up to 31 years) indicates that, on the basis of generalized creep diagrams, the primary creep curves ɛ
(t) may be described by a power law: ɛ
The bitumen, humic acids, and thermolytic products of regular and oxidized Baganursk and Tugrugnursk lignite (Mongolia) and Kansko-Achinsk lignite (Russia) are characterized. Principles are formulated for the waste-free production of water-resistant briquets, from regular and oxidized lignite,...
The composition of polyaromatic hydrocarbons liberated at different carbonization rates of coal pitch in an inert atmosphere is studied. The benz[a]pyrene equivalent is calculated. It is shown that reducing the carbonization rate increases the emissions of carcinogenic polyaromatic hydrocarbons.
Extractive distillation is considered as a means of isolating and purifying materials that have similar boiling points or form azeotropic mixtures.
At most coke plants, the existing technologies for the capture of coking byproducts are not the best available. Accordingly, the working areas of coke plants and the atmosphere are polluted with copious emissions. At the world’s leading coke plants, the byproduct-trapping shop is free of toxic...
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