1 - 10 of 12 articles
SS coal, predominantly from open-pit mines, is regarded as an oxidized analog of valuable (KO, K, OS) isometamorphic coals from underground mines. The options for modifying SS coal are discussed.
Evaluation of the value of coking coals is considered.
Alternatives are proposed for calculating the relative value of coal and concentrate for the production of blast-furnace coke.
Box-coking data show the possibility of increasing the yield and strength of metallurgical coke by introducing a coking additive in the batch. Specifically, this additive is a product of slow coking of heavy petroleum residues, characterized by excellent thermoplastic properties: clinkering...
Experience in hot and cold conservation of coke batteries is considered. The cooling and repair of the battery lining is described. The efficiency of the repairs is evaluated.
Measures adopted at OOO Mechel-Koks in coke-battery heating with gas extraction through a single line are evaluated. Cost savings are not guaranteed in the construction and subsequent operation of the chosen gas-exhaust equipment.
Semicoking of Shubarkolsk (Kazakhstan) long-flame coal in the industrial gas generator at OAO Zavod Slantsy yields semicoke whose composition and physicochemical properties permit its use as a reducing agent in electrothermal production and as a fuel in ore sintering. The characteristics of the...
The department for condensation and primary cooling of coke-oven gas at OOO Mechel-Koks has been reconstructed, without shutting down production. The results of introducing KhPG-3600 primary gascooling units are considered.
Means of reducing the content of quinoline-insoluble components (the α1 fraction) in highly pyrolyzed coal tar and reducing α1 in pitch on tar processing are considered. A system for electrode-pitch production is developed.
The thermooxidation of moderate-temperature coal tar pitch with the return of pitch distillates is investigated, in conditions such that high-temperature grade-C pitch is obtained. Gas-liquid chromatography shows that the content of polycyclic aromatic hydrocarbons included in the list published...
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