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Nizhniy Tagil, Russia

Visloguzova E.A.,OAO EVRAZ NTMK | Kashcheev I.D.,Ural Federal University | Zemlyanoi K.G.,Ural Federal University
Refractories and Industrial Ceramics | Year: 2013

Results are provided for comparative analysis of claimed physicochemical and physicoceramic properties of periclase-carbon objects from different producer firms. Supplementary research determines the properties of periclase object charge components (periclase and carbon purity and grain size, strength before and after coking firing, and other parameters). Converter wall and bottom residual thickness are analyzed with comparison of operating conditions. © 2013 Springer Science+Business Media New York. Source

Coke and Chemistry | Year: 2014

As shown by critical analysis, a recent article by Rubchevskii and his colleagues failed to adequately review methods of assessing the condition of coke [1]. A method developed in the central laboratory of the coke plant at OAO EVRAZ NTMK has long been used to assess the condition of coke in terms of the difference in the yield of volatiles (ΔVdaf) between coke breeze (Vcb daf) and coke (Vc daf). This method is simpler, more convenient, and more precise than the determination of the bulk yield of volatiles from coke. © 2014, Allerton Press, Inc. Source

Coke and Chemistry | Year: 2015

Information is presented regarding the products of coke shop 3 at OAO EVRAZ NTMK, the state of the coke-oven linings, and major repairs at coke batteries 9 and 10. © 2015, Allerton Press, Inc. Source

Coke and Chemistry | Year: 2015

Calculation shows that the quantity of chemical waste generated by coke production at OAO EVRAZ NTMK is more than 1000 t per month. Recent changes in coke production that may affect waste generation are considered: the introduction of batch crushing; relining of coke batteries 5 and 6; shut-down of coke batteries 7 and 8; hot repairs at coke batteries 9 and 10; shutdown of the open-hearth shop, where some of the chemical waste had been incinerated; discontinuation of the removal of light pyridine bases from the coke-oven gas in the byproduct-capture shop; the discontinuation of the production of heavy pyridine bases in the tar-distillation shop and their processing in the rectification shop; and the closing of the department of coumarone–indene resins. Recalculated with respect to the batch, the total rate of chemical-waste generation in coke production at OAO EVRAZ NTMK is 0.443%. A complex waste-processing system has been developed: 30% of the total is sent to the coal store and processed with the coal batch in coke ovens; 27% is processed to produce emulsion, which is added to the batch; and 43% is processed with tar, pitch, and raw benzene. Such waste processing at OAO EVRAZ NTMK increases its monthly output by 250 t for coke; 300 t for tar; 880000 m3 for coke-oven gas; and 180 t for commercial products. © 2015, Allerton Press, Inc. Source

Yakusheva E.A.,OAO EVRAZ NTMK | Stepanov Y.V.,OAO EVRAZ NTMK
Coke and Chemistry | Year: 2013

The quantity of solid tar phase from a gas collector is calculated. The factors affecting its formation are discussed. The quantity of coal-tar sludge formed in the gas collector is determined. The influence of various factors on the formation and yield of sludge is considered: the batch preparation and coking; and the effectiveness of the mechanized clarifiers in byproduct-trapping shops. The solid phase of the sludge is investigated. © 2013 Allerton Press, Inc. Source

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