Publication: Studies of the Properties of Coke Plates of VCC and Doncarb Trademarks
Дата
2019
Авторы
Sofronov, V. L.
Buynovsky, A. S.
Damm, Y. P.
Polyanskaya, A. V.
Khorokhorin, V. S.
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Аннотация
The operating experience for anode materials used in the production of fluorine shows that not all plates that meet the requirements of Russian technical specifications TU 48-12-34-95 have the required service life; some of them are destroyed quite quickly during operation. In this regard, we have carried out the studies of coke plates of Russian manufacturers using differential thermal analysis (DTA), X-ray structural analysis (XRD), atomic emission spectroscopy (AES), scanning electron microscopy (SEM), various physical-mechanical and electrical methods. The technical characteristics of the coke plates of two different trademarks: "Doncarb" produced by Doncarb Graphite LLC (Chelyabinsk) and "VCC" produced by the Volzhsky Chemical Complex LLC (Volzhsky) were determined: porosity, ash content, density, compressive strength, electrical resistivity. The technical characteristics described above fully meet the requirements of the Russian technical specifications. It was shown that the content of impurities in Doncarb plates is 0.50 mass %, while that in VCC plates is 0.33 mass %. The porosity of the coke plate materials was carried out. In general, Doncarb samples are characterized by the presence of pores 0.6-12 mm in size, while the presence of larger pores (more than 117 mu m) is characteristic of VCC samples. The presence of the turbostratic structure of carbon with the parameters d(002) = 0.347-0.345 nm was established for the coke plates of both trademarks. Classification of coke plates with respect to their thermal stability was carried out on the basis of the data obtained by means of differential thermal analysis. The use of the obtained data as a supplement to the parameters included in TU 48-12-34-95 allows one to improve the evaluation of the quality of coke plates and to predict their lifetime reliably.
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Цитирование
Studies of the Properties of Coke Plates of VCC and Doncarb Trademarks / Sofronov, VL [et al.] // CHEMISTRY FOR SUSTAINABLE DEVELOPMENT. - 2019. - 27. - № 4. - P. 356-363. - 10.15372/CSD2019151