Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: ICSOBA 2019; Красноярск; Красноярск

Год издания: 2019

Ключевые слова: Cathodes of aluminum electrolysis cells, electrical preheating of cathode blocks, steel collector bars

Аннотация: Optimally designed modern aluminum electrolysis cells are made of high-quality materials and are designed for service life of more than five years. Their productivity and technological efficiency are largely determined by the quality of the electrical contact created between the cathode blocks and steel collector bars. Before collector bar casting, preheating of the cathode blocks is required, for which several technologies are used. One of them is gas preheat, which does not provide the necessary uniformity of heating. In 2014-2018, "ISO" Ltd, together with "RPC MHD", Ltd, we designed, manufactured and implemented installations for preheating of cathode blocks before casting of the cast iron for the following cell technologies: S-8B, S8Ba, S8BM, OA-300M2, SHpVV, SHpBM, SHpVV-120kA, SHpVV-105kA. We have put in operation the installations of the type UENB-R-01, UENB-R-02 and UENB-R-03 in Krasnoyarsk, Bratsk and Shelekhovo branches of "ISO" Ltd, in which electric heating is used with the help of tubular electric heaters developed by "RPC MHD" Ltd. Cooperation to improve the designs of installations allowed replacing gas heating which achieved the required characteristics, in particular, uniform temperature distribution on the surface of the cathode blocks and steel collector bars in the ranges of 350 - 410 °C and 430 – 550 °C, the difference between the average temperature of the blooms and the average temperature of the cathode blocks not least than 100°C, the period of preheating is 120 minutes. The efficiency of electric preheating is confirmed by reliable and long-life operation of the cathodes in electrolysis cells of type S-8B, S8Ba, S8BM, OA-300M2.

Номера страниц: 693-697

Издатель: ISCOBA

• Antropov V. (Director of the Department of Aluminum Production)
• Galemov T. (Head of Production and Design Department LLC "ECM")
• Temerov А. (Head of Electric Heating Systems Department LLC "RPC MHD")
• Mikhaylov D. (Siberian Federal University)

• РИНЦ (eLIBRARY.RU)