Development of a technology for setting a high-amperage electrolytic cell for electrical preheating using fusible links
https://doi.org/10.21285/1814-3520-2024-4-635-646
EDN: BPMVPW
Abstract
The paper aims to develop and test a design procedure for setting an electrolytic cell for electrical preheating without current interruption in a series of electrolysis units using aluminum fusible links. For the analysis of a complex electrical circuit, the circuit conversion technique, a direct application of Kirchhoff’s circuit laws, was used. The obtained patterns were identified and determined using graphical and analytical methods. Mathematical modeling was performed by means of approved programs. A design procedure was developed for setting an electrolytic cell for electrical preheating without current interruption in the series of electrolysis units. The computations (mathematical modeling) were performed for two startup variants: without current load interruption in the series of electrolysis units and with the lowering of current load in the series (to 250 kA). Pilot startup tests of two high-amperage electrolytic cells were performed without current interruption in the series of electrolysis units, i.e., at an operating current of 330 kA, as well as the startup of one electrolytic cell with the current load lowered to 250 kA. The study results indicate that the developed method allows a high-amperage electrolytic cell to be set for electrical preheating with the use of fusible links without interrupting the current load or with its lowering in the series of electrolysis units. Successful pilot tests of three high-amperage electrolytic cells operating at a current strength of 330 kA provide a means to extrapolate this preheating method to other high-amperage electrolytic cells operating at current strengths of 400 and 550 kA.
About the Author
E. Yu. Radionov
RUSAL Engineering and Technology Center LLC
Russian Federation
Russian Federation
Evgeniy Yu. Radionov, Cand. Sci. (Eng.), Deputy Director of the Department for Busbar and Measurement Development
37/1, Pogranichnikov St., Krasnoyarsk 660111
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Review
For citations:
Radionov E.Yu. Development of a technology for setting a high-amperage electrolytic cell for electrical preheating using fusible links. iPolytech Journal. 2024;28(4):634-646. (In Russ.) https://doi.org/10.21285/1814-3520-2024-4-635-646. EDN: BPMVPW
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