Preliminary heating of calcined anode


Тип публикации: статья из журнала

Год издания: 2015

Ключевые слова: Aluminum, Electrolytic gases, Gas cooling, Gas removal system, Heat exchanger model, Heat recovery, Pre-heating pre-baked anodes

Аннотация: There was carried out the literature and patent review of technical solutions, ensuring the recovery of thermal energy, released in electrolytic production of aluminum. There is offered the use of the heat process gases, removed from electrolytic cells for pre-heating of baked anodes before their installation in cryolite-alumina meПоказать полностьюlt. Currently preheating of baked anodes for two minutes, using crane, is maintained over the high electrolyte mainly for moisture drying. There was developed the design of container device for preheating of baked anodes by heat exhaust process gases in aluminum production. The system liquid with boiling point (not lower than 1400 °C) was used as coolant. For the purpose of reduction of heat losses, the sidewalls and bottom of container are provided with thermal insulation. A heat exchanger with sufficient heat exchange surface and low static resistance is offered as devices. Optimal number of devices, installed in the flue series, should not be less than three, which will ensure the maximum efficiency of heat recovery process gases, removed from the cells. Anode preheating reduces the effect of thermal shock force, excludes the need for exposure of anode block over an open melt, reduces the time of technological operations "anode replacing", and reduces the specific energy consumption due to more rapid heating of anode to the melt temperature. There was developed the appropriate device, providing the anode pre-heating to 90-100 °C, and significant energy savings in electrolytic production of aluminum. There is shown the account of reduction of energy consumption while providing of preheating of prebaked anode process gases, confirming the feasibility of technical solutions and meeting the modern requirements of Russian legislation in the field of energy and resources.

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Журнал: Tsvetnye Metally

Выпуск журнала: Vol. 2015, Is. 1

Номера страниц: 54-56


  • Kondratev V.V. (Irkutsk National Research Technical University, Irkutsk, Russian Federation)
  • Ershov V.A. (Irkutsk National Research Technical University, Irkutsk, Russian Federation)
  • Shakhray S.G. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Ivanov N.A. (Irkutsk National Research Technical University, Irkutsk, Russian Federation)

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