'Method and arrangement for closing and cooling the top of an anode casing for a Soderberg anode in an electrolytic Cuba for aluminum production'

摘要

Method and arrangement for closing and cooling the top of an anode casing for Soderberg anode in an electrolytic Cuba for aluminum production. The method is characterized in that the amount of gases removed from the top of the anode to provide a pressure in this part sufficiently reduced as to allow air to flow through spaces provided between a casing cover of the anode is regulated and each of a series of contact pins so that these gases do not escape through said space and to keep the temperature of the top below a set value. The arrangement has air gaps provided between each of the contact bolts and the openings in the cover to allow flow of surrounding air through these spaces.