STARTING gas gathering SHELTER aluminum electrolyzers

摘要

The invention relates to ferrous metallurgy, in particular to the means of collecting the exhaust gases of an aluminum electrolytic during startup. The gas-collection cover is a hangar type device in cross section -ravnobokuyu trapezoid. It consists of a rigid metal frame, sheet-metal. To ensure the electrical requirements of the device is provided with a bottom layer of insulation around the perimeter. On the roof of the shelter located eyelets for securing straps when transporting by crane on the case of electrolysis. Longitudinal side cover is divided into sections, each of which is provided with a steel roller shutter providing access when necessary to the longitudinal sides of an aluminum electrolytic for technological operations. Gas gathering exhaust gas system includes a powerful extractor fan mounted in the end wall of the shelter, and arranged to be connected to the common system housing duct via a metal bellows and the flange. The gas-collection cover allows to completely eliminate emission of harmful substances into the atmosphere of the housing in the starting period and also reduces the amount of fluoride salts to run, due to the transportation of exhaust gases in a dry gas cleaning, which improves the environment and reduce the cost of launch.