SU949021A2 - Gas collector bell for aluminium production by electrolysis - Google Patents

Description

one

The invention relates to the electrolytic production of aluminum from molten media and is aimed at improving the anode arrangement of the cell with a self-calcined cym anode.

According to the main author. St. No. 565952. The gas collecting bell of the electrolyzer for aluminum production is known, assembled from separate sections. In order to improve the sealing, the connecting tides are made with grooves forming cavities at the joints of the sections, into which the inserts are placed and the sealing powder is fixed, and from the bottom they are covered with L-shaped plates. The use of L-shaped plates makes it possible to reliably seal the areas of the joints between the sections that are under stiffening, using a sealant of this powder. In order to reliably overlap the joints, a part of the inside of the cavity, which is located in the cavity, is made in the form of a sheet, bent by the shape of the walls of the cavity, parallel to their rigidity. In addition, the liners have a bend, enveloping the vertical wall of the section and entering the gap between the vertical section of the T-shaped plate and stiffness 111.

However, to seal the joints required. Yupgs considerable labor costs for the manufacture of L-shaped plates and liners having a complex shape and assembly. In addition, at the joints below the grooves, through which harmful gases penetrate into the atmosphere of the shells, the workplaces and the surrounding space are polluted. The sealing of these gaps requires additional labor costs; Moreover, the L-shaped plates leaving underneath the anode casing do not have a noticeable effect on the improved sealing of the bell.

The purpose of the invention is to reduce labor costs and increase the reliability of sealing the joints of the gas collecting bell.

The goal is achieved by the fact that the holes with holes are formed with L-grooves forming through holes in the lower part of the junction cavity, and the joints cavities are equipped with monograms.

in horizontal and vertical overhangs.

A reliable overlap of the joints is achieved by placing the liner in the cavity of the liner, which with its horizontal height joins with the anode casing, and vertically enters the through hole in the lower part of the cavities, with a hermetic seal being provided by filling the sealing powder into the cavity after inserting it into them. Such a constructive solution increases reliability. sealing joints and reduces labor costs for manufacturing liners, since the latter can be cast from the same material as the sections and supplied with them.

FIG. 1 image of a section joint; in fig. 2 - gas assembly without

vk adhl1a; in fig. 3 shows section A-A in FIG. one.

The bell contains sections 1 with tides 2, equipped with L-shaped grooves 3, with through parts 4, at the junction of the section they form cavities 5 into which are placed with a gap of an insert 6 that have horizontal 7 and vertical 8 protrusions, and horizontal: th I contacts catom anode 9, and in the gaps between the walls of the cavities and

At the bottom of the barrel, as well as in the liner, the hermetic powder 10 is poured to the liner and to the cathode anode, which is used as alumina or powdered magnesium oxide.

Assembling and sealing in such a bell is worn to hanging the section and placing the inserts in the cavity with a subsequent backfilling of the powder with a powder. During operation, sealing is maintained by adding powder to the cavity at the junction of the sections.

The present invention reduces the labor costs for the assembly and increases the need for sealing the gas collection bell.

Claims (1)

1. Copyright certificate CCCF № 565952, cl. C 25 C 3/22, 1977. th s e f I 7-7h 3 4 fff 6