Heat-preserving electrolytic tank

Abstract

The invention provides a heat-preserving electrolytic tank. The heat-preserving electrolytic tank comprises a tank body, an upper tank part, an anodic carbon block, a gas collecting hood, a blanking pipe and a shell breaking hammer, wherein the anodic carbon block is fixed on an upper horizontal bus of the tank body; the gas collecting hood is fixed at the upper tank part; the blanking pipe is fixed in the middle of the gas collecting hood; the shell breaking hammer penetrates through the blanking pipe. The heat-preserving electrolytic tank is characterized in that movable heat-preserving tank hoods are arranged at the side top and on the side wall of the tank body; a heat-preserving cover plate is arranged at the middle top of the tank body and is connected with the gas collecting hood through a connecting piece. Existing heat-preserving coverage material such as oxidation alumina, a face shell block and an electrolyte block is replaced with the quickly-replaceable movable heat-preserving hoods and does not need to be frequently added, so that the labor strength is reduced, the working efficiency is improved, heat losses are reduced, and damage to electrolytic tank heat balance and material balance caused by the fact that heat-preserving coverage material falls into the electrolytic tank in the anode replacement and heat-preserving material adding processes is avoided; moreover, the environmental pollution can be greatly reduced, and the problem that the alumina cannot be quickly dissolved and diffused, which is caused by that fact blanking is performed only from a middle seam of a large pre-roasting aluminum electrolytic tank is solved.

Description

[0001] technical field [0002] The invention relates to a thermal insulation electrolytic cell, which belongs to the technical field of electrolysis. technical background [0003] As far as the existing molten salt electrolytic aluminum smelting technology is concerned, since the early 1980s, after nearly 30 years of development, it has reached a quite advanced level. However, the traditional industrial electrolytic aluminum technology is still facing major innovations, especially the research and development of energy-saving and environmentally friendly aluminum electrolytic cells with new structures, which has become the mainstream of future electrolytic cell technology development, such as cathode carbon block multi-steel rod technology, aluminum electrolytic cell super magnetic field stability technology and more. In the current aluminum electrolysis production process, alumina, surface shell blocks and electrolyte blocks are used as thermal insulation covering materia...

AI Technical Summary

Problems solved by technology

When performing the above operations, a large number of manual shelling operations are required, which is not only labor-intensive, time-consuming, and heat loss is large, but also the insulation covering material will inevitably fall into the electrolytic cell during the operation, thereby destroying the electrolytic tank. Electrolyzer heat balance and material balance affect the quality of electrolytic products

In addition, due to the large amount of thermal insulation material attached to the residual anode carbon block replaced from the current electrolytic cell, a large amount of dust will be generated during the electrolysis workshop, transportation process and cleaning of the residual anode carbon block, which not only seriously affects the workshop environment, but also increases Material consumption cost per ton of aluminum

The current feeding method of the pre-baked aluminum electrolytic cell will prevent the rapid dissolution and diffusion of alumina, thus affecting the smooth and efficient operation of the electrolytic production

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