A combined conveying system for aluminum electrolysis high temperature flue gas and aluminum cladding

Abstract

The invention discloses an aluminum electrolysis high-temperature smoke and aluminum ladle combined conveying system which comprises a conveying pipeline conveying high-temperature smoke and aluminum ladles. The conveying pipeline comprises an inner-layer pipeline and an outer-layer pipeline, wherein the inner pipeline is an aluminum ladle conveying pipeline and is connected with aluminum electrolytic cells and a casting workshop, the inner pipeline is internally provided with aluminum outlet pipes in butt joint with aluminum outlets in the lower portions of aluminum electrolytic cells, and automatic aluminum discharging ladles and an automatic aluminum ladle conveying assembly are arranged in the inner pipeline. The inner pipeline is sleeved with the outer pipeline, and an annular-section pipe cavity used for conveying high-temperature smoke is formed between the outer wall of the inner pipeline and the outer pipeline. A smoke pipe of an aluminum electrolytic cell gas collecting cover communicates with the outer pipeline through a smoke pipe and is connected to a smoke treatment system through the outer pipeline. By means of the aluminum electrolysis high-temperature smoke and aluminum ladle combined conveying system, aluminum electrolysis cell high-temperature smoke and aluminum ladle combined automatic conveying is achieved, high-temperature smoke and molten aluminum are subjected to mutual heat preservation, energy losses of the high-temperature smoke and the molten aluminum in the transporting process are greatly reduced, aluminum electrolytic operation is optimized, and a key function is achieved for intelligence of aluminum electrolysis.

Description

technical field [0001] The invention belongs to aluminum electrolysis technology, and in particular relates to a combined conveying system of aluminum electrolysis high-temperature flue gas and aluminum cladding. Background technique [0002] Due to the air mixed in the traditional electrolytic cell during the pole change process, the temperature of the flue gas is relatively low, mostly more than 300 degrees, and the utilization rate of the remaining heat is extremely low. Most aluminum factories basically do not treat it. However, these low-temperature flue gases are indeed the largest piece of heat loss in the aluminum electrolytic cell. According to actual tests, the heat taken away by the aluminum electrolytic flue gas accounts for about 40-60% of the total energy loss of the electrolytic cell. If the heat is recovered, the comprehensive energy consumption of aluminum electrolysis can be greatly reduced. At present, the biggest problem in recycling is that the temperat...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new type of aluminum electrolysis high-temperature flue gas and aluminum bag combined conveying system to realize the high-temperature flue gas Mutual insulation with molten aluminum to achieve the purpose of reducing the energy consumption of aluminum electrolysis and reducing the labor cost of aluminum extraction and transportation

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