Aluminum liquid turning bag hot air energy-saving heating device and heating method thereof

Abstract

The invention relates to an aluminum liquid turning bag hot air energy-saving heating device which is characterized in that a hot air flue container is communicated and connected with a smoke exhaust opening of an aluminum melting furnace, a blower which can send compressed air into a separation layer of the hot air flue container is connected at the junction thereof; a fire banking cover is connected with a vertical column which performs the support effect through a crossbeam, a flame jetting pipe is arranged on the fire banking cover; a hot air pipe is connected on an air tank of the hot air flue container, the other end of the hot air pipe is connected with the top end of the flame jetting pipe, a lateral opening is arranged at the middle part of the flame jetting pipe, a coal gas pipe is connected thereon, the other end of the coal gas pipe is connected with a gas outlet of a coal gas producer; and a turning bag which can contain molten aluminum liquid is arranged below the fire banking cover. The preheating and the thermal insulation processes are integrated with the aluminum melting process, the three processes can be carried out simultaneously, and the invention can complete the preheating and the thermal insulation of the turning bag while melting aluminum, thereby realizing the recycling of heat energy to the maximum extent, which can not be achieved by the prior art.

Description

technical field [0001] The invention relates to the field of aluminum casting, in particular to an energy-saving hot air heating system for molten aluminum that can absorb and utilize the waste heat discharged from the flue of the aluminum melting furnace of the gas generator and the remaining part of the gas of the gas generator as fuel. Apparatus and its heating method. Background technique [0002] In the aluminum casting process, the molten aluminum needs to be injected into the subcontractor that maintains an appropriate temperature, and refined and deteriorated in it, and then transported to the pouring site. During this process, the normal pouring temperature of the molten aluminum needs to be maintained. This is undoubtedly a very critical link for the preheating and heat preservation of subcontractors. At present, there are different ways of heating liquid aluminum subcontracts according to local conditions. The main ways are: heating devices and methods using liqu...

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Problems solved by technology

[0003] Although the above method can solve the heating problem of molten aluminum subcontracting to a certain extent, there are still many disadvantages: such as the heating method using liquefied petroleum gas as fuel, which requires frequent replacement and handling of cylinders, high gas cost and transportation cost, and high gas cost. The consumption is large, the flame intensity is small, and strict safety measures are required; the heating method using diesel as fuel has high fuel cost and large consumption. During the heating process, fuel oil and noise pollute the environment seriously, and it is easy to pollute the aluminum liquid; Pipeline gas and natural gas are used as fuel for heating. Although the gas cost is lower than the former two, the gas consumption is still relatively high.

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