Regenerative aluminum melting furnace

An aluminum melting furnace and regenerative technology, applied in furnaces, crucible furnaces, waste heat treatment, etc., can solve problems such as poor temperature self-control, overheating of molten aluminum, poor heat exchange structure, etc., to improve the utilization level and reduce contact. Area, the effect of reducing the degree of influence

Pending Publication Date: 2020-06-26
XIAN AEROSPACE SOURCE POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The temperature self-control ability is poor, resulting in local overheating of the aluminum liquid, and physical and chemical phenomena such as oxidation and hydrogen evolution are prone to occur on the surface of the aluminum liquid. This phenomenon affects the quality of aluminum products on the one hand, and increases the burning loss of aluminum products on the other hand
[0005] (2) The heat exchange structure is poor, and the heat loss is serious, among which the smoke exhaust loss is as high as 35-40%, and the heat dissipation loss is as high as 10-15%, which makes the natural gas consumption larger
[0006] (3) The method of directly directing the flame into the molten aluminum is often used, which can easily lead to local overheating of the surface of the molten a

Method used

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  • Regenerative aluminum melting furnace
  • Regenerative aluminum melting furnace
  • Regenerative aluminum melting furnace

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1:

[0039] Regenerative aluminum melting furnace of this embodiment, reference figure 1 , Including the furnace body 7, the furnace body is provided with a feed port, the furnace body is provided with a burner 2, an aluminum ingot melting platform 26 and a molten pool 28, the bottom of the molten pool is provided with a discharge port 12, and the aluminum ingot 23 passes through The feed port is placed on the aluminum ingot melting platform. The burner burns to produce hot flue gas to heat and melt the aluminum ingot. The liquid aluminum flows into the molten pool and is discharged through the discharge port; in order to effectively recycle the waste heat in the melting process of the aluminum ingot, the furnace There are also heat exchange pipes (30, 35) inside. The function of the heat exchange pipe is to introduce the waste heat / hot flue gas into the molten pool and exchange heat with the molten aluminum, and then output to the outside of the furnace, and then r...

Example Embodiment

[0064] Example 2:

[0065] In order to increase the utilization rate of waste heat, a heat pipe can be directly installed on the horizontal heat exchange tube for full heat exchange between hot flue gas and molten aluminum; the horizontal cross-sectional area of ​​the horizontal heat exchange tube can also be appropriately increased to form a heat pipe flue gas flow channel; A heat pipe can be arranged on the heat pipe flue gas flow path.

[0066] See for details Figure 5 , The horizontal heat exchange tube 35 is changed to the heat pipe flue gas flow channel 39, the heat pipe flue gas flow channel 39 is horizontally distributed, and its structure is not limited to the horizontal thin channel (the channel height is determined by the actual project, such as 0.1m), equal spacing or unequal Indirect circular pipes, equally spaced or unequal indirect square pipes. The heat pipe 38 is vertically inserted into the heat pipe flue gas flow channel 39. The hot side of the heat pipe contac...

Example Embodiment

[0067] Example 3:

[0068] In order to reduce the corrosion of the flue gas to the molten aluminum, reduce the burning loss of the molten aluminum. A heat exchange plate 40 is arranged in the furnace body and near the upper part of the molten pool. Furthermore, a solid heat exchange tube with high thermal conductivity can be arranged on the heat exchange plate.

[0069] Specific examples are Image 6 As shown, the heat exchange plate 40 is arranged horizontally and is connected to the wall of the molten pool in a sealed manner. The heat exchange plate 40 has a square hole (not limited to a square) on one side close to the aluminum ingot melting platform 26, and a baffle is arranged downward along the hole. The baffle is inserted into the molten aluminum but does not prevent the horizontal flow of the molten aluminum in the molten pool. In addition, the molten aluminum is not higher than the plate platform 40 during operation.

[0070] In a further solution, a solid heat exchange tub...

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Abstract

The invention discloses a regenerative aluminum melting furnace. The regenerative aluminum melting furnace includes a furnace body, and a feed port is formed in the furnace body. The regenerative aluminum melting furnace is characterized in that the furnace body is internally provided with a burner, an aluminum ingot melting platform and a molten pool, a discharge port is formed in the bottom of the molten pool, hot flue gas generated by the combustion of the burner heats and melts aluminum ingots on the aluminum ingot melting platform, liquid aluminum flows into the molten pool, and then is discharged from the discharge port; the furnace body is further internally provided with a heat exchange pipeline, an inlet of the heat exchange pipeline is located above the molten pool, and the heatexchange pipeline extends into the molten pool from the inlet to form at least one heat exchange pipe located in the molten pool, and the at least one heat exchange pipe continues to extend out of thefurnace body for being connected with a regenerative body. The high-temperature flue gas in the aluminum melting furnace heats aluminum liquid through a heat exchanger, the utilization of flue gas waste heat is improved, and the used amount of fuel is saved.

Description

technical field [0001] The invention relates to aluminum processing equipment, in particular to a novel regenerative aluminum melting furnace. Background technique [0002] Aluminum melting furnace is the most commonly used equipment in the aluminum processing and casting industry. Its melting process belongs to the production process that consumes the most energy and materials in the aluminum processing industry. Therefore, the working performance of the aluminum melting furnace directly affects the economy of the entire industry. [0003] There are mainly the following problems in the use of traditional aluminum melting furnaces: [0004] (1) The temperature self-control ability is poor, resulting in local overheating of the molten aluminum, and physical and chemical phenomena such as oxidation and hydrogen evolution are prone to occur on the surface of the molten aluminum. This phenomenon affects the quality of aluminum products on the one hand, and increases the burning ...

Claims

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Application Information

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IPC IPC(8): F27B14/14F27B14/16F27B14/20F27D17/00
CPCF27B14/0806F27B14/14F27B14/20F27B2014/146F27D17/004F27D2017/007Y02P10/25
Inventor 李凯华杨伟东苟远波杜文智吴迪向轶
Owner XIAN AEROSPACE SOURCE POWER ENG CO LTD
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