Method for reducing aluminum scrap melting loss

A technology of aluminum shavings and melting loss, which is applied in the field of aluminum shavings recycling, can solve the problem of high melting loss, achieve the effect of reducing melting loss, the effect is obvious, and the effect of avoiding metal oxidation and volatilization

Inactive Publication Date: 2018-12-28
GUANGXI LIUZHOU YINHAI ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for reducing the melting loss of aluminum chips, which can solve the problem of excessive melting loss in the recycling process of existing aluminum chips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1——The method for reducing the melting loss of aluminum shavings

[0017] Heat the molten aluminum in the aluminum melting furnace to 730°C, turn off the flame of the burner, turn on the electromagnetic stirrer, put 5% aluminum chips in the furnace into the molten aluminum, and artificially assist the stirring within 5 minutes to melt the aluminum chips.

[0018] After calculation, the melting loss of aluminum shavings in this embodiment is 2.8%.

Embodiment 2

[0022] Embodiment 2——The method for reducing the melting loss of aluminum shavings

[0023] Heat the molten aluminum in the aluminum melting furnace to 750°C, turn off the flame of the burner, turn on the electromagnetic stirrer, put 8% aluminum chips in the furnace into the molten aluminum, and artificially assist the stirring within 5 minutes to melt the aluminum chips.

[0024] After calculation, the melting loss of aluminum shavings in this embodiment is 2.2%.

Embodiment 3

[0028] Embodiment 3——The method for reducing the melting loss of aluminum shavings

[0029] Heat the molten aluminum in the aluminum melting furnace to 740°C, turn off the flame of the burner, turn on the electromagnetic stirrer, put in aluminum chips with 10% of the quality of the molten aluminum in the furnace, and artificially assist the stirring within 5 minutes to melt the aluminum chips.

[0030] After calculation, the melting loss of aluminum shavings in this embodiment is 2.7%.

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Abstract

The invention discloses a method for reducing aluminum scrap melting loss and belongs to the technical field of aluminum scrap recycling, wherein aluminum scraps are poured into an aluminum melting furnace filled with molten aluminum when the aluminum scraps are hot, and the aluminum scraps are stirred until the aluminum scraps are molten, wherein the molten aluminum is heated to 730-760 DEG C before the aluminum scraps are added; and the addition amount of the aluminum scraps does not exceed 10% of the mass of the molten aluminum. According to the method for reducing aluminum scrap melting loss in the invention, the aluminum scraps are molten through molten aluminum heat transfer, so that metal oxidation and volatilization caused by direct heating of flames are avoided, the aluminum slagamount is obviously reduced, and the melting loss is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of recycling aluminum scraps, in particular to a method for reducing the melting loss of aluminum scraps during the recycling of aluminum scraps. Background technique [0002] Melting loss refers to the metal loss in the furnace due to oxidation, volatilization, interaction with the furnace wall, refining agent, and slag removal operations during the smelting process of the alloy. Melting loss will cause metal loss, and the cost of melting loss accounts for about 40-60% of the casting process cost of alloy processing enterprises. Therefore, reducing melting loss is the main direction for alloy processing enterprises to reduce the cost of melting and casting process. [0003] Among them, in aluminum alloy processing enterprises, after the materials pass through equipment such as ingot sawing machines, face milling machines, and plate precision saws, a large amount of debris will be generated, especially in th...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22C1/02
CPCC22B7/00C22C1/026Y02P10/20
Inventor王文兵庞彦国许磊李宏志梁新华
OwnerGUANGXI LIUZHOU YINHAI ALUMINUM IND