Composite iron-removing technology of secondary aluminum

A recycled aluminum and process technology, which is applied in the field of aluminum alloy production, can solve problems such as slag inclusions, complex sources of raw materials for waste aluminum regeneration, and loose aluminum alloy ingots, so as to save energy, meet sustainable development, and reduce production costs. Effect

Inactive Publication Date: 2013-08-21
SHANDONG INNOVATION METAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The world's recycled aluminum accounts for 45% of the total demand in the aluminum market. The sources of raw materials for scrap aluminum recycling are complex and diverse, and a certain amount of inclusions will inevitably be

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0016] A composite iron removal process for recycled aluminum of the present invention is to add borax (Na 2 B 4 o 7 ).

[0017] Add borax with a mass fraction of 0.5% to the recycled aluminum-silicon alloy melt, react at a temperature of 600 degrees, and react for 15 minutes, and the iron removal rate reaches 48.8%.

Embodiment 2

[0019] A composite iron removal process for recycled aluminum of the present invention is to add borax (Na 2 B 4 o 7 ).

[0020] Add borax with a mass fraction of 0.1% to the recycled aluminum-silicon alloy melt, react at a temperature of 700 degrees, and react for 5 minutes, and the iron removal rate reaches 48.2%.

Embodiment 3

[0022] A composite iron removal process for recycled aluminum of the present invention is to add borax (Na 2 B 4 o 7 ).

[0023] Add borax with a mass fraction of 1% to the recycled aluminum-silicon alloy melt, the reaction temperature is 800 degrees, and the reaction is 7 minutes, and the iron removal rate reaches 48.5%.

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PUM

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Abstract

The invention discloses a composite iron-removing technology of secondary aluminum, which is mainly applied to removing iron from aluminum-silicon alloy. At least one of borax and manganese chloride is added in silicon alloy melt of secondary aluminum in the iron-removing technology. The iron removal rate can reach up to 49%; and meanwhile, an alloy of aluminum, iron and manganese can be further generated, so that the energy resource can be greatly saved, the production cost of aluminum alloy products is reduced, and the technology meets the requirement of sustainable development in aluminum industry.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy production, in particular to a recycled aluminum composite iron removal process. Background technique [0002] Recycled aluminum is an indispensable resource for the sustainable development of the aluminum industry. Compared with primary aluminum production, each ton of recycled aluminum can save up to 95% of energy, CO 2 The harmful emissions such as aluminum alloy are greatly reduced, which not only saves energy and purifies the environment, but also greatly reduces the production cost of aluminum alloy products, which has good social and economic benefits. The world's recycled aluminum accounts for 45% of the total demand in the aluminum market. The sources of raw materials for scrap aluminum recycling are complex and diverse, and a certain amount of inclusions will inevitably be brought in, especially the relatively high content of iron, which will easily lead to the failure of aluminum...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C1/06C22C21/02
Inventor 崔立新赵晓光刘科吕涛
Owner SHANDONG INNOVATION METAL TECH
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