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Aluminum and aluminum alloy production method

A production method and aluminum alloy technology, which is applied in the field of aluminum and aluminum alloy production, can solve unsatisfactory problems and achieve the effects of improving purity, reducing energy consumption, and avoiding external force damage

Inactive Publication Date: 2018-01-19
青海高原有色金属研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the furnace refining technology is still not ideal for solving the problem of melt cleanliness, which has always troubled casting technicians

Method used

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  • Aluminum and aluminum alloy production method
  • Aluminum and aluminum alloy production method
  • Aluminum and aluminum alloy production method

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Experimental program
Comparison scheme
Effect test

Embodiment

[0043] The production method of aluminum and aluminum alloy provided in this embodiment, it comprises:

[0044] 1. Alkali removal treatment

[0045] The chlorine-free refining technology is used to fill the aluminum melt to be purified with a mixture of refining agent and inert gas to remove alkali metals, alkaline earth metals and gases in the aluminum melt.

[0046] Wherein, the aluminum melt is electrolytic aluminum liquid. Of course, in other embodiments, the aluminum alloy solution can also be electrolyzed.

[0047] Among them, the refining agent is AlF 3 , the inert gas is argon (Ar).

[0048] AlF 3 As a refining agent, it absorbs, dissolves and chemically reacts with the oxide film and non-metallic inclusions in the melt to achieve the effect of removing impurities such as alkali metals and alkaline earth metals.

[0049] The hydrogen partial pressure difference of the high-purity inert gas in the aluminum melt makes the hydrogen atoms diffuse into the inert gas bubb...

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Abstract

The invention provides an aluminum and aluminum alloy production method, and relates to the technical field of aluminum and aluminum alloy production. According to the aluminum and aluminum alloy production method, before aluminum melt enters a smelting furnace to be molten, purification treatment on the aluminum melt is carried out, the purity of the aluminum melt entering the furnace is improved, the number of times of refining, stirring and slagging-off in the smelting furnace is decreased, the process time is shortened, energy consumption is reduced, and the equipment maintaining cost of aslagging-off vehicle and the smelting furnace is reduced. Furnace wall hanging slag and furnace bottom accumulated slag of the smelting furnace are reduced. The conditions of original frequent slagging-off vehicle slagging-off and cold and heat furnace cleaning are reduced, external force damage borne by lining materials in the furnace body during mechanical furnace cleaning is greatly avoided, and the service life of the furnace body is prolonged.

Description

technical field [0001] The invention relates to the technical field of aluminum and aluminum alloy production, in particular to a production method of aluminum and aluminum alloy. Background technique [0002] Aluminum and aluminum alloy melting and casting use electrolytic aluminum liquid (or aluminum ingot), returned waste, and intermediate alloy as the main raw materials to form products with different shapes after melting, heat preservation, refining, and casting, such as flat ingots, round ingots, cast-rolled Volume etc. [0003] Due to the characteristics of high temperature, high hydrogen content and high slag content of electrolytic aluminum liquid, the purification process of molten aluminum liquid is particularly important, which is directly related to the quality of casting products. The technology currently used in China focuses on two aspects: purification in the melting furnace and on-line casting processing, that is, pouring the electrolytic aluminum liquid i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B21/06C22C1/06C22C1/02
Inventor 董江庆毅郭镇华庄景巍颜奇辉肖毅鹏张林张瑞敏郑李媛黎强龙江王旭升郑小斌潘志伟魏永胜袁利烨张薇
Owner 青海高原有色金属研发有限公司
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