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Method for physically separating aluminum metal from metal mixture

A metal mixture and physical separation technology, applied in the direction of improving process efficiency, can solve the problems of increased recycling cost, low economic value, environmental pollution, etc., and achieve the effect of high recycling rate and high degree of resource utilization

Active Publication Date: 2017-10-24
上海珮钧科技有限公司
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Problems solved by technology

This process will not only increase recycling costs, but also turn precious aluminum alloy resources into aluminum salts with low economic value. In addition, acid-base treatment also creates wastewater treatment problems and brings environmental pollution.

Method used

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  • Method for physically separating aluminum metal from metal mixture

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Embodiment 1

[0023] refer to figure 1 The process flow of a method for physically separating aluminum metal from a metal mixture provided in this embodiment is as follows:

[0024] Firstly, the metal mixture containing aluminum metal is mixed with light materials, and the surface specific gravity of aluminum metal is reduced by mixing with light materials, and then the specific gravity is sorted; here, the light material is oil, and the specific gravity sorting is selected Lithium bromide saturated solution, because the specific gravity of lithium bromide solution is greater than the average specific gravity of aluminum metal and light material after mixing, so aluminum metal and light material float in lithium bromide saturated solution, while the rest of the metal sinks, so that aluminum metal and light material The light material is separated from the rest of the metal; then the aluminum metal and the light material are cleaned to obtain the aluminum metal and the rest of the metal; the...

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Abstract

The invention discloses a method for physically separating aluminum metal from a metal mixture. The metal mixture at least contains aluminum metal which is elemental aluminum or / and aluminum alloy; and the method comprises the steps: firstly, mixing the metal mixture with a material of which the specific gravity is smaller than that of the aluminum metal; and then, placing the mixture into a liquid to ensure that the aluminum metal floats on the surface of the liquid and the rest of metal sinks into the liquid so as to realize the separation of the aluminum metal. The method can be used for realizing high-purity safe recycle of the aluminum metal in the metal mixture, cannot generate pollutant discharges in the whole recycle process and is not only high in resource recycling rate, but also environment-friendly and pollution-free.

Description

[0001] technology field [0002] The invention relates to a method for physically separating aluminum metal from a metal mixture, and belongs to the technical field of metal recovery. Background technique [0003] Now with the continuous improvement of people's living standards, the amount of scrap metal is also increasing, such as a large number of scrap circuit boards will be produced in the dismantling of waste home appliances. Now use the method of physical crushing to crush the waste circuit boards first, then separate the resin powder from other metals through air separation, and then separate iron and nickel from other non-ferrous metals by magnetic separation to obtain non-ferrous metal particles mixture. However, the non-ferrous metal particle mixture contains a large amount of aluminum metal. Since the chemical properties of aluminum metal are more active than other non-ferrous metals in the non-ferrous metal particle mixture, the recovery of non-ferrous metal incre...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B21/00
CPCC22B7/005C22B21/0069Y02P10/20
Inventor 王武生
Owner 上海珮钧科技有限公司
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