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Separation method of copper-nickel alloy and application

A copper-nickel alloy and separation method technology, which is applied to the improvement of process efficiency, photography process, electrodes, etc., can solve the problems of small application range of ion exchange method, inability to obtain elemental copper, and complicated vulcanization process, and achieves energy consumption cost. Low cost, low cost and high raw material recovery

Inactive Publication Date: 2019-05-03
GUANGDONG JIANA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the three can realize the separation of copper and nickel in the alloy, the solvent extraction method is expensive because it uses an organic solvent for extraction, and it is easy to cause environmental pollution; The range is small, the concentration of the solution used is low, and subsequent evaporation and concentration are required, resulting in high energy consumption

Method used

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  • Separation method of copper-nickel alloy and application

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Embodiment 1

[0076] The present embodiment provides a kind of separation method of copper-nickel alloy, comprises the following steps:

[0077] The nickel-copper alloy metal is placed in a titanium anode basket as the anode, the pure copper rod is used as the cathode, the cathode surface area is 5% of the anode surface area, and the sulfuric acid solution with a total acid concentration of 150g / L is used as the electrolyte, and the electrolyte is circulated. The cathode and anode are placed in the electrolytic cell for normal temperature electrolysis, the distance between different poles is controlled to be 30mm, the circulation flow rate is 1.2m3 / h, the cell voltage is adjusted to 0.8V, and the cathode current density is 1000A / m2. When electrifying for 38 hours, turn off the DC power supply and the electrolyte circulation pump to complete the separation of nickel and copper.

Embodiment 2

[0079] The present embodiment provides a kind of separation method of copper-nickel alloy, comprises the following steps:

[0080] The nickel-copper alloy metal is placed in a titanium anode basket as the anode, the pure copper rod is used as the cathode, the cathode surface area is 6% of the anode surface area, and the sulfuric acid solution with a total acid concentration of 160g / L is used as the electrolyte, and the electrolyte is circulated. The cathode and anode are placed in the electrolytic cell for normal temperature electrolysis, the distance between different poles is controlled to be 30mm, the circulation flow rate is 1.2m3 / h, the cell voltage is adjusted to 1.32V, and the cathode current density is 2700A / m2. When electrifying for 16 hours, turn off the DC power supply and the electrolyte circulation pump to complete the separation of nickel and copper.

Embodiment 3

[0082] The present embodiment provides a kind of separation method of copper-nickel alloy, comprises the following steps:

[0083] The nickel-copper alloy metal is placed in a titanium anode basket as the anode, the pure copper rod is used as the cathode, the cathode surface area is 7% of the anode surface area, and the sulfuric acid solution with a total acid concentration of 170g / L is used as the electrolyte, and the electrolyte is circulated. The cathode and anode are placed in the electrolytic cell for normal temperature electrolysis, the distance between different electrodes is controlled to be 30mm, the circulation flow rate is 1.2m3 / h, the cell voltage is adjusted to 1.62V, and the cathode current density is 3500A / m2. When electrifying for 13 hours, turn off the DC power supply and the electrolyte circulation pump to complete the separation of nickel and copper.

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Abstract

The invention provides a separation method of a copper-nickel alloy and application, and relates to the technical field of alloy separation. The separation method of the copper-nickel alloy comprisesthe following steps: the copper-nickel alloy is placed in an inert material to serve as an anode, a conductive material serves as a cathode, an acidic solution serves as an electrolyte, electrolysis is conducted, thus copper is precipitated on the cathode, and nickel is dissolved in the electrolyte, wherein the superficial area of the cathode is 3-8% that of the anode. The separation method is easy to operate, low in energy consumption, free of pollution and introduction of other impurities, high in current efficiency, high in recovery rate of raw materials and high in product purity, and thetechnical problems that as for traditional copper-nickel alloy separation, pollution is large, the cost is high, and a process is tedious can be relieved. The copper separated through the separation method of the copper-nickel alloy is high in purity and low in cost, and can serve as a raw material to be applied to the field of electrical appliances.

Description

technical field [0001] The invention relates to the technical field of alloy separation, in particular to a copper-nickel alloy separation method and its application. Background technique [0002] At present, with the continuous development and progress of the metallurgical industry, a large amount of metal alloy wastes are produced. These wastes contain high-value metal resources, and it is particularly important to separate and recycle them. [0003] Copper-nickel alloy, also known as cupronickel, is a commonly used alloy. Because of its excellent corrosion resistance, it is easy to shape, process and weld. It is widely used in shipbuilding, petroleum, chemical industry, construction, electric power, precision instruments, medical equipment, musical instruments and other fields. At present, the separation methods of copper-nickel alloy mainly include solvent extraction method, sulfuration method and ion exchange method. Although the three can realize the separation of co...

Claims

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Application Information

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IPC IPC(8): C25C1/12C25C7/02C25C7/06
CPCY02P10/20
Inventor 黄铁熙张颖
Owner GUANGDONG JIANA ENERGY TECH CO LTD
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