Method for producing electrolytic nickel and recovering tin and iron from tin-nickel-iron alloy waste materials

A technology of iron alloy and electrolytic nickel, which is applied in the field of alloy waste recycling, can solve the problems of high price, achieve low loss rate, realize resource utilization, and high separation efficiency

Inactive Publication Date: 2015-05-13
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Both tin and nickel in tin-nickel-iron alloy are non-ferrous metals, which are expensive and widely used. The above three technological processes for treating waste nickel alloys are relatively mature in industry, but they are use

Method used

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  • Method for producing electrolytic nickel and recovering tin and iron from tin-nickel-iron alloy waste materials
  • Method for producing electrolytic nickel and recovering tin and iron from tin-nickel-iron alloy waste materials
  • Method for producing electrolytic nickel and recovering tin and iron from tin-nickel-iron alloy waste materials

Examples

Experimental program
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Example Embodiment

[0051] Example 1

[0052] The raw material of the waste tin-nickel-iron ternary alloy in this embodiment comes from a technical production line of an electronic industry, and the output of the waste is about 100 tons / year, and its composition analysis is shown in Table 1.

[0053] Table 1

[0054] element

[0055] A method for producing electrolytic nickel from tin-nickel-iron alloy waste and recycling tin and iron, the method comprises the steps:

[0056] (1) Electrochemical dissolution

[0057] like figure 2 As shown, the activated carbon fiber bag 1 sewn with activated carbon fiber felt is used as a container, the alloy waste is a soluble anode, a graphite rod 4 is a cathode, a platinized titanium mesh 2 is a contact anode, an anion exchange membrane 3 is used as a diaphragm material, and the anolyte is composed of It is: 1.0mol / L HCl, 1.5mol / L NaCl, catholyte 1.0mol / L HCl, electrolysis voltage 1.5V, electrolysis for 8h, to obtain anolyte containing tin, nicke...

Example Embodiment

[0068] Embodiment 2

[0069] The raw material of the waste tin-nickel-iron ternary alloy in this embodiment comes from a technical production line of an electronic industry, and the output of the waste is about 100 tons / year. The composition analysis is shown in Table 2.

[0070] Table 2

[0071] element

[0072] According to the steps of Example 1, the electrolysis efficiency was 95.5%, the power consumption was 3.26kW·h / kg, and the purity of the nickel powder was 99.13%.

[0073] The XRD diffraction pattern of the cathode deposit of this example is shown in Image 6 , according to the detection method of Example 1, the spectrum at 2θ is 42.9°, 52.1°, 76.9°, and sharp diffraction peaks appear, which are consistent with the characteristic peaks of elemental nickel through computer retrieval, and Ni(OH) does not appear. 2 The characteristic peaks of 22.79°, 33.486°, 34.507°, 38.861°, 60.036°.

[0074] The deposits scraped on the cathode plate were observed by scann...

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Abstract

The invention relates to the technical field of alloy waste material recovery, in particular to a method for producing electrolytic nickel and recovering tin and iron from tin-nickel-iron alloy waste materials. The method comprises the steps of electrochemical dissolution, chemical tin immersion, chemical iron immersion and elemental nickel recovery through electrolysis. The invention provides a new way for the utilization of waste alloys which are difficult to dissolve; by utilizing the electrochemical dissolution method, the effect of clean and efficient dissolution can be realized; a precipitation-goethite method is used for separating the tin and iron in the solution, so that the separation efficiency is high and the loss rate is low; by comprehensively utilizing the precipitate and the filter liquor, the resource utilization of the valuable elements in the alloys can be realized to the greatest extent; the method has relatively remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to the technical field of alloy waste recycling, in particular to a method for producing electrolytic nickel from tin-nickel-iron alloy waste and recovering tin and iron. Background technique [0002] In recent years, there are mainly three types of recycling technologies applied to alloy waste at home and abroad, specifically pyro-refining technology, wet-refining technology and combined pyro-wet method technology. [0003] Pyrorefining technology is mainly to regenerate high-temperature alloy waste by surface treatment and vacuum oxygen blowing decarburization technology (VOD), combined with advanced smelting equipment such as vacuum induction furnace and electroslag furnace, and use non-polluting cleaning to remove slag inclusions by blowing argon and degassing , special slag system to remove inclusions, high-vacuum purification and a series of purification technologies to realize the recycling of superalloy waste. The pyrotech...

Claims

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Application Information

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IPC IPC(8): C25C1/08C22B25/00
CPCC25C1/06C25C1/08C25C1/14Y02P10/20
Inventor 王琪葛明敏于聪王慧慧孙杨铖朱炳龙周全法
Owner JIANGSU UNIV OF TECH
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