A kind of production method of high-purity nickel

A production method and high-purity technology, applied in photography technology, equipment, photography auxiliary technology, etc., can solve problems that affect product purity and process complexity, and achieve the effects of facilitating deformation processing, improving hydrogen embrittlement performance, and ensuring stability

Inactive Publication Date: 2011-12-07
苏州晶纯新材料有限公司
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Problems solved by technology

The disadvantage of this method is that the process is relatively complicated, and special continuous production equipment needs to be designed to increase the product output. At the same time, the electrolysis part of the last step may bring other impurities to the electrolyte and affect the purity of the product.

Method used

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  • A kind of production method of high-purity nickel

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with specific embodiments, but the present invention is not limited to the following embodiments.

[0018] The method for producing high-purity nickel according to this embodiment includes the following steps:

[0019] (1) Dissolve industrial grade NiSO with deionized water 4 ·6H 2 O, to prepare NiSO with a nickel concentration of 60g / L 4 Solution, then add H 2 SO 4 Adjust NiSO 4 The pH of the solution is 3.

[0020] (2), NiSO 4 The solution was filtered sequentially with Diphonix resin and M-4195 resin, and then adsorbed with activated carbon.

[0021] (3) NiSO after step (2) treatment 4 The solution enters the electrolytic cell for electrolysis, and the electrolysis cathode current density is 150A / m 2 , The temperature of the electrolyte is kept at 80℃, and the electrolyte circulates between the electrolytic cell-Diphonix resin-M-4195 resin-activated carbon-the electr...

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Abstract

The invention discloses a method for producing high-purity nickel. In the method, a nickel-containing salt solution is used as an electrolyte and is subjected to electrolysis to obtain nickel, before electrolysis, pretreatment is carried out to remove impurity elements in the electrolyte, and pretreatment refers to that the electrolyte is subjected to adsorption through ion exchange resins and activated carbon, wherein the ion exchange resins at least comprise Diphonix resins and M-4195 resins; during electrolysis, the electrolyte is continuously circulated in a link from an electrolyzer to ion exchange resins to activated carbon to the electrolyzer; and after electrolysis, nickel obtained by electrolysis is subjected to vacuum degassing in advance and then vacuum melting to obtain a high-purity nickel ingot. The method for producing high-purity nickel is simple in process and easy to operate, the obtained nickel has the purity over 99.999%, and a nickel product is stable in quality.

Description

technical field [0001] The invention relates to a production method of high-purity nickel. Background technique [0002] High-purity metal is a comprehensive product of modern high-tech. As early as the 1930s, the name "high-purity substance" appeared. The important agenda for the research on high-purity metal was after World War II. The first series of The development and production of high-purity metals is due to the needs of atomic energy, and semiconductor materials such as germanium and silicon contain extremely small amounts of harmful impurities such as group III and group V elements, alkali metals, and heavy metals, which seriously affect the electrical properties of semiconductor devices. Therefore, measures are urgently needed to increase its purity as much as possible. Since the early 1950s, with the emergence of new methods for the preparation of high-purity metals, the purity of many metals has been raised to an unprecedented level, and the research and product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/08C25C7/06
Inventor 钟小亮王广欣王树森
Owner 苏州晶纯新材料有限公司
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