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Preparation method of spherical electroplating-level copper oxide powder

An electroplating grade copper oxide, spherical technology, applied in copper oxide/copper hydroxide and other directions, can solve the problems of insufficient dissolution of copper oxide powder, slow dissolution rate, waste of materials, etc., to achieve good dispersion, stable product performance, reduce cost effect

Inactive Publication Date: 2013-09-18
东又悦(苏州)电子科技新材料有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The copper oxide powder prepared by the above method is a kind of irregular powder particles. When electroplating, the copper oxide powder is easy to form bridging phenomenon in the electroplating solution, resulting in slow dissolution rate and the need for manual regular cleaning. Disadvantages such as powder can not be fully dissolved so as to waste materials

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  • Preparation method of spherical electroplating-level copper oxide powder

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Embodiment 1

[0024] A preparation method of spherical electroplating grade copper oxide powder, specifically comprising the following steps:

[0025] (1) Add 255kg of ultrapure water and 127.5kg of powdered copper sulfate pentahydrate into a 500L reaction kettle, then heat to 70°C and stir to fully dissolve to prepare a copper sulfate solution;

[0026] (2) The copper sulfate solution is injected into the atomization tower through the high-pressure atomization nozzle with retractable structure nozzle 1, and the high-pressure atomization nozzle is as figure 2 As shown, the spherical copper sulfate crystal droplet is obtained after being atomized by a high-pressure gas with a gas pressure of 4 kg;

[0027] (3) Spherical copper sulfate crystal droplets are naturally cooled in the atomization tower and directly enter the 3000L reaction kettle with 1700L sodium carbonate aqueous solution, and stir. The reaction temperature is controlled at 75°C, and all the materials in the spray tower enter t...

Embodiment 2

[0031] A preparation method of spherical electroplating grade copper oxide powder, specifically comprising the following steps:

[0032] (1) Add 700kg of ultrapure water and 280kg of powdered copper sulfate pentahydrate into a 1500L reactor, then heat to 70°C and stir to fully dissolve to prepare a copper sulfate solution;

[0033] (2) The copper sulfate solution is injected into the atomization tower through the high-pressure atomization nozzle with retractable structure nozzle 1, and the high-pressure atomization nozzle is as figure 2 As shown, the spherical copper sulfate crystal droplet is obtained after being atomized by a high-pressure gas with a gas pressure of 5 kg;

[0034] (3) Spherical copper sulfate crystal droplets are naturally cooled in the atomization tower and directly enter the 5000L reaction kettle with 2800L sodium carbonate aqueous solution, and stir. The reaction temperature is controlled at 65°C, and all the materials in the spray tower enter the reacti...

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Abstract

The invention relates to a preparation method of spherical electroplating-level copper oxide powder. The preparation method comprises the preparation steps of: (1) dissolving powdered copper sulfate pentahydrate into super-pure water to prepare a copper sulfate solution; (2) carrying out gas atomization on the copper sulfate solution to form spherical copper sulfate crystal drops; (3) naturally cooling the spherical copper sulfate crystal drops and then directly flowing in a reaction kettle containing a sodium carbonate aqueous solution, controlling the reaction temperature to range from 50 DEG C to 80 DEG C, and reacting for 10min to 20min under the stirring state; (4) filtering, washing and drying reacted materials to obtain spherical basic copper carbonate crystals; and (5) transferring the spherical basic copper carbonate crystals into a calcining furnace for calcining to prepare spherical electroplating-level copper oxide powder. The prepared copper oxide powder is irregularly spherical micro-fine powder, large in specific surface area, good in dispersity, and has the advantages of being high in purity and stable in product performance, and when being applied in electroplating technique, the copper oxide powder can be fast dissolved sufficiently in the electroplating dissolved solution.

Description

technical field [0001] The invention relates to a gas atomization chemical reaction technology, in particular to a method for preparing spherical electroplating-grade copper oxide powder by a gas atomization method. Background technique [0002] At present, the copper oxide powder used in the electroplating process needs to have higher requirements, such as requiring that the copper oxide powder can be quickly dissolved in the electroplating solution and has stable performance. [0003] The traditional process of preparing electroplating grade copper oxide powder mainly includes the following steps: (1) drop or put sodium carbonate solution into copper sulfate solution or copper sulfate powder, and the reacted product is filtered, washed and dried to obtain basic carbonate Copper (amorphous irregular crystal particles); (2) Put the basic copper carbonate prepared above in a rotary furnace and heat it to a temperature of 450°C to 600°C for calcination and grinding to obta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02
Inventor 刘东杰刘嘉蕙
Owner 东又悦(苏州)电子科技新材料有限公司
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