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Preparation method of electroplating-grade copper sulfate

A copper sulfate, electroplating-grade technology, applied in copper sulfate and other directions, can solve the problems of high impurity content of copper sulfate, affecting product quality, etc., and achieve the effects of simple and easy preparation method, improved product quality, and low processing cost.

Active Publication Date: 2013-03-13
深圳市宝安东江环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the impurity content of the copper sulfate obtained by production is relatively high, which directly affects the quality of the product

Method used

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  • Preparation method of electroplating-grade copper sulfate
  • Preparation method of electroplating-grade copper sulfate
  • Preparation method of electroplating-grade copper sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The industrial-grade copper oxide in this example comes from an environmental protection company and mainly exists in the form of solid powder. Among them, the copper content of industrial grade copper oxide is 58%, the chlorine content is 0.11%, and the moisture content is 22%.

[0031] Adopt above-mentioned industrial grade copper oxide to prepare the step of industrial grade electroplating copper sulfate as follows, as figure 1 Shown:

[0032] Step Ⅰ: Put 3.5m 3 Tap water was added to the acidification tank, the stirring device was turned on, and 1 t of industrial grade copper oxide was added for mixing and beating, and the reaction was carried out for 10 minutes to obtain a mixed slurry. Dilute and beat industrial copper oxide with tap water, which helps to clean chloride ions and other impurities on the surface of copper oxide, and further makes the acidification reaction more complete.

[0033] Step Ⅱ: First, turn on the exhaust gas absorption system of the aci...

Embodiment 2

[0050] The main component content (mass fraction) of the industrial-grade copper oxide in this embodiment is: copper content 58.38%, chlorine content 0.09%, moisture content 24.37%.

[0051] In this example, the difference from Example 1 is that 3.7m of tap water was added successively in step I 3 , 1t of industrial-grade copper oxide, forming a mass ratio of tap water to industrial-grade copper oxide of 3.7:1.

[0052] In step II, add 98% industrial-grade concentrated sulfuric acid for acidification, adjust the pH of the mixed slurry to 1.4, and maintain the stirring reaction time for 2.5 hours to form a mixed system.

[0053] The pH of the mixed system after the acid supplementation treatment in step III is adjusted to 0.5.

[0054] Refer to Example 1 for the rest of the steps.

[0055] The test indicators of the product after the test are as follows:

[0056] Table 2 Testing indicators of electroplating grade copper sulfate products

[0057]

[0058] As can be known ...

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Abstract

The invention relates to a preparation method of electroplating-grade copper sulfate. The preparation method comprises the following steps: step I: mixing water with industrial-grade copper oxide according to the weight ratio of 3.4-3.7: 1 and beating to form mixed slurry; step II: adding acid liquor into the mixed slurry for acidification; regulating the pH of the mixed slurry to 1-2, and stirring and reacting for 1.5-3h to form a mixed system; step III: adding the acid liquor to regulate the pH of the mixed system to below 1, and cooling and crystallizing the mixed system; and step IV: performing solid-liquid separation on the mixed system to get a copper sulfate crystal. The preparation method disclosed by the invention has the advantages of simplicity and easiness in operation and low treatment cost; and produced electroplating-grade copper sulfate is very low content of impurities, is completely in line with a national standard, can be suitable for market demands and further has higher economic benefits.

Description

technical field [0001] The invention relates to a copper salt production process, in particular to a new process for the production of electroplating-grade copper sulfate. Background technique [0002] In our country, there are many production methods of copper sulfate, and the sources are relatively wide, but most of the production is still obtained by recycling by-products, or using waste copper acid treatment. Therefore, for now, the production of copper sulfate products is still dominated by rough processing, mainly producing agricultural grade and industrial grade copper sulfate. [0003] At present, the raw materials for copper sulfate production mainly include waste electrolyte, waste copper, printed circuit board etching waste liquid, copper ore, copper smelting soot and waste residue produced by copper electrolytic refining. The general methods of copper sulfate production mainly include ammonia leaching method, catalytic oxidation method, acid-base neutralization ...

Claims

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Application Information

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IPC IPC(8): C01G3/10
Inventor 刁伟华胡春林余雅旋李双春
Owner 深圳市宝安东江环保技术有限公司
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