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Disposal method of electrolysis copper powder waste liquid and application thereof

A technology of electrolytic copper powder and treatment method, which is applied in the fields of metallurgical wastewater treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of affecting the environment, waste of resources, etc.

Active Publication Date: 2009-11-04
CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing treatment methods often use lime to directly precipitate and filter, and the filter residue is treated cheaply, which not only causes a lot of waste of resources, but also affects the environment

Method used

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  • Disposal method of electrolysis copper powder waste liquid and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: a kind of treatment method of electrolytic copper powder waste liquid, its steps are as follows successively:

[0048] a. Use liquid caustic soda to adjust the pH value of the above-mentioned electrolytic copper powder waste liquid to 8, and then make the polymer flocculant polyacrylamide into a polyacrylamide solution with a concentration of 0.15% by weight, and then add it to the above-mentioned electrolytic copper powder waste In the liquid, the amount added is 0.12 kg per ton of waste liquid, stirred for 30 to 60 minutes, then allowed to stand for 20 minutes, and the precipitate is filtered and separated;

[0049] b. Put the separated filter residue at a temperature of 590-610°C and 25m 3 After roasting for 8 hours under the blast volume of / min, crush it into materials with a particle size of less than 80 meshes with a mill;

[0050] c. Add the above materials into a sulfuric acid solution with a concentration of 300 g / L and heat to dissolve them, th...

Embodiment 2

[0065] Embodiment 2: a kind of treatment method of electrolytic copper powder waste liquid, its sequence of steps is the same as embodiment 1; Wherein:

[0066] Regulate above-mentioned electrolytic copper powder waste liquid pH value with liquid caustic soda in a step to be 10, the weight percent concentration of the polymer flocculant polyacrylamide solution of preparation is 0.20%, and its addition adds 0.15 kilogram by every ton of waste liquid;

[0067] Roasting time is 10 hours in the b step;

[0068] The sulfuric acid solution concentration that adds in the c step is 400 grams per liter, and its add-on is by broken material: sulfuric acid solution=1.2 kilograms: 5 liters;

[0069] The concentration of sulfuric acid solution added in the e step is 80 grams per liter, and its add-on is by broken material: sulfuric acid solution=600 grams: 1 liter;

[0070] The concentration of sulfuric acid solution added in the g step is 6.0 grams per liter, and its add-on is by broken ...

Embodiment 3

[0078] Embodiment 3: a kind of treatment method of electrolytic copper powder waste liquid, its sequence of steps is the same as embodiment 1; Wherein:

[0079] Regulate above-mentioned electrolytic copper powder waste liquid PH value with liquid caustic soda in a step to be 9, the weight percent concentration of the macromolecular flocculant polyacrylamide solution of preparation is 0.18%, and its addition adds 0.14 kilogram by every ton of waste liquid;

[0080] Roasting time is 9 hours in the b step;

[0081] The sulfuric acid solution concentration that adds in the c step is 350 grams per liter, and its add-on is by broken material: sulfuric acid solution=1.1 kilogram: 4 liters;

[0082] The concentration of sulfuric acid solution added in the e step is 75 grams per liter, and its add-on is by broken material: sulfuric acid solution=580 grams: 1 liter;

[0083] The concentration of sulfuric acid solution added in the g step is 4.5 grams per liter, and its add-on is by bro...

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Abstract

The invention provides a disposal method of electrolysis copper powder waste liquid. The disposal method is characterized in that the electrolysis copper powder waste liquid orderly undergoes the disposals of precipitation separation, roasting oxidization and twice purification crystallization; and then the disposed copper-containing waste liquid is added with reducing iron powder for chemical replacement reaction so as to obtain copper immersion plate powder formed on the surface of the reducing iron powder. The disposal method achieves the aim of fully utilizing resources, saving energy, reducing exhaustion, consumption and production cost and causing no harm to human bodies or pollution to the environment, and fully meets the requirement of taking a new road to industrialization and realizing sustainable development.

Description

technical field [0001] The invention relates to a treatment method of electrolytic copper powder waste liquid and its recycling application, in particular to a treatment method of electrolytic copper powder waste liquid and its recovery and application of the treated copper-containing waste liquid to powder metallurgy production. Background technique [0002] Due to the production process of electrolytic copper powder, some copper-containing waste liquid will gradually be produced during the electrolytic production process. Because it contains Ni, Sn, Zn, Al, Si and other impurities, it will affect the product quality and cannot be returned to the production system. The existing treatment methods often use lime to directly precipitate and filter, and the filter residue is treated cheaply, which not only causes a great waste of resources, but also affects the environment. Contents of the invention [0003] The object of the present invention is to provide a treatment method...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/52C02F1/72C02F103/16
Inventor 王绪其陈林孟庆芳曾明军
Owner CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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