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Treatment method and application of electrolytic copper powder waste liquid

A technology of electrolytic copper powder and treatment methods, applied in metallurgical wastewater treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., capable of solving problems such as impacting the environment and wasting resources

Active Publication Date: 2011-11-30
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: a kind of treatment method of electrolytic copper powder waste liquid, its steps are as follows successively:

[0049] a. Use liquid caustic soda to adjust the pH value of the above electrolytic copper powder waste liquid to 8, then prepare the polymer flocculant polyacrylamide into a polyacrylamide solution with a concentration of 0.15% by weight, and then add it to the above 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;

[0050] b. Put the separated filter residue at the temperature of 590~610oC and 25 m 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;

[0051] c. Add the above materials into a sulfuric acid solution with a concentration of 300 g / L and heat to dissolve them, then continue to hea...

Embodiment 2

[0066] Embodiment 2: a kind of treatment method of electrolytic copper powder waste liquid, its sequence of steps is the same as embodiment 1; Wherein:

[0067] 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 macromolecule flocculant polyacrylamide solution of preparation is 0.20%, and its addition adds 0.15 kilogram by every ton of waste liquid;

[0068] Roasting time is 10 hours in the b step;

[0069] 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;

[0070] The sulfuric acid solution concentration that adds in the e step is 80 grams per liter, and its add-on is by broken material: sulfuric acid solution=600 grams: 1 liter;

[0071] The concentration of the sulfuric acid solution added in the g step is 6.0 grams per liter, and its addition ...

Embodiment 3

[0079] Embodiment 3: a kind of treatment method of electrolytic copper powder waste liquid, its sequence of steps is the same as embodiment 1; Wherein:

[0080] Regulate above-mentioned electrolytic copper powder waste liquid pH value with liquid caustic soda in a step and be 9, the weight percent concentration of the macromolecule flocculant polyacrylamide solution of preparation is 0.18%, and its addition adds 0.14 kilogram by every ton of waste liquid;

[0081] Roasting time is 9 hours in the b step;

[0082] 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;

[0083] 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;

[0084] 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 treatment method for electrolytic copper powder waste liquid, which is characterized in that: the electrolytic copper powder waste liquid is sequentially subjected to treatment including precipitation separation, roasting oxidation and twice purification and crystallization; Adding reduced iron powder to the final copper-containing waste liquid for chemical replacement reaction to obtain copper immersion plating powder that forms a copper coating layer on the surface of the reduced iron powder. The invention achieves the purposes of fully utilizing resources, saving energy, reducing emissions, reducing production costs, not harming the human body and not polluting the environment, and fully meets the needs of taking a new industrialization road and sustainable development.

Description

[0001] This application is a divisional application of the patent application with the application number 200810069599.9, the application date is April 28, 2008, and the invention title is "the treatment method and application of electrolytic copper powder waste liquid". technical field [0002] 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 [0003] 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 u...

Claims

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Application Information

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