Metal recycling process and recycling device for waste abs plastic electroplating parts

A technology of ABS plastic and electroplating parts, which is applied in the field of waste resource recycling technology, can solve the problem of low application value of copper sulfide, and achieve the effect of increasing application value, reducing production cost, and improving utilization rate

Active Publication Date: 2019-02-22
温州科锐环境资源利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of operation causes copper to exist in two forms of basic copper sulfate and copper sulfide, and the copper sulfide has less application value and needs to be improved

Method used

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  • Metal recycling process and recycling device for waste abs plastic electroplating parts
  • Metal recycling process and recycling device for waste abs plastic electroplating parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A metal recycling process for waste ABS plastic electroplating parts, comprising the steps of:

[0043] Step1: Crushing waste ABS plastic electroplating parts;

[0044] Step2: Add mixed acid to the broken waste ABS plastic electroplating parts, pass air to react for 3 hours, choose to pass hot air or direct air according to the reaction temperature to control the reaction temperature at 60 ° C, according to the weight ratio, waste ABS plastic electroplating parts : mixed acid=2: 3, mixed acid comprises hydrochloric acid and sulfuric acid, the massfraction of hydrochloric acid is 5%, the massfraction of sulfuric acid is 15%, and hydrochloric acid and sulfuric acid mass ratio are 1: 1;

[0045] Step3: After the reaction is over, press filter to obtain the copper-nickel mixture, add an organic extractant to the copper-nickel mixture, and separate;

[0046] Step4: The organic phase is back-extracted with sulfuric acid with a mass fraction of 40%, and cathode copper is form...

Embodiment 2

[0050] A metal recycling process for waste ABS plastic electroplating parts, comprising the steps of:

[0051] Step1: Crushing waste ABS plastic electroplating parts;

[0052] Step2: Add mixed acid to the broken waste ABS plastic electroplating parts, and pass air to react for 4 hours. According to the reaction temperature, choose to pass hot air or direct air to control the reaction temperature to 62 ° C. According to the weight ratio, waste ABS plastic electroplating parts : mixed acid=2:3, mixed acid comprises hydrochloric acid and sulfuric acid, the massfraction of hydrochloric acid is 8%, the massfraction of sulfuric acid is 10%, and the mass ratio of hydrochloric acid and sulfuric acid is 1:1;

[0053] Step3: After the reaction is over, press filter to obtain the copper-nickel mixture, add an organic extractant to the copper-nickel mixture, and separate;

[0054] Step4: The organic phase is back-extracted with sulfuric acid with a mass fraction of 40%, and cathode coppe...

Embodiment 3

[0058] A metal recycling process for waste ABS plastic electroplating parts, comprising the steps of:

[0059] Step1: Crushing waste ABS plastic electroplating parts;

[0060] Step2: Add mixed acid to the broken waste ABS plastic electroplating parts, and pass air to react for 3 hours. According to the reaction temperature, choose to pass hot air or direct air to control the reaction temperature to 64 ° C. According to the weight ratio, waste ABS plastic electroplating parts : mixed acid=2:3, mixed acid comprises hydrochloric acid and sulfuric acid, the massfraction of hydrochloric acid is 10%, the massfraction of sulfuric acid is 12%, and the mass ratio of hydrochloric acid and sulfuric acid is 1:1;

[0061] Step3: After the reaction is over, press filter to obtain the copper-nickel mixture, add an organic extractant to the copper-nickel mixture, and separate;

[0062] Step4: The organic phase is back-extracted with sulfuric acid with a mass fraction of 40%, and cathode copp...

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PUM

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Abstract

The invention discloses a metal recycling process and a recycling device for waste ABS plastic electroplated parts. The metal recycling process of waste ABS plastic electroplating parts includes the following steps: Step1: crush waste ABS plastic electroplating parts; Step2: add mixed acid to the waste ABS plastic electroplating parts after crushing, and feed air to react; Step3: After the reaction, Press filtration to obtain the copper-nickel mixed solution, add an organic extractant to the copper-nickel mixed solution, and separate; Step4: The organic phase is back-extracted with sulfuric acid, and the stripped solution is electrowinning to form cathode copper, and the water phase is adjusted to pH 6 with slaked lime. Nickel hydroxide was obtained by filtration, and dried under pressure filtration. The beneficial effects of the invention are: the process can concentrate copper into metal copper under the premise of realizing the separation of copper and nickel, and improve the application value of copper.

Description

technical field [0001] The invention relates to a waste resource recovery process, in particular to a metal recovery process and a recovery device for waste ABS plastic electroplated parts. Background technique [0002] With the substantial increase in my country's automobile sales, the amount of scrapped vehicles is also increasing year by year. And scrapped cars contain a lot of ABS plastic plating parts. Compared with ordinary plastics, these ABS plastic electroplating parts also contain a large amount of metal, which is more serious to environmental pollution. Therefore, it is of great research significance to realize the harmless treatment and recycling of ABS plastic electroplating parts. [0003] The Chinese patent with publication number CN101096428 discloses a method for catalytically separating plastic coatings with mixed acid air. In the method, ammonia is used to adjust the pH step by step, so that copper and nickel are successively precipitated to realize the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B3/40C22B15/00C22B23/00C25C1/12C25C7/00
CPCC22B7/007C22B15/0069C22B15/0071C22B23/0423C22B23/043C22B23/0461C25C1/12C25C7/00C22B3/402Y02P10/20
Inventor 余继芬
Owner 温州科锐环境资源利用有限公司
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