Treatment method for stripping ABS (Acrylonitrile Butadiene Styrene) electroplated part

A processing method and technology for electroplating parts, which are applied in the directions of microorganism-based methods, methods of using microorganisms, biochemical equipment and methods, etc., which can solve the problem of low corrosiveness of ABS plastic parts, affecting the quality of plastic parts regeneration, and low metal recovery rate. and other problems, to achieve the effect of low corrosiveness, improved utilization level, and low environmental conditions.

Inactive Publication Date: 2017-06-13
周晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the disadvantages in the prior art that chlorine gas will be produced during the treatment process, causing great harm to the human body and the environment, strong corrosion, low metal recovery rate, incomplete separation, and affecting the quality of plastic parts regeneration, and provides an ABS electroplating parts recycling method. The plating treatment method uses Thiobacillus ferroo

Method used

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  • Treatment method for stripping ABS (Acrylonitrile Butadiene Styrene) electroplated part
  • Treatment method for stripping ABS (Acrylonitrile Butadiene Styrene) electroplated part

Examples

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Effect test

Embodiment 1

[0047] A processing method for deplating ABS electroplated parts includes the following steps:

[0048] (1) Preparation of bacteria liquid:

[0049] (11) Purchase purified Thiobacillus ferrooxidans and select liquid medium A: 10 g peptone, 3 g ammonium sulfate, 0.1 g potassium chloride, 0.5 g potassium dihydrogen phosphate, 0.5 g magnesium sulfate, 0.01 g calcium nitrate , And deionized water, the above medium is configured into 700 ml solution, and sterilized for 15 minutes;

[0050] (12) Add 300 ml of 10% ferrous sulfate heptahydrate solution to the above solution, adjust the pH of the solution to 2, and incubate for 10 days, watch the color of the solution change from light green to brownish red, indicating Fe 2+ Slowly become Fe under the action of bacteria 3+ , Measure Fe in solution 3+ Reach 25g / L.

[0051] (13) Use the above-mentioned cultured bacteria liquid as a strain to expand culture, and select liquid medium B: 20 ​​g / L peptone, 5 g / L sodium chloride, 20 g / L urea, 20 g / L ...

Embodiment 2

[0061] A processing method for deplating ABS electroplated parts includes the following steps:

[0062] (1) Preparation of bacteria liquid:

[0063] (11) Purchase purified Thiobacillus ferrooxidans and select liquid medium A: 10 g peptone, 3 g ammonium sulfate, 0.1 g potassium chloride, 0.5 g potassium dihydrogen phosphate, 0.5 g magnesium sulfate, 0.01 g calcium nitrate , And deionized water, the above medium is configured into 700 ml solution, and sterilized for 15 minutes;

[0064] (12) Add 300 ml of 15% ferrous sulfate heptahydrate solution to the above solution, adjust the pH of the solution to 2, and incubate for 15 days, watch the color of the solution change from light green to brownish red, indicating Fe 2+ Slowly become Fe under the action of bacteria 3+ , Measure Fe in solution 3+ Reach 25g / L.

[0065] (13) Use the above-mentioned cultured bacteria liquid as a strain to expand culture, and select liquid medium B: 20 ​​g / L peptone, 5 g / L sodium chloride, 20 g / L urea, 20 g / L ...

Embodiment 3

[0075] A processing method for deplating ABS electroplated parts includes the following steps:

[0076] (1) Preparation of bacteria liquid:

[0077] (11) Purchase purified Thiobacillus ferrooxidans and select liquid medium A: 10 g peptone, 3 g ammonium sulfate, 0.1 g potassium chloride, 0.5 g potassium dihydrogen phosphate, 0.5 g magnesium sulfate, 0.01 g calcium nitrate , And deionized water, the above medium is configured into 700 ml solution, and sterilized for 15 minutes;

[0078] (12) Add 300 ml of 20% ferrous sulfate heptahydrate solution to the above solution, adjust the pH of the solution to 2, and incubate for 10 days, watch the color of the solution change from light green to brown-red, indicating Fe 2+ Slowly become Fe under the action of bacteria 3+ , Measure Fe in solution 3+ Reach 25g / L.

[0079] (13) Use the above-mentioned cultured bacteria liquid as a strain to expand culture, and select liquid medium B: 20 ​​g / L peptone, 5 g / L sodium chloride, 20 g / L urea, 20 g / L amm...

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Abstract

The invention discloses a treatment method for stripping an ABS (Acrylonitrile Butadiene Styrene) electroplated part. The treatment method comprises the following steps: (1) preparing a bacterium liquid: cultivating and reproducing thiobacillus ferrooxidans, and putting the bacterium liquid into a bacterium liquid tank; (2) stripping: putting a crushed ABS electroplated part and the bacterium liquid into a leaching tank and carrying out stripping treatment; (3) removing iron: adding an oxidant and alkaline substances into an iron removing tank and carrying out iron removing treatment to separate iron, copper and nickel in sequence; (4) carrying out cyclone copper removal: carrying out copper removing treatment in a copper removal device and separating out copper; (5) extracting nickel: adding an extracting agent into an extracting tank and carrying out nickel extraction. According to the treatment method for stripping the ABS electroplated part, provided by the invention, the thiobacillus ferrooxidans is cultured into the bacterium liquid for stripping; the cost is low and separation is complete; waste gas including chlorine gas and the like is discharged and the corrosion on an ABS plastic part is low, so that the utilization grade of the ABS plastic part is greatly improved, and energy-saving and emission-reduction effects are better; pollution, caused by a traditional stripping method at present, to the environment can be eliminated.

Description

Technical field [0001] The invention relates to the processing and treatment of electroplated parts, in particular to a processing method for deplating ABS electroplated parts. Background technique [0002] ABS plastic electroplated parts have the advantages of light weight, easy processing, good surface gloss and smoothness, as well as its good processing performance, chemical resistance, toughness, and impact resistance. It is used in automobiles, hardware, electronic products and daily It is widely used in household goods. Due to the large-scale use of ABS electroplated parts, my country’s annual output is more than 50,000 tons, coupled with large quantities of imports, the annual consumption is more than 100,000 tons, so the recycling and harmless treatment of its waste is particularly important. . The recycled ABS plastic parts can be reused or used as raw materials for recycling and processing, and the metal on the surface is recycled for secondary use. Reasonable disposal...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/00C25C1/12C22B23/00C22B3/18C12N1/22B29B17/02C12R1/01
CPCB29B17/02C12N1/20C22B3/18C22B7/006C22B15/0065C22B15/0089C22B23/0407C22B23/0453C25C1/12Y02P10/20Y02W30/62
Inventor 周晓
Owner 周晓
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