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Application treatment method of metal skin of recovered waste chromium-electroplated ABS (Acrylonitrile Butadiene Styrene) plastic

An ABS plastic and chrome plating technology, applied in the field of application and treatment of metal skins, can solve the problems of low reuse value of metal skins, cannot be disposed of well, and low cost, and achieves complete reaction, resource saving and stable production process. Effect

Active Publication Date: 2015-07-01
佛山市中天荣环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple in process, low in cost, safe and environmentally friendly, and is widely advocated at home and abroad. However, the reuse value of the separated metal skin is not high and cannot be disposed of well.

Method used

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  • Application treatment method of metal skin of recovered waste chromium-electroplated ABS (Acrylonitrile Butadiene Styrene) plastic
  • Application treatment method of metal skin of recovered waste chromium-electroplated ABS (Acrylonitrile Butadiene Styrene) plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 Chromium-copper-nickel oxide mixture is directly used as ceramic pigment:

[0047](1) Oxygen-enriched roasting of chromium-containing metal skin:

[0048] The chromium-containing metal skin is roasted in an oxygen-enriched roasting furnace with a material layer thickness of 20cm, controlled air flow, and roasted at a temperature of 800°C for 60 minutes to obtain a mixture of chromium-copper-nickel metal oxides, namely Cr 2 o 3 , CuO, NiO mixture. The mixture of chromium-copper-nickel metal oxides was pulverized into 300-mesh powder with a Raymond machine.

[0049] (2) Manufacture of brown ceramics:

[0050] Add 3% chrome-copper-nickel metal oxide mixture powder to the vitrified tile ceramic blank, add 5% water, mix evenly and grind to about 50 mesh, granulate, make ceramic brown ceramic color plate, and put it in the kiln Firing, the firing temperature is 1205°C. The brown ceramics after firing have been tested, and there is no Cr 6+ dissolution.

Embodiment 2

[0051] Embodiment 2 chrome-copper-nickel oxide mixture is directly used as ceramic pigment:

[0052] (1) Oxygen-enriched roasting of chromium-containing metal skin:

[0053] The chromium-containing metal skin is roasted in an oxygen-enriched roaster with a material layer thickness of 20cm, controlled air flow, and roasted at a temperature of 1200°C for 40 minutes to obtain a mixture of chromium-copper-nickel metal oxides, namely Cr 2 o 3 , CuO, NiO mixture. The mixture of chromium-copper-nickel metal oxides was pulverized into 300-mesh powder with a Raymond machine.

[0054] (2) Manufacture of brown ceramics:

[0055] Add 3% chrome-copper-nickel metal oxide mixture powder to the vitrified tile ceramic blank, add 5% water, mix evenly and grind to about 50 mesh, granulate, make ceramic brown ceramic color plate, and put it in the kiln Firing, the firing temperature is 1205°C. The brown ceramics after firing have been tested, and there is no Cr 6+ dissolution.

Embodiment 3

[0056] Embodiment 3 chromium-copper-nickel oxide mixture is directly used as ceramic pigment:

[0057] (1) Oxygen-enriched roasting of chromium-containing metal skin:

[0058] The chromium-containing metal skin is roasted in an oxygen-enriched roasting furnace with a material layer thickness of 20cm, controlled air flow, and roasted at a temperature of 950°C for 45 minutes to obtain a mixture of chromium-copper-nickel metal oxides, namely Cr 2 o 3 , CuO, NiO mixture. The mixture of chromium-copper-nickel metal oxides was pulverized into 300-mesh powder with a Raymond machine.

[0059] (2) Manufacture of brown ceramics:

[0060] Add 3% chrome-copper-nickel metal oxide mixture powder to the vitrified tile ceramic blank, add 5% water, mix evenly and grind to about 50 mesh, granulate, make ceramic brown ceramic color plate, and put it in the kiln Firing, the firing temperature is 1205°C. The brown ceramics after firing have been tested, and there is no Cr 6+ dissolution. ...

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Abstract

The invention relates to an application treatment method of the metal skin of a recovered waste chromium-electroplated ABS (Acrylonitrile Butadiene Styrene) plastic, and the application treatment method comprises the following steps of: (1) carrying out oxygen-enriched air roasting on the chromium-containing metal skin in an oxygen-enriched roasting furnace to be transformed into a mixture of chromium, copper and nickel metal oxides; (2) placing the mixture of the chromium, copper and nickel metal oxides into a close type rotary kiln, adding an additive FeSO4.7H2O, and then carrying out heating reaction to wholly transform into a mixture of chromium, iron, copper and nickel oxides; and (3) directly applying the mixture of the chromium, copper and nickel metal oxides as a ceramic pigment or as a raw material used for synthesizing the ceramic pigment, and directly applying the mixture of the chromium, iron, copper and nickel oxides as the ceramic pigment or as the raw material used for synthesizing the ceramic pigment. The application treatment method disclosed by the invention changing the wastes into valuables, saves the resources, reduces the environment pollution, reduces the production cost of the ceramic pigment and is energy-saving, green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to an application treatment method for recycling the metal skin of the electrochrome-plated ABS plastic after the metal is separated from the plastic in the process of recycling the ABS chrome-plated plastic. Background technique [0002] In recent years, with the rapid development of our country's social economy, especially with the development of the automobile industry, toys, and electronic industries, the combination of metal and plastic has many characteristics and is widely used, especially ABS plastic chrome-plated parts, my country's The annual output is about 50,000 tons, plus large quantities of imports, the annual consumption is more than 120,000 tons, so the recycling and harmless treatment of its waste products is particularly important. At present, the recycling methods of waste electrochrome-plated ABS plastic mainly include: [0003] Chemica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/04C04B35/626C04B41/86
Inventor 廖红卫吴增银张宝驹陈改芬伍向红李荷芸孟详敏王少雷陈小飞张天宇
Owner 佛山市中天荣环保新材料科技有限公司