Modifier for copper-containing wastes

A technology of waste and modifier, applied in the field of modifier, can solve the problems of human health injury, sending to landfill for disposal, secondary pollution of the environment, etc.

Active Publication Date: 2015-03-04
林素玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Continuing from the above, when the printed circuit board is scrapped along with the electrical equipment, in addition to recycling the precious metals such as gold, silver, platinum and other palladium materials in the current recycled printed circuit board related resources, the remaining The waste glass fiber resin powder, because there is no effective way to recycle the waste glass fiber resin powder in China at present, so it can only be sent to the landfill for disposal. Resin powder, because it is not easy to decompose in nature, if it is thrown away randomly, it may cause the possibility of heavy metal dissolution, or if it is incinerated improperly, it will cause secondary pollution to the environment, and through the relationship between the natural food chain, it will be destroyed in the future. Potentially serious harm to human health

Method used

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  • Modifier for copper-containing wastes
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  • Modifier for copper-containing wastes

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0020] refer to figure 1 , first of all, the modifier uses silicon oxide, aluminum oxide, calcium oxide and other elements, and the total weight percentage of these elements is 95%, which is added to the waste glass fiber resin powder recycled from printed circuit boards, that is, the following table Types listed:

[0021] Addition amount of modifier Addition amount of waste glass fiber resin powder Copper dissolution rate Not added (known) 100% 387.6 add 5% 95% 220.6 add 10% 90% 8.4 Add 15% 85% 6.3 add 20% 80% 4.8

[0022] The above-mentioned modifier and the waste glass fiber resin powder are mixed according to the above-mentioned different ratios, and 100g after mixing is taken as an example, according to the dissolution procedure of industrial waste toxicity characteristics in Taiwan, China (NI EA R201.14C, heavy metal leached copper content) Carry out the test, learn after the test that the stripping rate of copper tha...

experiment example 2

[0024] refer to figure 2 , the modifier uses silicon oxide, aluminum oxide, calcium oxide and other elements, and the total weight percentage of these elements is 86%, which is added to the waste glass fiber resin powder recycled from printed circuit boards, which is listed in the following table Type:

[0025] Addition amount of modifier Addition amount of waste glass fiber resin powder Copper dissolution rate Not added (known) 100% 387.6 add 5% 95% 199.6 add 10% 90% 95.5 Add 15% 85% not detected add 20% 80% not detected

[0026] The above-mentioned modifier and the waste glass fiber resin powder are mixed according to the above-mentioned different ratios, and 100g after mixing is taken as an example, according to the dissolution procedure of industrial waste toxicity characteristics in Taiwan, China (NI EA R201.14C, heavy metal leached copper content) Carried out the test, learned after the test that the stripping rate...

experiment example 3

[0028] refer to image 3 , the modifier uses silicon oxide, aluminum oxide, calcium oxide and other elements, and the total weight percentage of these elements is 52%, which is added to the waste glass fiber resin powder recycled from printed circuit boards, which is listed in the following table Type:

[0029] Addition amount of modifier Addition amount of waste glass fiber resin powder Copper dissolution rate Not added (known) 100% 387.6 add 5% 95% 335.9 add 10% 90% 282.3 Add 15% 85% 2.0 add 20% 80% 4.1

[0030] The above-mentioned modifier and the waste glass fiber resin powder are mixed according to the above-mentioned different ratios, and 100g after mixing is taken as an example, according to the dissolution procedure of industrial waste toxicity characteristics in Taiwan, China (NI EA R201.14C, heavy metal leached copper content) Carry out the test, learn after the test that the dissolution rate of copper that can be...

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Abstract

The invention discloses a modifier for copper-containing wastes. The modifier includes silicon, aluminum and calcium, and the sum of the weight percentages of the above main components by oxide in the modifier is 50-95%. The modifier can be used for wastes containing a small amount of residual copper (such as waste glass fiber resin powder and waste blast sand generated in the ship surface treatment process), and reacts with copper in the wastes to digest copper in the waste glass resin powder and promotes the reuse and recycling of the modified copper-containing wastes.

Description

technical field [0001] The invention relates to a modifying agent, in particular to a modifying agent used for waste containing copper. Background technique [0002] There are many copper-containing wastes, such as waste sandblasting in the surface treatment process of ships, or waste glass fiber resin powder produced after recycling printed circuit boards. [0003] Taking printed circuit boards as an example, printed circuit boards have been widely used in various electrical products. The main material of printed circuit boards is glass fiber epoxy resin board, and general glass fiber epoxy resin board is made of epoxy resin. Resin is used for bonding between copper foil and glass fiber cloth to form a sandwich board with bare copper on the outside. Therefore, the main components of the substrate are copper foil, glass fiber cloth and epoxy resin, and the substrate is treated with inner layers (film, exposure, etc.) , etching, black browning), pressing, drilling, electropl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/33A62D101/43
CPCA62D3/33A62D2101/43
Inventor 刘景雯林素玉
Owner 林素玉
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