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Method and device for recycling copper from browning liquid and additive

A technology of additives and browning liquid, applied in the field of PCB waste liquid treatment, can solve the problems of low copper ion recovery efficiency, etc., and achieve the effects of convenient operation, reduction of copper content, and simple device structure

Pending Publication Date: 2019-08-06
深圳市泓达环境科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the present invention proposes a method, device and additives for recovering copper from browning liquor, which can quickly and effectively electrolyze bright copper from browning waste liquor, aiming at solving the problem of existing browning liquor. There is a problem of low recovery efficiency of copper ions in the recycling of chemical waste liquid

Method used

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  • Method and device for recycling copper from browning liquid and additive

Examples

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Comparison scheme
Effect test

Embodiment 1

[0061] The additive raw material for electrolysis includes the following components:

[0062] Polyethylene glycol 9g, polyacrylamide 2g, sodium hypochlorite 5g, sodium polydithiodipropane sulfonate 8g, sodium chloride 10g.

[0063] Add each raw material into the additive mixing tank according to the above dosage, add 1L of water and stir evenly to obtain an aqueous solution of the additive for electrolysis. There is 2000L of electrolytic browning waste liquid in the waste liquid storage tank, in which the copper content is 21.6g / L, and the theoretical copper production is 43.2Kg. Add 1L of the electrolytic additive aqueous solution into the waste liquid storage tank, and mix evenly with the help of a stirring device. Pump all the evenly mixed electrolytic browning waste liquid in the waste liquid storage tank into the electrolytic cell for electrolytic treatment. The electrolysis treatment condition is, the current density is 300A / m 2 , under aeration. Finally, the actuall...

Embodiment 2

[0065] The additive raw material for electrolysis includes the following components:

[0066] Polyethylene glycol 8g, polyacrylamide 1g, sodium hypochlorite 4g, sodium polydithiodipropane sulfonate 7g, sodium chloride 9g.

[0067] Add each raw material into the additive mixing tank according to the above dosage, add 1L of water and stir evenly to obtain an aqueous solution of the additive for electrolysis. There is 2000L of electrolytic browning waste liquid in the waste liquid storage tank, in which the copper content is 20.2g / L, and the theoretical copper production is 40.4Kg. Add 1L of the electrolytic additive aqueous solution into the waste liquid storage tank, and mix evenly with the help of a stirring device. Pump all the evenly mixed electrolytic browning waste liquid in the waste liquid storage tank into the electrolytic cell for electrolytic treatment. The electrolytic treatment condition is, the current density is 250A / m 2 , under aeration. Finally, the actually...

Embodiment 3

[0069] The additive raw material for electrolysis includes the following components:

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Abstract

The invention discloses a method and device for recycling copper from browning liquid and an additive. The additive is prepared from, by mass part, sodium hypochlorite and sodium chloride. The additive is added to the browning waste liquid, the bright copper can be fast and effectively electrolyzed out of the browning waste liquid, and the copper content of the browning waste liquid is greatly reduced.

Description

technical field [0001] The invention relates to the field of PCB waste liquid treatment, in particular to a method, device and additive for recovering copper from browning liquid. Background technique [0002] Browning solution is a treatment solution used to improve the adhesion between the copper surface of the inner layer of the multilayer printed circuit of the printed circuit board and the polymer material. Improving the bonding force between multilayer boards can start from two human factors: one is to increase the specific surface area of ​​the bonding surface, and the other is to form a layer of organic metal conversion film. After the inner layer board is browned, a uniform honeycomb-shaped organic metal copper layer is formed on the copper surface. This structure can enhance the bonding force with the semi-cured resin; at the same time, in the lamination process, it is necessary to participate in the curing of the resin. Combined reaction, thereby forming chemical...

Claims

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Application Information

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IPC IPC(8): C25C1/12C25C7/00C25C7/02
CPCC25C1/12C25C7/00C25C7/02Y02P10/20
Inventor 李建光
Owner 深圳市泓达环境科技有限公司
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