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Device for on-line recovery of valuable metals from electroplating rinsing solution

A valuable metal and rinsing liquid technology, applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, ion-exchanged water/sewage treatment, etc. Convenience, stable operation, and the effect of increasing labor force

Active Publication Date: 2019-01-15
ZHEJIANG ZHONGSHI ENVIRONMENTAL RESOURCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, although the above-mentioned traditional recycling methods have played a role in recovering metals and reducing pollution to a certain extent, they also have a series of problems such as narrow application range, low recovery rate, and high cost.

Method used

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  • Device for on-line recovery of valuable metals from electroplating rinsing solution

Examples

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Effect test

Embodiment 1

[0018] In a plastic electroplating enterprise, the product roughening section adopts standard roughening solution, which contains chromic anhydride (CrO 3 ) 400g / L, and the workpiece is brought out of the plating solution by about 30L / h. Three rinsing tanks 1, one recovery tank 3, glass liquid film evaporation device and two serial adsorption-removal resin devices are configured on site. The three rinsing tanks 1 are respectively It is a primary rinsing tank 101, a secondary rinsing tank 102 and a tertiary rinsing tank 103. An overflow port is provided between the primary rinsing tank 101, the secondary rinsing tank 102 and the tertiary rinsing tank 103. Add from tertiary rinsing tank 103; recovery tank 3 volumes are 1m 3 , the recovery tank 3 is provided with a float level gauge to control the liquid level, and a hydrometer 6 is provided to measure the ion concentration; a hole is provided between the primary rinse tank 101 and the recovery tank 3 to form a recovery channel U...

Embodiment 2

[0020] In a nickel electroplating enterprise, the plating solution contains 200g / L of nickel sulfate, and the workpiece is taken out of the plating solution at about 20L / h. Three rinsing tanks 1, one recovery tank 3, glass liquid film evaporation device and two series adsorption and desodination devices are installed on site. Resin device, three rinsing tanks 1 are respectively a primary rinsing tank 101, a secondary rinsing tank 102 and a tertiary rinsing tank 103, and an overflow The orifices are connected step by step, and new rinsing water is added from the third-stage rinsing tank 103; the recovery tank 3 is provided with a float level gauge to control the liquid level, and a hydrometer 6 is provided for measuring the ion concentration; the first-stage rinsing tank 101 is connected to the A tunnel is provided between the recovery tanks 3 to form a recovery channel for communication. A recovery liquid delivery pipeline is provided between the recovery tank 3 and the evapora...

Embodiment 3

[0022] In a copper electroplating enterprise, the plating solution contains 150g / L copper sulfate, and the workpiece is taken out of the plating solution at about 10L / h. Three rinsing tanks 1, one recovery tank 3, glass liquid film evaporation device and two series adsorption-desodiumization devices are installed on site. Resin device, three rinsing tanks 1 are respectively a primary rinsing tank 101, a secondary rinsing tank 102 and a tertiary rinsing tank 103, and an overflow The orifices are connected step by step, and new rinsing water is added from the third-stage rinsing tank 103; the recovery tank 3 is provided with a float level gauge to control the liquid level, and a hydrometer 6 is provided for measuring the ion concentration; the first-stage rinsing tank 101 is connected to the A tunnel is provided between the recovery tanks 3 to form a recovery channel for communication. A recovery liquid delivery pipeline is provided between the recovery tank 3 and the evaporation...

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Abstract

The invention relates to a device for recovering valuable metal on line from an electroplating rinsing solution. The device for recovering the valuable metal on line from the electroplating rinsing solution comprises a rinsing tank, an ion exchange resin processing unit, a recovery tank, an evaporation and concentration processing unit and a liquid level control device, wherein the liquid level control device is used for controlling the liquid level of the recovery tank; a hydrometer used for measuring an ion concentration is also arranged in the recovery tank. According to the device for recovering the valuable metal on line from the electroplating rinsing solution, the electroplating rinsing solution is processed through the combination of an ion resin exchange method and an evaporation and concentration method, limitations of respective methods are overcome; according to to-be-recovered metal and different concentrations, the flow distribution is controlled in real time through a PLC (Programmable Logic Controller); the electroplating rinsing solution is enabled to undergo two processing procedures respectively; therefore, the maximization of the recovery benefit of the valuable metal is realized.

Description

technical field [0001] The invention relates to an electroplating waste liquid recovery device, in particular to a device for on-line recovery of valuable metals from electroplating rinsing liquid. Background technique [0002] After the electroplating pendant is processed from the plating tank, the pendant must be taken out of the plating solution with clean water and washed. Rinsing is an essential and important link in the field of electroplating production. Through rinsing, it can prevent the harmful substances carried by the objects in the upstream production process from entering the downstream production process. affect the stability of the process. That is, the rinsing solution is the electroplating solution after concentration dilution, and evaporation under reduced pressure generally does not destroy the composition of the evaporating solution, and can realize the recovery of valuable metals in the rinsing solution. The traditional recovery methods of valuable met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F103/16
CPCC02F1/04C02F1/08C02F1/42C02F9/00C02F2103/16C02F2209/40
Inventor 唐星星
Owner ZHEJIANG ZHONGSHI ENVIRONMENTAL RESOURCES CO LTD