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Tin-removing tin-plating solution and its preparation method and its recycling method for recovering metal tin

A technology of tin plating solution and tin stripping, which is applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems that metal tin has not been effectively regenerated and refined, waste tin stripping solution cannot be recycled, and environmental pollution, etc., to achieve Easy to handle, high anti-oxidative deterioration ability and high temperature resistance ability, avoiding the effect of large amount of waste water

Active Publication Date: 2017-02-08
SHENZHEN CYPRESS IND DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tin stripping and tin plating solution and its preparation method, which are used to solve the problems that the metal tin in the current tin-containing waste has not been effectively regenerated and refined, the waste of resources is large, and it will cause environmental pollution.
[0005] Another object of the present invention is to provide a method for reclaiming metal tin from tin-containing waste by using the tin stripping tin plating solution, which is used to solve the problem that the current waste tin stripping solution cannot be recycled

Method used

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  • Tin-removing tin-plating solution and its preparation method and its recycling method for recovering metal tin
  • Tin-removing tin-plating solution and its preparation method and its recycling method for recovering metal tin
  • Tin-removing tin-plating solution and its preparation method and its recycling method for recovering metal tin

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Experimental program
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Effect test

Embodiment 1

[0040] Each component and content of the stripping tin plating liquid of present embodiment 1 are as follows:

[0041]

[0042] The tin stripping tin plating solution preparation method of present embodiment 1 may further comprise the steps:

[0043] a1, according to the components and contents of the above-mentioned tin stripping and tin plating solution, weigh the alkanol group sulfonic acid, add it to the weighed deionized water, stir and cool, add the weighed organic sulfonic acid tin salt, mix well Obtain solution I;

[0044] a2. Weigh the accelerator, accelerator, brightener, fine crystal agent, antioxidant and defoamer, add them to the weighed deionized water, and mix well to obtain solution II;

[0045] a3. After mixing the above-mentioned solution I and solution II, add a stabilizer, and finally add deionized water, and stir evenly to obtain the tin stripping tin plating solution.

Embodiment 2

[0047] Each component and content of the tin stripping liquid of present embodiment 2 are as follows:

[0048]

[0049] The preparation method of the tin stripping and tin plating solution of this embodiment 2 is the same as that of embodiment 1, and will not be repeated here.

Embodiment 3

[0051] Each component and content of the stripping tin plating liquid of present embodiment 3 are as follows:

[0052]

[0053]

[0054] The preparation method of the tin stripping and tin plating solution of this embodiment 3 is the same as that of embodiment 1, and will not be repeated here.

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Abstract

The invention discloses tin stripping and tin plating liquid, a preparing method of the tin stripping and tin plating liquid and a method for adopting the tin stripping and tin plating liquid for recycling metal tin from tin-containing waste. The tin stripping and tin plating liquid includes various effective components such as organic sulfonic acid tin salt, alkanol group sulfoacid, a stabilizing agent, an accelerating agent, an accelerator, a brightening agent, a grain fining agent, antioxidant and a foaming agent, and all the components are in synergy. The defect of traditionally recycling tin from tin stripping waste liquid is overcome, interference of other metal impurities is avoided, and high-purity metal tin can be efficiently recycled from the waste liquid. In addition, the operation steps for adopting the tin stripping and tin plating liquid for recycling the metal tin from the tin-containing waste are simple and convenient and fast to implement, the high-quality metal tin can be recycled, furthermore, the tin stripping liquid can be regenerated at the same time to be repeatedly utilized, and the problems that traditional tin stripping waste liquid is large in amount, resources are wasted, and the environment is seriously polluted are solved.

Description

technical field [0001] The invention relates to the technical field of metal tin resource recycling in the chemical industry, in particular to the technical field of tin stripping and tin electroplating in the circuit board industry. Background technique [0002] Metal tin has good weldability, conductivity and gloss, and is widely used in the plate, wire and electronic electroplating industries. The resulting waste plate materials contain a large amount of metal tin. If effective regeneration and extraction are not carried out, resources will be wasted large and cause environmental pollution. [0003] At present, most of the domestic PCB industry adopts nitric acid and nitric acid-alkylsulfonic acid type tin stripping solution to strip tin-containing waste. The waste tin stripping solution produced by this method contains high copper and iron metal ions and residual heterocyclic aromatic compounds. many. It is difficult to treat the waste tin stripping solution, which nee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/32C25C1/14
CPCC25C1/14C25D3/32Y02P10/20
Inventor 饶猛
Owner SHENZHEN CYPRESS IND DEV CO LTD
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