Desoldering fluid and its recycling solutions
Thread Content
The printed circuit board industry uses *AO acid-based desoldering fluids, whose main components are *AO acid, *AO acid tin, *AO acid iron, and stabilizers; the waste fluid resulting from their use contains large amounts of tin and small amounts of copper. I would like experts to discuss how to extract tin and copper from it without damaging the *AO acid and its main components; thereafter, by adding an appropriate amount of *AO acid and additives, it can be reused. It was intended to use double-effect low-temperature distillation to obtain pure *ao acid, resulting in a mixture of *ao acid salts; however, separating this mixture is also complicated, and iron *ao acid is a useful material that can be reused. I want to explore better methods.
The printed circuit board industry uses *ao acid series desoldering fluids
Probably everyone has gone for the New Year holiday, so there aren’t many people participating in the discussion
Has the post gone viral, or are there not many people following this project? ?
Something isn’t right; the process needs to be regenerated. It’s not feasible to disrupt its original acid-base balance. Moreover, what level of acidity can be achieved using a rotatory electric nitric acid system? An impressive 20% acid content – his requirements regarding the reuse of this acid are high; it contains a significant amount of iron, which ensures the same efficiency and quality in electrowinning.
It is unclear what the components of the waste liquid are as mentioned by the poster; how much iron ion is there? If it is not high, it will not have much impact on the electrowinning efficiency; adjusting the acidity can be used to hydrolyze and separate tin, but this requires the use of some acid. There is always a trade-off; it depends on the benefits.