PCB And Electronics Manufacturing
Gold silver and copper leaving the line in solution, brought back as metal
What Goes Wrong Today
- Gold and silver plating baths lose metal into rinse tanks as drag-out on every rack.
- Alkaline etching produces a large volume of waste liquid containing 100-170 g/L of copper along with ammonia, salt and ammonium chloride.
- Selling etchant on for neutralisation and precipitation wastes ammonium ions and leaves copper unrecovered.
- Discharge limits on copper and silver have to be met before the effluent leaves the plant.
What Buyers Ask For
- Recovery that runs beside the line without a treatment building
- No reagent handling on the production floor
- Etchant that can be returned to the process
- Documented residual metal levels in the treated stream
Equipment That Suits This Industry
Precious Metal Electrolytic Recovery Machine For Plating Solution
Rotating-cathode high-frequency pulse electrowinning for spent plating baths, rinse water and pregnant solutions
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Silver Electrolytic Recovery Machine For Silver Plating Solution
Dedicated silver electrowinning for semiconductor, PCB and jewelry plating lines
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Copper Electrolysis Recovery Machine For PCB Etching And Plating Solution
Direct electrolysis of alkaline etchant and copper plating bath so the etchant returns to the line
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Gold Electrowinning Machine For E-Waste Stripping Pregnant Solution
Recovers gold from RAM CPU PCB and pin stripping liquor by electrolytic deposition
View machineHow The Equipment Is Deployed
Scenario
Gold plating line drag-out and rinse water treated on an AC400 or AC600 recovery machine
Scenario
Silver plating solution from semiconductor packaging treated on a dedicated silver recovery machine
Scenario
Alkaline etchant electrolysed so copper plates out and the etchant returns to the line
Scenario
Gold finger stripping liquor electrowon down to 2-10ppm residual gold
Cases And Reading For This Industry
Precious Metal Recovery On A Plating Line
Recovery machine installed beside gold and silver plating tanks
Read moreCopper Recovery From PCB Etching Waste Liquid
Direct electrolysis that returns the etchant to the production line
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Technical Advantages Of The Silver Electrolytic Refining Machine
Current density, automation, exhaust handling, product purity and materials of construction on the silver electrolytic refining machine, with the figures behind each.
Read moreQuestions From PCB And Electronics Manufacturing
Which machine should we start with?
Start with the stream that carries the most metal. For pcb and electronics manufacturing that is usually covered by the Precious Metal Electrolytic Recovery Machine For Plating Solution.
Can you size the machine from our figures?
Yes. Send the metal, the concentration and the daily volume and we will confirm the model.
Do you build machines for a specific solution?
Yes. Machines are produced to standard models and can also be designed around your liquid composition, volume and processing target.
What residual metal levels can we expect?
The recovery machines bring treated solution below 5-20ppm silver and 2-10ppm gold.
Do the machines need consumables?
The recovery machines need no reagents or accelerators at all. The refining machines use 10% dilute nitric acid or a sulfuric acid electrolyte.
Equipment For PCB And Electronics Manufacturing
Send us your solution analysis and daily volume. We will tell you what it is worth recovering and which machine does it.