The advantages of SnST-550A technology are not only the recycling value of Sn itself, but also provide easy way to collect the components (IC chips, CPU) from motherboard. There are many precious metals inside the IC chips and CPU.
UW-860G Gold stripper can be used to recycle Au from these electronic components.
UW-700 is suitable for thegold plating layer on the whole metal substrate (connectors or gold pins).
UW-860is suitable for PCB, CPU, and RAM, which gold plating layer on the ceramic, silicon, plastic that not easy to conduct.
Our products have been exported worldwide, including North America, South America, Europe, and Asia.There is no any problem occurs at all. Or you could check HS code of our chemical products, 3810.10.10, with your country’s Customs office first.
UW-700 could remove Au layer perfectly without damaging any substrate, including Copper, Nickel, and Aluminum material. This is also an advantage compared with Cyanide or Aqua regia system.
On the other hand, AgST-350 is frequently used to recover Ag from surface of telecommunication server. No damage to Aluminum at all.
SnST-550 Tin stripper can strip the tin from the mother board, without burning or grinding them.We can recycle valuable metal in those ICs, capacitors and others by different chemical stripping method.
UWin has developed portable machines for metal strippers:
The advantages of Portable machines are :
Choosing the UW-195 platinum stripper can strip the Pt and Pd metal from the e-waste, and using the different reduction agent to separate these two kinds of precious metals.
We suggest you can test your e-waste by portable machine first.
One bottle of UW-700 is 600 grams powder, and can be dissolved in 10 liter of water. The saturation is 70 grams of gold in 10 liter solution. UW-700 stripping solution can be reuse, so it doesn't have any waste water. You can use the specific weight to measure the saturation.
One liter of eco-friendly chemical gold stripping solution is ==> 68% HNO3 500ml/L + UW-860G stripper 500 ml/L
One liter gold stripping solution can dissolve 7.5g/L of pure gold, but if your e-waste has a lot of copper and nickel metal, the saturation of gold is near 0.5~2 g/L. So, it's why we need to design the automatic machine to control the stripping reaction conditions (time and temp.)
If UW-860G stripping solution can't dissolve the gold, you need to through it away to reduction the gold by using K2S or Zn powder or Sodium Hydrosulphite.
Metal sludge sedimentation and pH adjustion (pH 5-10, COD < 100)
Both of them are needed.
UW-700 electrolyte gold stripper can strip the gold from the whole metal (easy to conductive)
UW-860G chemical gold stripper can strip the gold from the plastic, silicon, ceramic (non-conductivity)
Gold finger, PCB, Flip Chip, IC, Wafer, CPU and so on.
It can be re-used for a long time. If the stripping rate became slowly, you just added the UW-700 electrolyte gold stripper into the solution.
You can use UW-860G chemical gold stripper to dissolve the gold from e-waste first, and use the ICP instrument to analyze the gold concentration in the solution.
Traditional methods are pyrometallurgy, cyanidation and Aqua Regia. UWin’s eco-friendly treatment is a reverse engineering to PCBA. SnST-550 can desolder the tin,and you can collect all components from the PCBA, then leach the precious metals from different components by UW-860 and UW-700. Without shredding process, cyanidation and Aqua Regia, it is an eco-friendly hydrometallurgy.
The first step we suggest for you is to send 1 kg of your e-waste or mine to us for the precious metal analysis paid testing. UWin will send you the test report.
Although we still need to discuss about the size and other details, all equipment you need is in this video. https://www.youtube.com/watch?v=yPp88YiPvTM&t=31s
It’s a concentrate process. IC has high gold content inside.
It is not necessary to change the whole liquid. Just replenish UW-700 powder to the liquid and make sure it’s all dissolved in the liquid.
UW-400 electrolyte Pd stripper and UW-195 Pd/Pt stripper are your good choice.
TiST-800 Ti stripper is an eco-friendly solution, without HF and Cyanide.
UW-480 copper stripper is suitable, which has the following advantages:
1. The reaction is mild and does not produce NOx.
2. High selectivity, no damage the substrate.
3. Simple wastewater treatment.
It means different kind of cathode material of battery.
LCO: lithium cobalt oxide.
NMC: lithium nickel manganese cobalt oxide.
NCA: lithium nickel cobalt aluminum oxide.
LCO, NMC and NCA batteries with cobalt inside have much higher operating voltage, higher energy density and more eco-friendly than nickel-cadmium battery.
Definitely not. Cyanide and mercury are very toxic and harmful to humans and the environment. Therefore, we strongly recommend that you replace with the more environmentally friendly process. We can provide you the best plan best suit your needs.
We provide a series of professional training courses for our clients to apply our technology in your business. The courses take about 2 to 4 days.