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  for Metal Finishing 1989-2025
  

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Gold Electrowinning

2003

Hi, I am electrowinning Gold -- using impure material as anode in oxidizing conditions. Can anyone recommend what power source to use? Do I need a rectifier to stabilize (current/voltage?) I am looking for a unit that can be used on an industrial scale.

Thanks

Bill O Leary
refining - Dublin, Ireland

Ed. note: Contact info is no longer available for this outdated RFQ -- sorry. Technical replies are welcome, but no public commercial suggestions please! ( huh? why?). If you want private brand or sourcing suggestions, please post an RFQ.

I can help you but I want know complete information about your problem.

Eng Saleh
- Cairo, Egypt
2003

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Contact any electroplating supplier. Rectifiers are made on your area for electroplating and electrowinning. A high amperage, low voltage DC rectifier will do the job. The precise amperage needed is determined by the area of the cathode to be plated.

Don Baudrand
Consultant - Poulsbo, Washington
(Don is co-author of "Plating on Plastics" [on Amazon or AbeBooks affil links]
           and "Plating ABS Plastics" [on Amazon or eBay or AbeBooks affil links])
2004

Hi. I'm a trainee in a gold producing company and we are experiencing an accelerated corrosion of our stainless steel anodes. Could this be a result of weak alkaline solution or are there other reasons for this problem? If there are other causes for this problem, what are they?

Randy Justice
trainee - Benguet, Philippines
2007

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July 26, 2008

You have to check pH of the solution it must not exceed over 10.5. Cyanide? % ?. HCl %?. And check your stainless steel as well. Are you using AISI 304. If so, its normal you have to change it with AISI SS 316.

Regards,

Emrah

Emrah Oztekin
- Ankara/Turkey

i am using an ordinary 220 amp welding machine.i connected my rectifier to the welding machine output of 12volts.i am using one 70 amp power diode as a half wave rectifier to provide power to the electro plates.This is an efficient and cost effective method for gold extraction. 90% gold extraction from the carbons.

Adonis chipwanyira
- zimbabwe
October 10, 2010