Lightarrow. Thank you for your input. You seem to have a good knowlage of what we are trying to accomplish, would you consider looking over this thread here and see if you can shed some light? Thanks Mike
Vitamin c is relatively expensive for this process. I am looking for a way to cut the cost factor and reuse as much as possible.
That is a very good link to the patent. Thank you Lightarrow. Not being a chemist it will take me a while to decipher tho...
I have used Aqua regia to disolve gold, but it is not as selective as I would like for some of the parts I do. I know that iodine will work, I just have not found the method to drop the gold and regenerate the solution for reuse. I know it was used commercially for a while before cyanide...
Many of the parts we work with are plated. Copper, nickel, Kovar base metals that must be removed or separated. Iodine is reported to be selective enough to just remove the gold. I am still looking for a way to "drop" the gold from the Iodine and still be able to reconstitute the Iodine solution...
Thanks for the link Borek. Here is a quote>>>>
Originally Posted by Mapes
Good point. G01, what is the underlying sample made of?
Potassium iodide is another good selective etchant for gold.
Yes. In the mean time I have done some research and decided that a 1:2:10 mix of I2, KI, and...
Thanks. Yes I believe copper will drop the gold, but it would render the iodine solution infective for further use. I would like to reuse the iodine solution. I am trying to cut down on chem use during the process.
I am working on a pilot project to recover gold from circuit boards. I have tried several methods and am interested in giving iodine a try. I know it will dissolve the gold but I cannot find an answer on how to get the iodine solution to drop the gold. Any ideas? Thanks.
I threw up a link in another post about this guy. I thought it would be better if I gave him a post of his own. Check this guy out and throw him some feedback. I was amazed at his skills and his attitude.One super cool dude in my books. link to several vids here, check a few...
I think this guy has got it right, put it out there, have fun, see who buys. Seems to be working for him judging by the comments. Watch a few vids and you will see what I mean. Then buy the cd,lol I did.
Oh Yeah. When you misplace all those lil decimal points in the metric system stuff can go real bad real fast. From construction grades to french rockets, bad things happen. It is really hard to screw up feet and inches. really hard.
Ha, the metric system!!! believe it or not it was a big bonus for the fuel companies. We here in metric Canada have been overpaying for fuel for 30 years or more. When we moved back to Canada in 1995 gas was 45 cents a liter, it was 98 cents a gallon in Virginia. WOW 45 cents sure sounds cheap...
Hi all. Anyone ever heard of a stereo earpiece? My son is deaf in one ear and when he uses headphones he looses half the sound. Ear buds are the same. only half the sound comes thru. I wonder if there is a full sound earpiece out there some where. IE both channels of sound in one earbud.