Non-Chemical IC chips

[lanfear]

The reason your reaction reacted violently was because you took 37% H2SO4 and boiled it to a consentrate. Then you poured a solution with 63% H2O into hot consentrated sulfuric acid. Does this sound like a good idea? You were lucky..

 

[worker0]

I agree with you completely. In this batch I burned evaporated gases.

I get upset when see how "youtubers" doing it. Specially guys which boiled 150 KG of IC chips. Even watching that is poisonus.

Fumes from acid I reburned in another stove, on about 800º C ( thermometer says ), and rest of leftover acid is in barell for waste disposal company.

I look to save environment and be environmental friendly

Wet ashing is terrible, and to be honest pirolysis is easyer and more friendly. I just wanted to know where I made mistake. I suspect on acid, it is car battery acid. Maybe too weak. Concentrated H2SO4 is very dangerous and water hungry. Long sleeves, and full body cover... Again says just wanted to know where I made mistake. I dont touch it never again...

The reason your reaction reacted violently was because you took 37% H2SO4 and boiled it to a consentrate. Then you poured a solution with 63% H2O into hot consentrated sulfuric acid. Does this sound like a good idea? You were lucky..

I know. Violent reaction when adding it again was because of water. It must be done in one batch and is this acid too weak or strong for this?

PS: to dont open new thread: I have some connectors which is very hard to dissmantle. Is it possible to use pyrolisis process on them? Wired material hard and elastic plastic. I know it sounds crazy. If i pirolyse this material to make plastic crispy and crush with hammer, will I damadfe gold? Example if plastic leave color on plated fingers?

 

[lanfear]

Youtuber "999 Dusan" tried this with battery acid, and it was not possible. Please take some time and learn before you attempt stuff. Also ask questions insted of experimenting.

 

[worker0]

Youtuber "999 Dusan" tried this with battery acid, and it was not possible. Please take some time and learn before you attempt stuff. Also ask questions insted of experimenting.

Watched him maybe 2 weeks ago and they did wet ashing with success. I did not find video with battery acid. In video which do it with sucess, they dont mention strenght of acid. Only reason I conclude is my acis was too weak. Right?

 

[lanfear]

Find his video and see for your self. He is one of the better refining youtubers

 

[Geo]

I don't allow discussion of wet ashing on anything I moderate. I understand the need to know what not to do but to give a detailed process to people with no real experience is as close as you can get to assisting someone to destroy their health and perhaps maim themselves. One slip, or trip, or act of god and it could trigger a life altering event that a person will never fully heal from. Just to say that it is bad and dangerous is not really as dramatic as it should be. People watch a ten minute video and think that it must be very simple.

 

[Geo]

I believe you are talking about Mr. Iqbal. I would warn anyone not to repeat what you may see on his videos. Just the over inflated yields from starting material to, presumably, final product alone should give people a reason to doubt the veracity of the whole video.

 

[DarkspARCS]

Heloo,

Few days ago I got about 1 KG IC chips from RAM memory.
Today I put chips in glass baking pot and cover with H2SO4 about 2 inches from chips.

Ignite fire under ( wood stove ) and boil for 2 hours for now.

1 hour afer boiling ammount of H2SO4 allmost evaporated and I add 1 more liter of accid. Before I added acid there is some H2SO4 but it did not want to boil even higher temparature. Then I added 1 moere liter and wait. It boils slowly for now, but chips looks allmost same when I added them in acid. How long they need to lay in boiling acid until achieveing desired change? H2SO4 is 34%

Thanks

Worker.....

Please review this thread for more details

http://www.goldrefiningforum.com/phpBB3/viewtopic.php?f=52&t=11827

 

[Geo]

You have to pyrolize first, then incinerate.

Direct Incineration will result in losses of gold.


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How does direct incineration equate to gold loss? The boiling point of gold is 5378°F. Incineration occurs at 1,560°F. Much lower than the boiling point of gold.

 

[galenrog]

Incineration, to some, evokes images of lots of flame and lots of smoke. I would think that if an incineration method that generated a lot of smoke was used, a small amount of gold, perhaps immeasurable, may escape with smoke. Of course, I could be wrong in this assumption. If so, then if I remember long enough to add to my notes, then I will have learned something.

Before I dismantled the lab, leaving only silver recovery stations, I followed a procedure that first involved pyrolysis. It may have been based on the thread darkspARCS provided the link to.

Time for more coffee.

 

[Yggdrasil]

If I'm not mistaken the losses will appear during the recovery part.
The pyrolysing removes most of the volatiles and the incineration if done correct, will convert all the carbon residue to CO2 so it doesn't load up with your gold during leaching.
That is my understanding at least. :wink:

 

[sena]

I have done wet ashing several times some time 25 kg to 30 kg , this method only works better for square chips , flat pacs ,thinner one in ram slots and it doesn’t fit for rectangular chips as the yield will be low and due to thick epoxy
The best way I found is to incernate the chips grind in ball mill , filter in steel mesh to separate the metallic pins and run through shaking table
After attempted several times the yield is better in incernation and safer was avoiding wet ashing

Thanks
Sena

 

[snoman701]

You have to pyrolize first, then incinerate.

Direct Incineration will result in losses of gold.


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How does direct incineration equate to gold loss? The boiling point of gold is 5378°F. Incineration occurs at 1,560°F. Much lower than the boiling point of gold.

It's not the boiling point of gold, it's the boiling point of gold chloride/bromide.

There's all kinds of nasties in that plastic including halogenated compounds that complex gold. A combination of halogen gas and heat will oxidize and complex gold. Add the violent atmosphere of incineration and that gold goes away in fume.

You are reminded of the smelting process for silver chloride. Mix silver chloride with soda ash, heat slowly, covered. Losses are still severe.

In pyrolysis the chlorine is still released, but the slow movement of the gasses because of the more gentle process allows the gold to be reduced back to metallic, adsorbed upon the carbon. When you get to the incineration stage following pyrolisis, no halogens remain, so your carbon is oxidized to CO2, leaving only ash and the adsorbed gold.

 

[Geo]

That would still be lost. If it's not heavy enough for the gold wheel or the blue bowl, it's lost in the ash. I did a refine of chips for lazersteve and sent a sample of the left over ash and silica to have analyzed. He said there was some silver but no gold. If there are losses, it will have to be considered acceptable losses. I haven't figured out any better way so far.

 

[vbrabble]

I just want to thank everyone here because I considered wet ashing (very briefly) because I didn't want to incinerate ic chips either.

I am trying to learn and as a person who hasn't refined one gram via any process, I'm going to put the IC chips in a jar and let them sit awhile ... a long while.

I believe I have enough fingers to practice using other methods.

I just want to say thanks!

 

[jarlowski1]

Thank you Vbrabble, I am glad you chose to be safe. Study the processes that are used for each different type of material you have and stick to the tried and true methods and you will do just fine. Remember to read up on how to dispose of your waste properly.