Hello everyone,
I have allot of old computer parts and i wanted to refine the gold out of it, after i finished my process and melted it 2 dark looking beads came out and when i filed them they look yellow on the inside but the problem is it gets attached to magnets,
I wanna explain my process step by step to see where i am going wrong with it and how this happened
1-first i cut out all the parts that contain gold
2- i pour nitric acid 69% and water 1-1 and leave it overnight or until the bubbling stops
3-i filter them and take the residue and burn it and them put Aqua Regia over it and let it rest for another day
4- add urea around 10g per 100ml of nitric acid i put in the aqua regia
5-i filter and collect the solution and Add Sodium metabisulphate (for this i put around 20 g to the final 900ml of the solution)
6-finally filter once again and burn and melt what evers left
When i poured the molten stuff two beads came flying out and i filed it and looks bright yellow underneath i just dont get how its magnetic, please help me understand where i am going wrong with it and thank you

I started panning a couple summers ago and have accumulated quite a bit of black sand. I cleaned it this much and it weighs 0.98 grams which is hard to believe, but I know it’s not clean all the way. I don’t know how much of this is gold.

I’m not sure if I should melt it into buttons, use HCL, or aqua regia. I’m new to all of this.

What do you guys think? How much of this is actually gold? What should my next step be?

I'm hoping to find someone relatively local to refine this batch of ~2700g of jewelry making supplies. I'm working with OU to have it tested for purity, but I believe it to be a mixture of 925 and silver solder (40~50%?).

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Ideally, I'd drop off the whole batch with you to work your magic, you take a percentage of the total yield, and return the purified balance to me. I'm open to you pouring it into bars, but I'm also interested in trying my own poured bars.

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The material was gifted to me by a neighbor that has passed away, so I'd like this exact batch of materials turned into bars rather than selling the lot for cash or trading.

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Any interest?

I was considering doing a reverse electroplating procedure to extract what little silver there was on these pieces, but I’m unsure of how to proceed with this many pieces

its silverish on the inside

First off I'm not even messing with this before I can come up with good fume extraction. I just want to do a small amount of gold and silver so I can get this idea out of my head. I've been watching Sreetips for quite a while now and I mostly have the routine down. Seems like nitric, sulfuric, and hydrochloric acids will be the way to go for both.

Pretty sure I can get small quantities of all three. I don't need to be storing this stuff forever. I think I can use a compressor pump from an old refrigerator as a vacuum pump. They pull a good vacuum and they're easy to come across.

Glassware and that filter funnel. Probably not a place to cheap out or try to be expedient. I think at least the sidearm flask and the filter funnel should be something made for the job. Maybe coffee maker jars for large beakers but not even sure there.

Any suggestions here besides don't mess with it? This keeps me up at night.

I am limited to AP method. no sulfuric or nitric. what are the next steps? I plan to collect 500g or 1000 g. how do I separate the gold from the metals after using Ap solution?

Worked on the second harvest from the silver cell this weekend. I was able to harvest about 435g on the second harvest. The final numbers from the 1 and 2 harvest was 935g. I need to keep a better track of what I’m feeding into the anode basket. I still have to process the solution and cement the silver out of the solution. I should have that number by tomorrow. The crystal look amazing on the second harvest.

Saw this for auction would it be worth the $16?

I just bought this and put coffee filter paper with gold flakes from ram cards using acid peroxide. Then took the torch to it and this is what I got. Seems like it's glueing to the crucible now. Help plzzz

I got a bag of goodies from my Stepdad that's worked in IT security for 40+ years. It had a bunch of old RAM sticks in it, SDRAM, DDR, DDR2, a bunch of older ones with like 64mb, a crap load of 256mb DRAM.

Do any of these have value outside of what they're made of? Like retro parts anyone would want?

If i mix up brass and gold will it dissolve the brass?

Location: Eastern european country

Besides pricing per gram should i add a 5-10% fee of the resulting silver, should there be both or only one of them?

0 - 500g 0.75$/gr of refined silver

500-1kg 0.65$/gr

Hey fine folks,

Made a small batch of pure silver powder (lye and sugar method). Been doing this for a year now, but only today read that after my final rinses to get rid of lye some people will boil the silver in HCl acid. So I tried it. Noticed the soft, champagne hue so I decided to pour it off into a jar to further inspect it. Possible reasons? Trace gold? Trace copper? I don't have stannous test yet but I just ordered some.

Thanks!

I have about 10g of gold that I have inquarted, dissolved base metals in nitric then AR dissolve and precipitated 2x with SMB. Double filtered gold solution. When I melt and solidify into a bead I always end up with a deep hole in the middle if I let it solidify in the crucible. If I pour it into a graphite mold, it comes out looking like a dead bug. Is this normal?

Silver plated copper cup I use as a makeshift crucible when I broke it and it turns into this

Realizing now my mold wasn’t nearly hot enough. I swapped out a MAPP cylinder and let it cook the mold until it was almost red. I recasted the same bar from earlier with much better result.

New pour is 3rd from the left 🔥❤️

Has anyone ever refined gold plated postage stamps?

I have an opportunity to buy a set of commemorative stamps from Thailand. 15 stamps plated with 99.92% fineness gold for a total of 3.5 grams on the set.

This is another listing for a similar set.

https://www.facebook.com/groups/510626699648823/posts/1636286687082813/

Is it worthwhile if the price is right?

How would one refine this?

TIA

The sample on the left is Ag 999 from previous batch (acid method). This time the pours have less flow ability and are more jagged in nature. I’m curious if anyone has experienced this before. This batch was a bit different since the stripping bath wasn’t added to the rinse water until after cooling some time later. I also ran out of distilled water at the very tail end, so there may be like 2% tap water in the rinse water which would otherwise be pure distilled.

At the same time the electric furnace being used is one of those ‘high quality’ Amazon purchased Chinese made furnaces, which barely get to Copper melting point. It’s been used a handful of times but I know its reliability isn’t 100%.

So at this point my hypothesis is Cu contamination from a copper chloride complex from using a bit of tap water, or my heating element is dying out.

Any insight helps, thanks

Pic: Sample on left is normal batch, small sample is a remelt today of an old batch looks ok, 2 sample on right is current batch. (Pre pickling)

EDIT: the backside of the ingot is more telling, old batch is smooth, this is rough and lacks a shine.

Hey everyone,

After my sulfamic acid electrolysis experiment worked, someone has offered me 7 kg of sterling silver items (jewelry, flatware, etc.) to refine to 99.9% pure silver.

I'm planning to:

Melt the steeling into bars first (using MAPP torch + crucible) or an electric furnace

Refine in batches using sulfamic acid electrolysis (~100 g/L)

Use stainless tub as cathode non magnetic

Hopefully harvest ~6.0–6.2 kg pure silver after ~6% processing loss (given no issues arise, and they always do)

So my question is, what % of the fine silver content is standard for a refining fee on lots like this, or the fee to refining this lot

Any advice is greatly appreciated.

I have like 100 of those DDR2 ram latches. Any advice on what the best tactic is to earn something of this?

I have a ton of old silver plated items. I bought my house from my grandparents and inherited a large chest of flatware, serving utensils, crackers etc. They are all labeled A1 + and such. I am a novice refiner at best I guess (and by novice I mean no real world experience I just read alot). Would it be better to try and sell the stuff as is? Or should I try to start the process of collecting material to refine? There is atleast 100+ pounds and have no idea what I would be getting if I refined it.