Ceramic Cpu's

[copperkid_18]

Here's how I proceed with Poor man's AR:

1. Remove lids (top and bottom) from ceramic cpus using MAPP gas.
2. Add cpu's into large beaker or coffee pot.
3. Fill with HCl (31.45% approx 10 M). Add just enough to cover the cpus.
4. Add and equal volume of tap water
5. Place small ceramic saucer on top of pot to prevent vapor from escaping.
6. Heat to just below boiling.
7. Add in 2 teaspoons of sodium nitrate.
8. Boil for 30 minutes or until brown fumes are no longer visible.
9. If salts form pour off dark acid through tight filter and start at step 3 above. Filter may contain gold foils or powder.
10. Repeat steps 6 and 7 until all metals are dissolved.
11. Remove ceramic saucer and let the solution evaporate down to 25% of it's original volume, or until salts form.
12. Add fresh HCl to expel nitric as brown vapors.
13. Repeat steps 9 and 10 two more times.
14. Dilute with equal volume of tap water.
15. Filter through packed funnel under vacuum until 100% free of sediment and suspended particles.
16. Add Sodium Meta Bisulfite to precipitate gold as brown powder.
17. Let settle and siphon liquid off brown powder.
18. Add enough water to cover brown powder.
19. Repeat steps 15 and 16 two more times.
20. Add enough HCl (32% 10M) to cover brown powder.
21. Boil HCl with brown powder until color of HCl no longer darkens.
22. Repeat steps 15 and 16 two more times.
23. Slowly dry gold in beaker by shaking beaker over medium heat until the gold powder moves freely about the beaker it's was precipitated in.
24. Transfer brown powder melting dish and heat to red heat (incinerate) DO NOT MELT!!!
25. Transfer incinerated powder to beaker and repeat process steps 3 to 21 on the brown powder.
26. Prepare melting dish as shown on my website melting videos.
27. Melt dry gold powder in properly prepared melting dish.

The lids and ceramic housings will need to be processed to get the remaining gold from the cpus.

The lids strip very well using the sulfuric cell shown on my website.

The cores will need to be crushed to -200 mesh and leeched with hot AR or HCl-Cl to get to the fine gold wires inside.

I don't know of a way to get the gold without touching the base metals, perhaps a 1% sodium cyanide leech.

Steve

Ok, my question is about #15 what exactly does this mean?

 

[Barren Realms 007]

Here's how I proceed with Poor man's AR:

1. Remove lids (top and bottom) from ceramic cpus using MAPP gas.
2. Add cpu's into large beaker or coffee pot.
3. Fill with HCl (31.45% approx 10 M). Add just enough to cover the cpus.
4. Add and equal volume of tap water
5. Place small ceramic saucer on top of pot to prevent vapor from escaping.
6. Heat to just below boiling.
7. Add in 2 teaspoons of sodium nitrate.
8. Boil for 30 minutes or until brown fumes are no longer visible.
9. If salts form pour off dark acid through tight filter and start at step 3 above. Filter may contain gold foils or powder.
10. Repeat steps 6 and 7 until all metals are dissolved.
11. Remove ceramic saucer and let the solution evaporate down to 25% of it's original volume, or until salts form.
12. Add fresh HCl to expel nitric as brown vapors.
13. Repeat steps 9 and 10 two more times.
14. Dilute with equal volume of tap water.
15. Filter through packed funnel under vacuum until 100% free of sediment and suspended particles.
16. Add Sodium Meta Bisulfite to precipitate gold as brown powder.
17. Let settle and siphon liquid off brown powder.
18. Add enough water to cover brown powder.
19. Repeat steps 15 and 16 two more times.
20. Add enough HCl (32% 10M) to cover brown powder.
21. Boil HCl with brown powder until color of HCl no longer darkens.
22. Repeat steps 15 and 16 two more times.
23. Slowly dry gold in beaker by shaking beaker over medium heat until the gold powder moves freely about the beaker it's was precipitated in.
24. Transfer brown powder melting dish and heat to red heat (incinerate) DO NOT MELT!!!
25. Transfer incinerated powder to beaker and repeat process steps 3 to 21 on the brown powder.
26. Prepare melting dish as shown on my website melting videos.
27. Melt dry gold powder in properly prepared melting dish.

The lids and ceramic housings will need to be processed to get the remaining gold from the cpus.

The lids strip very well using the sulfuric cell shown on my website.

The cores will need to be crushed to -200 mesh and leeched with hot AR or HCl-Cl to get to the fine gold wires inside.

I don't know of a way to get the gold without touching the base metals, perhaps a 1% sodium cyanide leech.

Steve

Ok, my question is about #15 what exactly does this mean?

He is filtering out the impurities before he drops his gold.

 

[copperkid_18]

Well I mean, can I just use a regular coffee filter and put it in a strainer and will that work?

 

[lazersteve]

Well I mean, can I just use a regular coffee filter and put it in a strainer and will that work?

If you do not use a packed funnel neck or a good vacuum setup you will not get a clear (transparent) solution. The sediment and turbidity is a sign of contaminates in your solution. You should be able to read the paper through a properly filtered solution.

Steve

 

[Harold_V]

Well I mean, can I just use a regular coffee filter and put it in a strainer and will that work?

If you choose to use a strainer, make sure it's not metallic.

Harold

 

[copperkid_18]

Well I mean, can I just use a regular coffee filter and put it in a strainer and will that work?

If you choose to use a strainer, make sure it's not metallic.

Harold

ok, i have a plastic one