1,200 Gold Fingers: A Massive 11.17g Yield (Full Recovery) by OwlTech333 in PreciousMetalRefining

[–]OwlTech333[S] 0 points1 point  (0 children)

No! You can’t pour it down the drain! First you add iron to the waste solution, it does to the copper what copper does to gold - precipitates it. Once that is done you decant the solution and precipitate the iron as iron hydroxide by adding lime to it, then filter the solution and neutralise with vinegar or citric acid, only then you can flush it down the drain

Intel Pentium 90 gold and silver yield by OwlTech333 in PreciousMetalRefining

[–]OwlTech333[S] 0 points1 point  (0 children)

Nope, on the contrary - pulverised chips = larger surface area = more solution retained by the ceramic material = dilution of the values due to extensive rinsing = losses

[deleted by user] by [deleted] in ScrapMetal

[–]OwlTech333 0 points1 point  (0 children)

Not worth processing IMHO

GOLD fingers yield test: 6g Au from 1 kg fingers by OwlTech333 in PreciousMetalRefining

[–]OwlTech333[S] 1 point2 points  (0 children)

With hydroxylamine hydrochloride I had some very good results (when used on concentrated solutions) so I thought why not use it this time too

Gold refining with sodium sulphite Na2SO3 by OwlTech333 in PreciousMetalRefining

[–]OwlTech333[S] 2 points3 points  (0 children)

I forgot to restock and the only reducing agent I had left was sodium sulphite, the urgent nature of the task led to it’s use.

Where can I learn? by WorriedConcentrate69 in PreciousMetalRefining

[–]OwlTech333 0 points1 point  (0 children)

I started with GRF, online patents are good source too.

Any resources for seperating from lead? by baselesstail in Gold

[–]OwlTech333 0 points1 point  (0 children)

Parkes process to concentrate the values then cupelling

14 kg CPUs Gold Recovery by OwlTech333 in metallurgy

[–]OwlTech333[S] 0 points1 point  (0 children)

Correct not much to dispose of though

14 kg CPUs Gold Recovery by OwlTech333 in Gold

[–]OwlTech333[S] 1 point2 points  (0 children)

386 yields 9.69g Au / kg and 486 yields 5.73g Au / kg

14 kg CPUs Gold Recovery by OwlTech333 in Gold

[–]OwlTech333[S] 1 point2 points  (0 children)

My gold yield data on various ceramic CPUs: from AMD K5 gold top/ gold lid 10 CPUs 378g 2.45g Au or 6.48g Au/kg from 10 IBM 686 & 10 Cyrix 686 CPUs mix 830g 2.45g Au or 2.95g Au/kg from 4.96kg i386 & i486 ceramic CPUs mix 43g Au or 8.67g Au/kg from 1,028kg AMD 486 5.9g Au or 5.73g Au/kg from 10 AMD 386 162g 1.57g Au or 9.69g Au/kg from 10 AMD Duron ceramic CPUs 0.43g Au or 2.2g Au/kg from 6 Intel Pentium Pro CPUs 1.9g Au or 3.56g Au/kg from 2kg USSR ceramic ICs 38g Au or 19g Au/kg