All,
I've processed a single hard drive platter and came up with some numbers and an unexpected result.
First the numbers:
Platter pretreatment weight 14.65 g
The platter was shiny silver like a mirror, not the brown type.
Platter weight after 24 hours in cold 70% nitiric 5.75 g
Foils weight after 32% HCl treatment 0.40 g
[img:571:533]http://www.goldrecovery.us/images/platter_vial.jpg[/img]
Foils in hot 70% nitirc.
Rinsed foils after hot 70% nitirc treatment <0.05 g (limit of scales).
The shocking results of this experiment are as follows:
Fresh stannous chloride shows NO coloring hint of platinum in the tests as seen here:
and a comparison of the liquids extracted from the foils with hot AR verses liquid from palladium bearing monolithic capacitors. The AR foils test tube is on the left and the test tube of monolithic capacitors on the right is known to contain Palladium:
[img:502:335]http://www.goldrecovery.us/images/platter_testtubes.jpg[/img]
After these odd(?) results I wanted to determine if the amount of Platinum was too small to detect so I processed a few catalytic converter beads as a baseline test. The results were pretty conclusive as to the power of stannous chloride to detect traces of Platinum as seen here:
First the beads after boiling 5 minutes in AR:
and finally the stannous chloride test of the bead solution:
From these tests I can only conclude the platter I tested had no Platinum content.
Has any member ever processed a platter and verified the material produced was indeed Platinum? If so please post evidence of your experiments so we can compare the processes.
I've saved all the left over solutions and they test positive for Cobalt, and negative for PGMs.
Steve
I've processed a single hard drive platter and came up with some numbers and an unexpected result.
First the numbers:
Platter pretreatment weight 14.65 g
The platter was shiny silver like a mirror, not the brown type.
Platter weight after 24 hours in cold 70% nitiric 5.75 g
Foils weight after 32% HCl treatment 0.40 g
[img:571:533]http://www.goldrecovery.us/images/platter_vial.jpg[/img]
Foils in hot 70% nitirc.
Rinsed foils after hot 70% nitirc treatment <0.05 g (limit of scales).
The shocking results of this experiment are as follows:
Fresh stannous chloride shows NO coloring hint of platinum in the tests as seen here:
and a comparison of the liquids extracted from the foils with hot AR verses liquid from palladium bearing monolithic capacitors. The AR foils test tube is on the left and the test tube of monolithic capacitors on the right is known to contain Palladium:
[img:502:335]http://www.goldrecovery.us/images/platter_testtubes.jpg[/img]
After these odd(?) results I wanted to determine if the amount of Platinum was too small to detect so I processed a few catalytic converter beads as a baseline test. The results were pretty conclusive as to the power of stannous chloride to detect traces of Platinum as seen here:
First the beads after boiling 5 minutes in AR:
and finally the stannous chloride test of the bead solution:
From these tests I can only conclude the platter I tested had no Platinum content.
Has any member ever processed a platter and verified the material produced was indeed Platinum? If so please post evidence of your experiments so we can compare the processes.
I've saved all the left over solutions and they test positive for Cobalt, and negative for PGMs.
Steve
I have hundreds of these platters (mid-2003 and newer) SCSI drives (out of RAID systems) - so, I've got some real curiosity going on here! Any update as to the recoverability of these platters? Also, has anyone done any recovery of platinum through the ICs?
