powder containing 25%Silver and 75%Tin

[arthur kierski]

i have a powder containing 25% of silver and 75% of tin--how can i separate the Silver from the tin? thanks for any help.

 

[Yggdrasil]

i have a powder containing 25% of silver and 75% of tin--how can i separate the Silver from the tin? thanks for any help.

The Tin will dissolve in HCl Silver will not.
And at this concentration the Tin should completely dissolve I believe.

 

[nickvc]

Not sure if using HCl will create silver chloride especially in powder form but I think caustic soda will dissolve tin especially if heated , should you choose that option be very careful caustic is nasty and even worse if hot.
Try a couple of small samples using both methods and pick the one that suits your needs.

 

[kurtak]

i have a powder containing 25% of silver and 75% of tin--how can i separate the Silver from the tin? thanks for any help.

We need more information about this powder

Such as -----------

How fine is the powder - powder could be considered anything from 40 mesh in size to 300 mesh & even finer

It can make a difference on how chems will react with it --- example - at 40 mesh HCl would likely dissolve the tin leaving the silver with little or no effect on the silver - but at 300 mesh the HCl "may" create some AgCl

Is the powder an alloy of tin/silver - or is it tin powder - mixed - with silver powder

Kurt

 

[Alondro]

We need more information about this powder

Such as -----------

How fine is the powder - powder could be considered anything from 40 mesh in size to 300 mesh & even finer

It can make a difference on how chems will react with it --- example - at 40 mesh HCl would likely dissolve the tin leaving the silver with little or no effect on the silver - but at 300 mesh the HCl "may" create some AgCl

Is the powder an alloy of tin/silver - or is it tin powder - mixed - with silver powder

Kurt

This seems to be essentially silver 'inquarted' with tin. Should that be enough to dissolve the tin in HCl even if it's an alloy?

 

[anarxi]

I think the silver will be covered with a chloride crust and will partially seal some of the tin if you use hydrochloric acid, besides, it (the chlorine crust) will not be dissolved by nitric acid...
I think direct dissolution in nitric acid and cementation on copper is more practical.