Kleen hydrochloric acid or muratic acid

[Quentin439]

Can I use this to drop silver out of solutions, it only 20% HCL , must of the othe products I have seen used to do this are 37%

 

[eaglekeeper]

Can I use this to drop silver out of solutions, it only 20% HCL ,

I'm assuming you mean dropping silver chloride.
Yes 20% will work.....But so does saturated salt water.

 

[Quentin439]

I'm assuming you mean dropping silver chloride.
Yes 20% will work.....But so does saturated salt water.

Thank you

 

[user 72646]

Hi

I have some silver pins, what is the best AP for refining..?
HCL & peroxide?

Appreciate any information

 

[FrugalRefiner]

If you mean the metal silver, HCl will not accomplish anything because silver is not really soluble in chloride solutions.

If you mean silver colored pins, I would question if there is any gold there.

Dave

 

[Alondro]

If you mean the metal silver, HCl will not accomplish anything because silver is not really soluble in chloride solutions.

If you mean silver colored pins, I would question if there is any gold there.

Dave

Silver-colored pins are a pain to sort. Some of them have silver-palladium plating, some nickel, some tin, some chrome... it's mish-mash.

 

[Yggdrasil]

Silver-colored pins are a pain to sort. Some of them have silver-palladium plating, some nickel, some tin, some chrome... it's mish-mash.

Are you sure, I have never heard about Pd plating on pins?
Where do one find these?

 

[kurtak]

Silver-colored pins are a pain to sort. Some of them have silver-palladium plating,

Are you sure, I have never heard about Pd plating on pins?
Where do one find these?

You may (or not) find these in aero-space, telecom, military, medical electronic equipment

Mostly older stuff

NEVER in consumer electronics

Also - the Soviet Union (again mostly old stuff) actually used a lot of palladium (& even platinum) for plating in their electronics

So - yes - though it is out there - it is VERY rare --- & again NEVER in consumer electronics

Kurt

 

[kurtak]

I have some silver pins,

Just because they are silver in color does NOT mean they are silver

MANY metals are silver in color - nickel, chrome, tin just to name a few

If they are magnetic they are more then likely made of Kovar which is an alloy made of iron nickel & cobalt that is silver in color & usually plated with nickel or chrome

There is absolutely NO reason to make pins out of silver (&/or to plate them with silver) other then in the VERY RARE exceptions listed in my last post

Most certainly NOT (silver) in consumer electronics

Kurt

 

[user 72646]

Off topic, but should i cotton filter, this AP solution?

Appreciated.
MM

 

[Alondro]

You may (or not) find these in aero-space, telecom, military, medical electronic equipment

Mostly older stuff

NEVER in consumer electronics

Also - the Soviet Union (again mostly old stuff) actually used a lot of palladium (& even platinum) for plating in their electronics

So - yes - though it is out there - it is VERY rare --- & again NEVER in consumer electronics

Kurt

My boards tend to be a mix of everything. The only ones I can absolutely be sure to toss are the 'silvery' pins from what are clearly desktop harddrive motherboards and laptop motherboards. The rest are from various industries, and so I save those. It's easy enough to plop the little pile into HCl and see what's left over.