My first go at gold recovery from pins.

[AuAgReclaiming]

Dear God. You've continued doing all of this inside?? I'm guessing, based on the age of this post, that you're either dead or have learned better.

I have the same situation, in that I have a lot of old gold plated electronic parts that have a thicker plating. This is an interesting read. My attack to this is to melt the metals into a long thin bar & then use electroplating of the Cu Sb Pb that will form clorides or sulfates, & those that don't will sluff off to a mud in the bottom. Andacopper does this to refine Cu & mud pays for the process. You can use a carbon arc to melt the "pins" & use a solar VP for DC power to plate with & it will be slow. So look at it & make adjustments as needed & do something else.
Use HCl for Ag l plating, for the AgCl doesn't desolve in H2O & will be a mud at the bottom. You will have to add small amouts of HCl to the plating bath as platting & AgCl partisapated out.

 

[Yggdrasil]

I have the same situation, in that I have a lot of old gold plated electronic parts that have a thicker plating. This is an interesting read. My attack to this is to melt the metals into a long thin bar & then use electroplating of the Cu Sb Pb that will form clorides or sulfates, & those that don't will sluff off to a mud in the bottom. Andacopper does this to refine Cu & mud pays for the process. You can use a carbon arc to melt the "pins" & use a solar VP for DC power to plate with & it will be slow. So look at it & make adjustments as needed & do something else.
Use HCl for Ag l plating, for the AgCl doesn't desolve in H2O & will be a mud at the bottom. You will have to add small amouts of HCl to the plating bath as platting & AgCl partisapated out.

Welcome to us.
How much material do you have?