Are you talking about the small ceramic capacitors, those can hold values if you collect enough of them.
It sounds like you are putting the whole memory (or some other circuit) into the HCl and 3% Hydrogen peroxide, it is best to cut or trim off the gold fingers from the rest of the circuit board, and process them separately in the solution, this way you do not include solder tin and lead chloride with your foils, you get a better separation of the gold foils from the other stuff, making the process much easier to deal with, and the results much better, also you will not contaminate the solution so it can be reused.
You should not have anything in the melt phase (like those little white things), if processed properly everything is eliminated in the proceeding steps, by the time you melt you should just have almost pure gold.
Look through the forum on the process your using see how the process is done, a good place to begin is in the general chat section look for the general reaction list, and the guide to the forum, welcome to new members.
