jcriss,
Hello, I would like to help you, but to do this you will need to understand a few things.
First you need to understand very basic principles, you will not learn these by jumping in head first, or by asking questions of how to get out of a problem.
Before we can learn to fly an airplane there are things we need to learn, basic principles of flying, and how to control the airplane, and landing lessons.
It sounds like you are trying to take that airplane for a joy ride before you have had any understanding of the principles of flying, or even had any practice, or even learned how the airplane operates.
You cannot expect to become an expert pilot in a few weeks or even a few months, it takes time to learn and gain skills needed to do your solo flights.
From your question it is clear you have no understanding, of even the most basic principles.
So in my opinion you should not be trying the things you are now, not only are you wasting your time, and not only will you be losing the gold you are hoping to get but you are also taking a chance at hurting your self or others.
Listen carefully to what Harold has told you, following his advice will help you learn to recover and refine gold.
If you do not understand Hokes book, or the principles that she teaches, you should not be trying process, " I have these batches that I am running", this sounds like I have jumped into the airplane and heading over the mountains, help how do I land the airplane? I looked at the simulation flight manual for this plane and I did not understand it, I think I can learn to fly just by trying, I just have a few questions like what do all of these gauges and knobs and levers do in this plane...
Put a solid bar of copper in your solution, this will cement any values out of solution as black powder, brush off anything that sticks to the copper bar, and let solution settle.
Remove liquid without disturbing powders, dry the powders and store them.
To this liquid add a sheet of steel or iron, stir solution, this will cement copper.
Again decant solution (you can dry and save the copper if you wish).
Now raise the pH of the liquid to a pH of 9, this pH is important as this is where most of the base metals are removed from solution, but not all metals.
Let solution settle a few days, and decant liquid from the gelatinous hydroxide soup, dry these hydroxides. We will add more to them in the step below.
The solution now will need to be neutralized with some acid, bringing the pH to 7, this will form some more base metal hydroxides, let these settle, the solution will clear of color leaving you with salt water, after settled decant the salt water from the hydroxide goop and dry.
Take the dried hydroxides and incinerate them to form oxides (hydroxides are water soluble, oxides are not as soluble and are safer for the environment).
You can take the saltwater solution, and your dried oxides powders to a waste disposal facility.
(or you can even evaporate your salt water to crystal salt before taking it, an old electric crock pot works well for that).
Now put up the acids in a safe place, and go back, and get Hokes book, read and study it, and the forum until you do understand what is being taught. basically get those flying lessons first, understand that airplane before attempting to fly.
You have a good chance to learn this skill, it will not be easy, it will not come fast, it is not hard if you do not get impatient and spend the time needed to understand it first, you will not do that by trying to process before you have done your homework.
If you need some help ask, but only after you have spent time with study, so far it does not look like you have done that work yet.
I would not add aluminum to the acid to cement copper, the aluminum hydroxide is terribly hard to deal with in the waste stream it is a voluminous gooey mess hard to dry or get the liquid out of. Iron will work far better at cementing the copper from solution and give you a base metal hydroxide much easier to deal with.
Read the topic dealing with waste in the safety section.
http://en.wikipedia.org/wiki/Reactivity_series
Read Hoke's book until it does make sense.
Be patient you will learn to fly in good time, collect your scrap while you study.