Purify Gold NEED HELP

[kadriver]

jparker, hello and welcome to the forum.

I made a short video that may be helpful to you.

It is titled "Gold Refining Basics Complete Process For The Home Refiner".

It does not contain any info on recovering gold from escrap, but it will show you how to refine the gold you recover from escrap.

It shows the process that I use to recover and refine gold from karat scrap jewelry starting with inquarting to melting the fine gold and making an ingot.

You should be able to locate the threat that contains the video on this forum by using the search feature located at the upper right at the top of the forum web page. Just type in the title and hit search.

If you can't find it here on the forum, then go to Google and type in "gold refining" into the search block - my YouTube video will pop up on page one of the Google search engine with the same title listed above. My user name on YouTube is "sreetips".

Some folks have messaged me saying it was very helpful.

If you have questions then please feel free to private message me and I will help you if I can.

kadriver

 

[goldsilverpro]

Excellent video, kadriver!

Two comments.

When shotting the gold, the stainless container must be deep enough so that the metal being shotted is not still molten when it hits the bottom. Otherwise, it will weld to and alloy with the stainless. About the only way to get the stuck gold is to cut the stainless around the gold blob, leach out the silver, etc., with nitric, and then dissolve the gold and stainless with AR. Don't ask me how I know this.

The gold aqua regia solution seemed to be a bit cloudy after filtering. You probably could have re-filtered the solution through the same filter to clear it up. However, since you didn't chill the solution or dilute it 3/1 with water before filtering, some of the silver chloride will still be in there and will precipitate when the solution is cooled and/or diluted.

 

[Palladium]

I always place a pyroceram dish in the bottom of my vessel before i pour shot and it seems to work great. Chris is absolutely right about the silver chloride. The first time you run it through your vacuum filter it will cause silver chloride to form from the pressure drop of the filtering alone. I run it through the packed filter a second time and it comes out clear as Tenn whiskey. I always filter at least twice. Everyone pays so much attention with the details to acids, precipitants, and other procedures that they fail to realize the importance of this step alone.

 

[Bjl84]

gold fever is not a killer, its just the things that it causes some people to do that can be a killer, put the gold bearing material away and do some homework first, no amount of gold is worth your health and or life

 

[kadriver]

Excellent video, kadriver!

Two comments.

When shotting the gold, the stainless container must be deep enough so that the metal being shotted is not still molten when it hits the bottom. Otherwise, it will weld to and alloy with the stainless. About the only way to get the stuck gold is to cut the stainless around the gold blob, leach out the silver, etc., with nitric, and then dissolve the gold and stainless with AR. Don't ask me how I know this.

The gold aqua regia solution seemed to be a bit cloudy after filtering. You probably could have re-filtered the solution through the same filter to clear it up. However, since you didn't chill the solution or dilute it 3/1 with water before filtering, some of the silver chloride will still be in there and will precipitate when the solution is cooled and/or diluted.

There are a couple of things I do differently, I use a large stainless soup pot and put a big chuck of ice floating in the water. I make the ice in a cottage cheese container so it is big and round. I then pour the molten inquarted gold right down the side of the chunk of ice and is spreads out into nice small pieces of inquarted gold into the cold water. The acid can part these pieces nicely.

Also, I always filter until the chloroauric acid is crystal clean by pouring back through the same filter paper repeatedly before precipitating. This can go on for quite some time as the filter loads up and flow slows way down, vacuum assist is essential.

Further, I add the SMB directly to the chloroauric acid without first dissolving in water. For high purity though, dissolving the SMB in water and filtering the trash out is preferred.

Most importantly, I do not use concentrated nitric for the second parting of the inquarted gold. There is a danger of the acid spattering if it boils which causes hot acid and gold to spatter all over the place. I always use 50/50 nitric/distilled water for each treatment and I usually do four instead of just two.

kadriver