Without a doubt your best and most important video!!!! Classification is the most important part of gravity separation. The only thing you did not touch on was the basic chart that shows the % of gold size as a whole. Like 95% of all gold in the world is smaller then 100 mesh. And most people are only looking that 5%. Whereas I am looking for that 95%
If you're able to process each particle size separately 30,50,100 mesh you should have a very good recovery rate since gold is always the heaviest (except platinum,plutonium,tungsten and uranium) but it is very time consuming and uneconomical when dealing with large quantities. Like you said, once you know the size and shape of the gold particles, you can narrow down the classification required. Most hard rock gold I come across is 50 mesh minus. Placer gold is more unpredictable in size and therefore requires larger classifications. It is easier to recover though since the gold is liberated already unless you're close to the source.
Thank you Sir for the education its much appreciate and is /will be helping to make successful prospectors/miners out of those with the heart for it. Now back to learning about extraction tech.
What a fantastic lesson. Now I know what I have to do to get better performance from my Wave Table so Im not consistently re treating my tailings. My gold ranges from about 10 to 20 micron up to about 500. Most of it seems to be around the 50 to 100 micron mark. Ive only crushed it to get 100% through 25 mesh screen (710 microns or less). That clearly is not small enough relative to what this lesson teaches. Any suggestions at what size screen I should use??? HOWEVER the 40X pen microscope with the reticle in it that allows you to measure your gold. I know we are 4 years down the track from when this lesson was made but what is that exactly? Where did you get it? what's it called? if they are still on eBay (or somewhere) Im ordering one today. Cheers Peter
www.magnifier.com/40x-measuring-pocket-microscope-pen-reticle.htm There is no rule. You just have to screen to different sizes, extract the gold, and see where the residual gold in the rock drops substantially.
Without a doubt your best and most important video!!!!
Classification is the most important part of gravity separation.
The only thing you did not touch on was the basic chart that shows the % of gold size as a whole. Like 95% of all gold in the world is smaller then 100 mesh. And most people are only looking that 5%. Whereas I am looking for that 95%
True Dave
Thanks for the good information Keith, I really enjoy your videos! You really explain with great detail. Ron
Thank you
This is a great topic and well presented. Great video!
If you're able to process each particle size separately 30,50,100 mesh you should have a very good recovery rate since gold is always the heaviest (except platinum,plutonium,tungsten and uranium) but it is very time consuming and uneconomical when dealing with large quantities. Like you said, once you know the size and shape of the gold particles, you can narrow down the classification required. Most hard rock gold I come across is 50 mesh minus. Placer gold is more unpredictable in size and therefore requires larger classifications. It is easier to recover though since the gold is liberated already unless you're close to the source.
Well put. I agree completely
Thank you Sir for the education its much appreciate and is /will be helping to make successful prospectors/miners out of those with the heart for it.
Now back to learning about extraction tech.
You are most welcome.
What a fantastic lesson. Now I know what I have to do to get better performance from my Wave Table so Im not consistently re treating my tailings. My gold ranges from about 10 to 20 micron up to about 500. Most of it seems to be around the 50 to 100 micron mark. Ive only crushed it to get 100% through 25 mesh screen (710 microns or less). That clearly is not small enough relative to what this lesson teaches. Any suggestions at what size screen I should use???
HOWEVER the 40X pen microscope with the reticle in it that allows you to measure your gold. I know we are 4 years down the track from when this lesson was made but what is that exactly? Where did you get it? what's it called? if they are still on eBay (or somewhere) Im ordering one today.
Cheers
Peter
www.magnifier.com/40x-measuring-pocket-microscope-pen-reticle.htm
There is no rule. You just have to screen to different sizes, extract the gold, and see where the residual gold in the rock drops substantially.
Sir, this video is helpful.
Please also teach us how to separate feldspar and quartz🙏
Do you mean 'separate' as in divide the quartz to one place and feldspar to another or 'separate' as in how to identify one from the other?
YeeeeeeeeeHaaaaaaaaaa