Dear teacher, Happy New Year. Usually, to determine the gold in a new stone that came from the mine, I first heat its surface at a temperature of 1200 degrees Celsius so that its surface melts a little. If there is gold in it, I can see it on the surface of the stone with a magnifying glass. Thanks
after crushing the sulphides you should roast them for 1 hour cause the sulphur in the sulphides affects the nitric acid in your aquaregia if no roasting was done
grh channel has a good examples as for most videos i've seen most will roast then boil the sulphides in sulphuric acid for 30 minutes to rid of any contaniments then give a good rinse with water at least 3 times then use nitric acid boil for 30 minutes to separate the metals and give a good rinse with water then use aquaregia to try to get the precious metals
Did you try to dissolve sulfides then burn it with torch and redissolve it sulfides will give you wrong testing it covers gold molecules from reacting with stannous chloride
Evaporate liquid put solids in stainless cup and burn it to yellow its fast with little amounts and redissolve it back and check then sometimes good results spatially with silver
Dear teacher, Happy New Year. Usually, to determine the gold in a new stone that came from the mine, I first heat its surface at a temperature of 1200 degrees Celsius so that its surface melts a little. If there is gold in it, I can see it on the surface of the stone with a magnifying glass. Thanks
I agree very rare you can get any gold in them sulfides thanks for the video
could you give me a list of the chemicals you use for your gold extraction process? Thank you, Larry from Michigan
Hidrchloric acide + potassium nitrate = aqua regia for dissolving . For participating I use sodium metabisulfite . Urea to kill the nitric .
Good advice, thank you sir....
after crushing the sulphides you should roast them for 1 hour cause the sulphur in the sulphides affects the nitric acid in your aquaregia if no roasting was done
grh channel has a good examples as for most videos i've seen most will roast then boil the sulphides in sulphuric acid for 30 minutes to rid of any contaniments then give a good rinse with water at least 3 times then use nitric acid boil for 30 minutes to separate the metals and give a good rinse with water then use aquaregia to try to get the precious metals
Sulfides sulfides wee don’t need those sulfides wee need the gold and a lot of gold 🤪😜😂
How to identify the sulfide ore between gold ore?
Sulfides breaks to dust gol just bends.
Good information
Sulfar don't react with gold but only with the merqury.u have saved our time and money thanks.jaibhim
Was there gold in the sand from the river?
I cleaned with hcl and then used mercury to recover that gold. To much work to little gold goin back to rocks
The problem is you put lot of nitric acid in aquarejia
There no gold .
Tank you
Did you try to dissolve sulfides then burn it with torch and redissolve it sulfides will give you wrong testing it covers gold molecules from reacting with stannous chloride
No
Evaporate liquid put solids in stainless cup and burn it to yellow its fast with little amounts and redissolve it back and check then sometimes good results spatially with silver
hello, well done, add captions if you have the opportunity
Nice one, thanks
You have to roast the sulfide ores first brother its locked up in the sulfer
super..!!
Hard way to make a living!
This is my hobby .
🇧🇷🇧🇷🇧🇷👍