Dear Sir,
Firstly I would like to thanks to the Forum Admistrator and to all forum members.
I am mohd from malaysia and i am totally new here.I need some asistance
on refining my gold sand just recovered from river.
First step i have done quite well to smelt the gold sand with using boric acid and sodium carbonite.
After i have a few gold button weight 45.55 g, i have cheked and the contant of the gold is 89.5% gold.
later on i have bring the gold to a jewls shop to sell the gold but the price which i got is usd 46.15 /g on 26/7/2012 which is less than expated.
My question is how to refine my gold (89.5%) to (99.9%).
All chemical is ready bought by me and it is :-
A.Nitric Acid 70%(2.5l)
B.HCL acid 37%(2.5l)
C.Sulfuric Acid
D.sodium bicloride
E.Stannous Cloride
F. all equipment nassery
I have follow the Youtube on refining gold but TOTAL FAIL.When i add up nitric acid 50ml to my gold button and put on hot bricks it did not react and nothing happen.After that I took off my gold ring and do the same as first experiment ALSO FAIL.WHY the acid has no reaction.
Please help me what is going wrong with my experiment.
MILLIONS THANKS TO ALL OF THE FORUM MEMBERS.
Firstly I would like to thanks to the Forum Admistrator and to all forum members.
I am mohd from malaysia and i am totally new here.I need some asistance
on refining my gold sand just recovered from river.
First step i have done quite well to smelt the gold sand with using boric acid and sodium carbonite.
After i have a few gold button weight 45.55 g, i have cheked and the contant of the gold is 89.5% gold.
later on i have bring the gold to a jewls shop to sell the gold but the price which i got is usd 46.15 /g on 26/7/2012 which is less than expated.
My question is how to refine my gold (89.5%) to (99.9%).
All chemical is ready bought by me and it is :-
A.Nitric Acid 70%(2.5l)
B.HCL acid 37%(2.5l)
C.Sulfuric Acid
D.sodium bicloride
E.Stannous Cloride
F. all equipment nassery
I have follow the Youtube on refining gold but TOTAL FAIL.When i add up nitric acid 50ml to my gold button and put on hot bricks it did not react and nothing happen.After that I took off my gold ring and do the same as first experiment ALSO FAIL.WHY the acid has no reaction.
Please help me what is going wrong with my experiment.
MILLIONS THANKS TO ALL OF THE FORUM MEMBERS.