Step by Step Procedure to Refine Gold from a mixture of metals. Learn how to Refine Gold when there is a high amount of Alloy. In this video, I am going to show you the full process of gold refining. It takes 2 hours to complete the whole process for gold refining then later to extract silver used during the refining process takes another 12 hours to get back into metal form. Follow the video to get the same results and do check the purity of gold in the gold testing machine. Procedure to Refine Gold 1. Melt pure silver twice or more than twice the weight of the alloy 2. Make the alloy as thin as possible in the press rolling machine [ If the thickness is less then it would take less time to eliminate all other metal except gold ] 3. Fold the alloy and put it into a volumetric flask or any flask 4. Use Nitric Axid to start the reaction between alloy and the acid 5. Supply uniform and low external heat at the bottom of the flask 6. When the reaction starts it produces red smoke so wait till it produces white smoke 7. White smoke represents the end of the chemical reaction inside the flask 8. Pour all the byproducts created in the flask into a half-filled water bucket because it contains all the silver 9. Rinse the flask several times with water 10. Just to be sure add nitric acid once again and left it on the flame for few minutes 11. After the reaction is completed rinse the gold several times to eliminate acid 12. Collect all the gold in a thin paper then melt it 13. Use Borax it will help in melting 14. 24K Gold has been Recovered