Traditional Culture Encyclopedia - Traditional customs - Alchemy process
Alchemy process
Refining gold
Step 4: zinc oxide wire: after absorbing the golden water, pour out the water in the beaker, pour in the oxidant, use the oxidant zinc oxide wire, and pay attention to stirring when oxidizing. After oxidation, pour it into a basin for purification. Step 5: purification: pour the oxidized gold powder into a beaker, repeat the operation, and pour off the excess water, and the remaining cotton-wool substance is sponge gold. Rinse the sponge gold with water, rinse off the medicine on the sponge gold, and rinse it several times to form gold mud. Step 6: Purification: Pour the gold mud into a beaker, add nitric acid to eliminate impurities, and heat it for purification, which can be heated in a battery furnace at home. Heating to boiling, cooling, and washing with hot water after cooling.
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