How to extract pure silver from sundry Silver
Remove iron: will displace the silver on the wok fried, the best fried silver to brown, reddish, and lumpy or granular. After cooling, with a magnet (magnet) to absorb with iron.
The reduction of silver: equal without rust and the silver chloride tightly alternately placed in the container and Diego. By adding 1% volume concentration of 16% hydrochloric acid, 8 - 12 hours after all. Silver is replaced, brown. Then rinse 3 to 4 times to no acid.
The precipitation of silver chloride solution: according to the volume of silver nitrate, and then added according to the volume ratio of about l% concentration of 16% hydrochloric acid, the production of white silver chloride precipitate. For clarification, pumping liquid holding, will precipitate wash with water 2 to 3 times, to reach the neutral.
In a dilute nitric acid solution of 10% concentration, silver reacts with nitric acid to produce silver nitrate.300 kg. This dilute nitric acid solution can treat 4000 kilograms of silver glass and become silver nitrate solution
